---
_id: '14417'
abstract:
- lang: eng
text: Entropic risk (ERisk) is an established risk measure in finance, quantifying
risk by an exponential re-weighting of rewards. We study ERisk for the first time
in the context of turn-based stochastic games with the total reward objective.
This gives rise to an objective function that demands the control of systems in
a risk-averse manner. We show that the resulting games are determined and, in
particular, admit optimal memoryless deterministic strategies. This contrasts
risk measures that previously have been considered in the special case of Markov
decision processes and that require randomization and/or memory. We provide several
results on the decidability and the computational complexity of the threshold
problem, i.e. whether the optimal value of ERisk exceeds a given threshold. In
the most general case, the problem is decidable subject to Shanuel’s conjecture.
If all inputs are rational, the resulting threshold problem can be solved using
algebraic numbers, leading to decidability via a polynomial-time reduction to
the existential theory of the reals. Further restrictions on the encoding of the
input allow the solution of the threshold problem in NP∩coNP. Finally, an approximation
algorithm for the optimal value of ERisk is provided.
acknowledgement: "This work was partly funded by the ERC CoG 863818 (ForM-SMArt),
the DFG Grant\r\n389792660 as part of TRR 248 (Foundations of Perspicuous Software
Systems), the Cluster of\r\nExcellence EXC 2050/1 (CeTI, project ID 390696704, as
part of Germany’s Excellence Strategy), and the DFG projects BA-1679/11-1 and BA-1679/12-1."
alternative_title:
- LIPIcs
article_number: '15'
article_processing_charge: Yes
author:
- first_name: Christel
full_name: Baier, Christel
last_name: Baier
- first_name: Krishnendu
full_name: Chatterjee, Krishnendu
id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
last_name: Chatterjee
orcid: 0000-0002-4561-241X
- first_name: Tobias
full_name: Meggendorfer, Tobias
id: b21b0c15-30a2-11eb-80dc-f13ca25802e1
last_name: Meggendorfer
orcid: 0000-0002-1712-2165
- first_name: Jakob
full_name: Piribauer, Jakob
last_name: Piribauer
citation:
ama: 'Baier C, Chatterjee K, Meggendorfer T, Piribauer J. Entropic risk for turn-based
stochastic games. In: 48th International Symposium on Mathematical Foundations
of Computer Science. Vol 272. Schloss Dagstuhl - Leibniz-Zentrum für Informatik;
2023. doi:10.4230/LIPIcs.MFCS.2023.15'
apa: 'Baier, C., Chatterjee, K., Meggendorfer, T., & Piribauer, J. (2023). Entropic
risk for turn-based stochastic games. In 48th International Symposium on Mathematical
Foundations of Computer Science (Vol. 272). Bordeaux, France: Schloss Dagstuhl
- Leibniz-Zentrum für Informatik. https://doi.org/10.4230/LIPIcs.MFCS.2023.15'
chicago: Baier, Christel, Krishnendu Chatterjee, Tobias Meggendorfer, and Jakob
Piribauer. “Entropic Risk for Turn-Based Stochastic Games.” In 48th International
Symposium on Mathematical Foundations of Computer Science, Vol. 272. Schloss
Dagstuhl - Leibniz-Zentrum für Informatik, 2023. https://doi.org/10.4230/LIPIcs.MFCS.2023.15.
ieee: C. Baier, K. Chatterjee, T. Meggendorfer, and J. Piribauer, “Entropic risk
for turn-based stochastic games,” in 48th International Symposium on Mathematical
Foundations of Computer Science, Bordeaux, France, 2023, vol. 272.
ista: 'Baier C, Chatterjee K, Meggendorfer T, Piribauer J. 2023. Entropic risk for
turn-based stochastic games. 48th International Symposium on Mathematical Foundations
of Computer Science. MFCS: Symposium on Mathematical Foundations of Computer Science,
LIPIcs, vol. 272, 15.'
mla: Baier, Christel, et al. “Entropic Risk for Turn-Based Stochastic Games.” 48th
International Symposium on Mathematical Foundations of Computer Science, vol.
272, 15, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2023, doi:10.4230/LIPIcs.MFCS.2023.15.
short: C. Baier, K. Chatterjee, T. Meggendorfer, J. Piribauer, in:, 48th International
Symposium on Mathematical Foundations of Computer Science, Schloss Dagstuhl -
Leibniz-Zentrum für Informatik, 2023.
conference:
end_date: 2023-09-01
location: Bordeaux, France
name: 'MFCS: Symposium on Mathematical Foundations of Computer Science'
start_date: 2023-08-28
date_created: 2023-10-09T09:21:05Z
date_published: 2023-08-21T00:00:00Z
date_updated: 2023-10-09T09:22:37Z
day: '21'
ddc:
- '000'
department:
- _id: KrCh
doi: 10.4230/LIPIcs.MFCS.2023.15
ec_funded: 1
external_id:
arxiv:
- '2307.06611'
file:
- access_level: open_access
checksum: 402281b17ed669bbf149d0fdf68ac201
content_type: application/pdf
creator: dernst
date_created: 2023-10-09T09:19:11Z
date_updated: 2023-10-09T09:19:11Z
file_id: '14418'
file_name: 2023_LIPIcsMFCS_Baier.pdf
file_size: 826843
relation: main_file
success: 1
file_date_updated: 2023-10-09T09:19:11Z
has_accepted_license: '1'
intvolume: ' 272'
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
project:
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
call_identifier: H2020
grant_number: '863818'
name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
publication: 48th International Symposium on Mathematical Foundations of Computer
Science
publication_identifier:
eissn:
- 1868-8969
isbn:
- '9783959772921'
publication_status: published
publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik
quality_controlled: '1'
scopus_import: '1'
status: public
title: Entropic risk for turn-based stochastic games
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 272
year: '2023'
...
---
_id: '12960'
abstract:
- lang: eng
text: "Isomanifolds are the generalization of isosurfaces to arbitrary dimension
and codimension, i.e., submanifolds of Rd defined as the zero set of some multivariate
multivalued smooth function f:Rd→Rd−n, where n is the intrinsic dimension of the
manifold. A natural way to approximate a smooth isomanifold M=f−1(0) is to consider
its piecewise linear (PL) approximation M^\r\n based on a triangulation T of the
ambient space Rd. In this paper, we describe a simple algorithm to trace isomanifolds
from a given starting point. The algorithm works for arbitrary dimensions n and
d, and any precision D. Our main result is that, when f (or M) has bounded complexity,
the complexity of the algorithm is polynomial in d and δ=1/D (and unavoidably
exponential in n). Since it is known that for δ=Ω(d2.5), M^ is O(D2)-close and
isotopic to M\r\n, our algorithm produces a faithful PL-approximation of isomanifolds
of bounded complexity in time polynomial in d. Combining this algorithm with dimensionality
reduction techniques, the dependency on d in the size of M^ can be completely
removed with high probability. We also show that the algorithm can handle isomanifolds
with boundary and, more generally, isostratifolds. The algorithm for isomanifolds
with boundary has been implemented and experimental results are reported, showing
that it is practical and can handle cases that are far ahead of the state-of-the-art. "
acknowledgement: The authors have received funding from the European Research Council
under the European Union's ERC grant greement 339025 GUDHI (Algorithmic Foundations
of Geometric Un-derstanding in Higher Dimensions). The first author was supported by the French government,through
the 3IA C\^ote d'Azur Investments in the Future project managed by the National
ResearchAgency (ANR) with the reference ANR-19-P3IA-0002. The third author was
supported by the Eu-ropean Union's Horizon 2020 research and innovation programme
under the Marie Sk\lodowska-Curiegrant agreement 754411 and the FWF (Austrian Science
Fund) grant M 3073.
article_processing_charge: No
article_type: original
author:
- first_name: Jean Daniel
full_name: Boissonnat, Jean Daniel
last_name: Boissonnat
- first_name: Siargey
full_name: Kachanovich, Siargey
last_name: Kachanovich
- first_name: Mathijs
full_name: Wintraecken, Mathijs
id: 307CFBC8-F248-11E8-B48F-1D18A9856A87
last_name: Wintraecken
orcid: 0000-0002-7472-2220
citation:
ama: Boissonnat JD, Kachanovich S, Wintraecken M. Tracing isomanifolds in Rd in
time polynomial in d using Coxeter–Freudenthal–Kuhn triangulations. SIAM Journal
on Computing. 2023;52(2):452-486. doi:10.1137/21M1412918
apa: Boissonnat, J. D., Kachanovich, S., & Wintraecken, M. (2023). Tracing isomanifolds
in Rd in time polynomial in d using Coxeter–Freudenthal–Kuhn triangulations. SIAM
Journal on Computing. Society for Industrial and Applied Mathematics. https://doi.org/10.1137/21M1412918
chicago: Boissonnat, Jean Daniel, Siargey Kachanovich, and Mathijs Wintraecken.
“Tracing Isomanifolds in Rd in Time Polynomial in d Using Coxeter–Freudenthal–Kuhn
Triangulations.” SIAM Journal on Computing. Society for Industrial and
Applied Mathematics, 2023. https://doi.org/10.1137/21M1412918.
ieee: J. D. Boissonnat, S. Kachanovich, and M. Wintraecken, “Tracing isomanifolds
in Rd in time polynomial in d using Coxeter–Freudenthal–Kuhn triangulations,”
SIAM Journal on Computing, vol. 52, no. 2. Society for Industrial and Applied
Mathematics, pp. 452–486, 2023.
ista: Boissonnat JD, Kachanovich S, Wintraecken M. 2023. Tracing isomanifolds in
Rd in time polynomial in d using Coxeter–Freudenthal–Kuhn triangulations. SIAM
Journal on Computing. 52(2), 452–486.
mla: Boissonnat, Jean Daniel, et al. “Tracing Isomanifolds in Rd in Time Polynomial
in d Using Coxeter–Freudenthal–Kuhn Triangulations.” SIAM Journal on Computing,
vol. 52, no. 2, Society for Industrial and Applied Mathematics, 2023, pp. 452–86,
doi:10.1137/21M1412918.
short: J.D. Boissonnat, S. Kachanovich, M. Wintraecken, SIAM Journal on Computing
52 (2023) 452–486.
date_created: 2023-05-14T22:01:00Z
date_published: 2023-04-30T00:00:00Z
date_updated: 2023-10-10T07:34:35Z
day: '30'
department:
- _id: HeEd
doi: 10.1137/21M1412918
ec_funded: 1
external_id:
isi:
- '001013183000012'
intvolume: ' 52'
isi: 1
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://hal-emse.ccsd.cnrs.fr/3IA-COTEDAZUR/hal-04083489v1
month: '04'
oa: 1
oa_version: Submitted Version
page: 452-486
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
- _id: fc390959-9c52-11eb-aca3-afa58bd282b2
grant_number: M03073
name: Learning and triangulating manifolds via collapses
publication: SIAM Journal on Computing
publication_identifier:
eissn:
- 1095-7111
issn:
- 0097-5397
publication_status: published
publisher: Society for Industrial and Applied Mathematics
quality_controlled: '1'
related_material:
record:
- id: '9441'
relation: earlier_version
status: public
scopus_import: '1'
status: public
title: Tracing isomanifolds in Rd in time polynomial in d using Coxeter–Freudenthal–Kuhn
triangulations
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 52
year: '2023'
...
---
_id: '13134'
abstract:
- lang: eng
text: We propose a characterization of discrete analytical spheres, planes and lines
in the body-centered cubic (BCC) grid, both in the Cartesian and in the recently
proposed alternative compact coordinate system, in which each integer triplet
addresses some voxel in the grid. We define spheres and planes through double
Diophantine inequalities and investigate their relevant topological features,
such as functionality or the interrelation between the thickness of the objects
and their connectivity and separation properties. We define lines as the intersection
of planes. The number of the planes (up to six) is equal to the number of the
pairs of faces of a BCC voxel that are parallel to the line.
acknowledgement: The first author has been partially supported by the Ministry of
Science, Technological Development and Innovation of the Republic of Serbia through
the project no. 451-03-47/2023-01/200156. The fourth author is funded by the DFG
Collaborative Research Center TRR 109, ‘Discretization in Geometry and Dynamics’,
Austrian Science Fund (FWF), grant no. I 02979-N35.
article_number: '109693'
article_processing_charge: No
article_type: original
author:
- first_name: Lidija
full_name: Čomić, Lidija
last_name: Čomić
- first_name: Gaëlle
full_name: Largeteau-Skapin, Gaëlle
last_name: Largeteau-Skapin
- first_name: Rita
full_name: Zrour, Rita
last_name: Zrour
- first_name: Ranita
full_name: Biswas, Ranita
id: 3C2B033E-F248-11E8-B48F-1D18A9856A87
last_name: Biswas
orcid: 0000-0002-5372-7890
- first_name: Eric
full_name: Andres, Eric
last_name: Andres
citation:
ama: Čomić L, Largeteau-Skapin G, Zrour R, Biswas R, Andres E. Discrete analytical
objects in the body-centered cubic grid. Pattern Recognition. 2023;142(10).
doi:10.1016/j.patcog.2023.109693
apa: Čomić, L., Largeteau-Skapin, G., Zrour, R., Biswas, R., & Andres, E. (2023).
Discrete analytical objects in the body-centered cubic grid. Pattern Recognition.
Elsevier. https://doi.org/10.1016/j.patcog.2023.109693
chicago: Čomić, Lidija, Gaëlle Largeteau-Skapin, Rita Zrour, Ranita Biswas, and
Eric Andres. “Discrete Analytical Objects in the Body-Centered Cubic Grid.” Pattern
Recognition. Elsevier, 2023. https://doi.org/10.1016/j.patcog.2023.109693.
ieee: L. Čomić, G. Largeteau-Skapin, R. Zrour, R. Biswas, and E. Andres, “Discrete
analytical objects in the body-centered cubic grid,” Pattern Recognition,
vol. 142, no. 10. Elsevier, 2023.
ista: Čomić L, Largeteau-Skapin G, Zrour R, Biswas R, Andres E. 2023. Discrete analytical
objects in the body-centered cubic grid. Pattern Recognition. 142(10), 109693.
mla: Čomić, Lidija, et al. “Discrete Analytical Objects in the Body-Centered Cubic
Grid.” Pattern Recognition, vol. 142, no. 10, 109693, Elsevier, 2023, doi:10.1016/j.patcog.2023.109693.
short: L. Čomić, G. Largeteau-Skapin, R. Zrour, R. Biswas, E. Andres, Pattern Recognition
142 (2023).
date_created: 2023-06-18T22:00:45Z
date_published: 2023-10-01T00:00:00Z
date_updated: 2023-10-10T07:37:16Z
day: '01'
department:
- _id: HeEd
doi: 10.1016/j.patcog.2023.109693
external_id:
isi:
- '001013526000001'
intvolume: ' 142'
isi: 1
issue: '10'
language:
- iso: eng
month: '10'
oa_version: None
project:
- _id: 2561EBF4-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: I02979-N35
name: Persistence and stability of geometric complexes
- _id: 0aa4bc98-070f-11eb-9043-e6fff9c6a316
grant_number: I4887
name: Discretization in Geometry and Dynamics
publication: Pattern Recognition
publication_identifier:
issn:
- 0031-3203
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: Discrete analytical objects in the body-centered cubic grid
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 142
year: '2023'
...
---
_id: '13216'
abstract:
- lang: eng
text: Physical catalysts often have multiple sites where reactions can take place.
One prominent example is single-atom alloys, where the reactive dopant atoms can
preferentially locate in the bulk or at different sites on the surface of the
nanoparticle. However, ab initio modeling of catalysts usually only considers
one site of the catalyst, neglecting the effects of multiple sites. Here, nanoparticles
of copper doped with single-atom rhodium or palladium are modeled for the dehydrogenation
of propane. Single-atom alloy nanoparticles are simulated at 400–600 K, using
machine learning potentials trained on density functional theory calculations,
and then the occupation of different single-atom active sites is identified using
a similarity kernel. Further, the turnover frequency for all possible sites is
calculated for propane dehydrogenation to propene through microkinetic modeling
using density functional theory calculations. The total turnover frequencies of
the whole nanoparticle are then described from both the population and the individual
turnover frequency of each site. Under operating conditions, rhodium as a dopant
is found to almost exclusively occupy (111) surface sites while palladium as a
dopant occupies a greater variety of facets. Undercoordinated dopant surface sites
are found to tend to be more reactive for propane dehydrogenation compared to
the (111) surface. It is found that considering the dynamics of the single-atom
alloy nanoparticle has a profound effect on the calculated catalytic activity
of single-atom alloys by several orders of magnitude.
acknowledgement: "B.C. acknowledges resources provided by the Cambridge Tier2 system
operated by the University of Cambridge Research\r\nComputing Service funded by
EPSRC Tier-2 capital grant EP/\r\nP020259/1."
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Rhys
full_name: Bunting, Rhys
id: 91deeae8-1207-11ec-b130-c194ad5b50c6
last_name: Bunting
orcid: 0000-0001-6928-074X
- first_name: Felix
full_name: Wodaczek, Felix
id: 8b4b6a9f-32b0-11ee-9fa8-bbe85e26258e
last_name: Wodaczek
orcid: 0009-0000-1457-795X
- first_name: Tina
full_name: Torabi, Tina
last_name: Torabi
- first_name: Bingqing
full_name: Cheng, Bingqing
id: cbe3cda4-d82c-11eb-8dc7-8ff94289fcc9
last_name: Cheng
orcid: 0000-0002-3584-9632
citation:
ama: 'Bunting R, Wodaczek F, Torabi T, Cheng B. Reactivity of single-atom alloy
nanoparticles: Modeling the dehydrogenation of propane. Journal of the American
Chemical Society. 2023;145(27):14894-14902. doi:10.1021/jacs.3c04030'
apa: 'Bunting, R., Wodaczek, F., Torabi, T., & Cheng, B. (2023). Reactivity
of single-atom alloy nanoparticles: Modeling the dehydrogenation of propane. Journal
of the American Chemical Society. American Chemical Society. https://doi.org/10.1021/jacs.3c04030'
chicago: 'Bunting, Rhys, Felix Wodaczek, Tina Torabi, and Bingqing Cheng. “Reactivity
of Single-Atom Alloy Nanoparticles: Modeling the Dehydrogenation of Propane.”
Journal of the American Chemical Society. American Chemical Society, 2023.
https://doi.org/10.1021/jacs.3c04030.'
ieee: 'R. Bunting, F. Wodaczek, T. Torabi, and B. Cheng, “Reactivity of single-atom
alloy nanoparticles: Modeling the dehydrogenation of propane,” Journal of the
American Chemical Society, vol. 145, no. 27. American Chemical Society, pp.
14894–14902, 2023.'
ista: 'Bunting R, Wodaczek F, Torabi T, Cheng B. 2023. Reactivity of single-atom
alloy nanoparticles: Modeling the dehydrogenation of propane. Journal of the American
Chemical Society. 145(27), 14894–14902.'
mla: 'Bunting, Rhys, et al. “Reactivity of Single-Atom Alloy Nanoparticles: Modeling
the Dehydrogenation of Propane.” Journal of the American Chemical Society,
vol. 145, no. 27, American Chemical Society, 2023, pp. 14894–902, doi:10.1021/jacs.3c04030.'
short: R. Bunting, F. Wodaczek, T. Torabi, B. Cheng, Journal of the American Chemical
Society 145 (2023) 14894–14902.
date_created: 2023-07-12T09:16:40Z
date_published: 2023-06-30T00:00:00Z
date_updated: 2023-10-11T08:45:10Z
day: '30'
ddc:
- '540'
department:
- _id: MaIb
- _id: BiCh
doi: 10.1021/jacs.3c04030
external_id:
isi:
- '001020623900001'
pmid:
- '37390457'
file:
- access_level: open_access
checksum: e07d5323f9c0e5cbd1ad6453f29440ab
content_type: application/pdf
creator: cchlebak
date_created: 2023-07-12T10:22:04Z
date_updated: 2023-07-12T10:22:04Z
file_id: '13219'
file_name: 2023_JACS_Bunting.pdf
file_size: 3155843
relation: main_file
success: 1
file_date_updated: 2023-07-12T10:22:04Z
has_accepted_license: '1'
intvolume: ' 145'
isi: 1
issue: '27'
keyword:
- Colloid and Surface Chemistry
- Biochemistry
- General Chemistry
- Catalysis
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
page: 14894-14902
pmid: 1
publication: Journal of the American Chemical Society
publication_identifier:
eissn:
- 1520-5126
issn:
- 0002-7863
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
status: public
title: 'Reactivity of single-atom alloy nanoparticles: Modeling the dehydrogenation
of propane'
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 145
year: '2023'
...
---
_id: '14426'
abstract:
- lang: eng
text: To meet the physiological demands of the body, organs need to establish a
functional tissue architecture and adequate size as the embryo develops to adulthood.
In the liver, uni- and bipotent progenitor differentiation into hepatocytes and
biliary epithelial cells (BECs), and their relative proportions, comprise the
functional architecture. Yet, the contribution of individual liver progenitors
at the organ level to both fates, and their specific proportion, is unresolved.
Combining mathematical modelling with organ-wide, multispectral FRaeppli-NLS lineage
tracing in zebrafish, we demonstrate that a precise BEC-to-hepatocyte ratio is
established (i) fast, (ii) solely by heterogeneous lineage decisions from uni-
and bipotent progenitors, and (iii) independent of subsequent cell type–specific
proliferation. Extending lineage tracing to adulthood determined that embryonic
cells undergo spatially heterogeneous three-dimensional growth associated with
distinct environments. Strikingly, giant clusters comprising almost half a ventral
lobe suggest lobe-specific dominant-like growth behaviours. We show substantial
hepatocyte polyploidy in juveniles representing another hallmark of postembryonic
liver growth. Our findings uncover heterogeneous progenitor contributions to tissue
architecture-defining cell type proportions and postembryonic organ growth as
key mechanisms forming the adult liver.
acknowledgement: "We thank the Ober group for discussion and comments on the manuscript.
We are grateful to\r\nDr. F. Lemaigre for feedback on the manuscript and Dr. T.
Piotrowski for invaluable support.\r\nWe thank the department of experimental medicine
(AEM) in Copenhagen for expert fish\r\ncare. We gratefully acknowledge the DanStem
Imaging Platform (University of Copenhagen)\r\nfor support and assistance in this
work.\r\nThis work is supported by Novo Nordisk Foundation grant NNF17CC0027852
(EAO);\r\nNordisk Foundation grant NNF19OC0058327 (EAO); Novo Nordisk Foundation
grant\r\nNNF17OC0031204 (PRL); https://novonordiskfonden.dk/en/; Danish National\r\nResearch
Foundation grant DNRF116 (EAO and AT); https://dg.dk/en/; John and Birthe Meyer\r\nFoundation
(PRL) and European Research Council (ERC) under the EU Horizon 2020 research and
Innovation Programme Grant Agreement No. 851288 (EH)."
article_number: e3002315
article_processing_charge: No
article_type: original
author:
- first_name: Iris A.
full_name: Unterweger, Iris A.
last_name: Unterweger
- first_name: Julie
full_name: Klepstad, Julie
last_name: Klepstad
- first_name: Edouard B
full_name: Hannezo, Edouard B
id: 3A9DB764-F248-11E8-B48F-1D18A9856A87
last_name: Hannezo
orcid: 0000-0001-6005-1561
- first_name: Pia R.
full_name: Lundegaard, Pia R.
last_name: Lundegaard
- first_name: Ala
full_name: Trusina, Ala
last_name: Trusina
- first_name: Elke A.
full_name: Ober, Elke A.
last_name: Ober
citation:
ama: Unterweger IA, Klepstad J, Hannezo EB, Lundegaard PR, Trusina A, Ober EA. Lineage
tracing identifies heterogeneous hepatoblast contribution to cell lineages and
postembryonic organ growth dynamics. PLoS Biology. 2023;21(10). doi:10.1371/journal.pbio.3002315
apa: Unterweger, I. A., Klepstad, J., Hannezo, E. B., Lundegaard, P. R., Trusina,
A., & Ober, E. A. (2023). Lineage tracing identifies heterogeneous hepatoblast
contribution to cell lineages and postembryonic organ growth dynamics. PLoS
Biology. Public Library of Science. https://doi.org/10.1371/journal.pbio.3002315
chicago: Unterweger, Iris A., Julie Klepstad, Edouard B Hannezo, Pia R. Lundegaard,
Ala Trusina, and Elke A. Ober. “Lineage Tracing Identifies Heterogeneous Hepatoblast
Contribution to Cell Lineages and Postembryonic Organ Growth Dynamics.” PLoS
Biology. Public Library of Science, 2023. https://doi.org/10.1371/journal.pbio.3002315.
ieee: I. A. Unterweger, J. Klepstad, E. B. Hannezo, P. R. Lundegaard, A. Trusina,
and E. A. Ober, “Lineage tracing identifies heterogeneous hepatoblast contribution
to cell lineages and postembryonic organ growth dynamics,” PLoS Biology,
vol. 21, no. 10. Public Library of Science, 2023.
ista: Unterweger IA, Klepstad J, Hannezo EB, Lundegaard PR, Trusina A, Ober EA.
2023. Lineage tracing identifies heterogeneous hepatoblast contribution to cell
lineages and postembryonic organ growth dynamics. PLoS Biology. 21(10), e3002315.
mla: Unterweger, Iris A., et al. “Lineage Tracing Identifies Heterogeneous Hepatoblast
Contribution to Cell Lineages and Postembryonic Organ Growth Dynamics.” PLoS
Biology, vol. 21, no. 10, e3002315, Public Library of Science, 2023, doi:10.1371/journal.pbio.3002315.
short: I.A. Unterweger, J. Klepstad, E.B. Hannezo, P.R. Lundegaard, A. Trusina,
E.A. Ober, PLoS Biology 21 (2023).
date_created: 2023-10-15T22:01:10Z
date_published: 2023-10-04T00:00:00Z
date_updated: 2023-10-16T07:25:48Z
day: '04'
ddc:
- '570'
department:
- _id: EdHa
doi: 10.1371/journal.pbio.3002315
ec_funded: 1
file:
- access_level: open_access
checksum: 40a2b11b41d70a0e5939f8a52b66e389
content_type: application/pdf
creator: dernst
date_created: 2023-10-16T07:20:49Z
date_updated: 2023-10-16T07:20:49Z
file_id: '14431'
file_name: 2023_PloSBiology_Unterweger.pdf
file_size: 6193110
relation: main_file
success: 1
file_date_updated: 2023-10-16T07:20:49Z
has_accepted_license: '1'
intvolume: ' 21'
issue: '10'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
project:
- _id: 05943252-7A3F-11EA-A408-12923DDC885E
call_identifier: H2020
grant_number: '851288'
name: Design Principles of Branching Morphogenesis
publication: PLoS Biology
publication_identifier:
eissn:
- 1545-7885
publication_status: published
publisher: Public Library of Science
quality_controlled: '1'
related_material:
link:
- relation: software
url: https://github.com/JulieKlepstad/LiverDevelopment
scopus_import: '1'
status: public
title: Lineage tracing identifies heterogeneous hepatoblast contribution to cell lineages
and postembryonic organ growth dynamics
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 21
year: '2023'
...
---
_id: '14428'
abstract:
- lang: eng
text: "Suppose we have two hash functions h1 and h2, but we trust the security of
only one of them. To mitigate this worry, we wish to build a hash combiner Ch1,h2
which is secure so long as one of the underlying hash functions is. This question
has been well-studied in the regime of collision resistance. In this case, concatenating
the two hash function outputs clearly works. Unfortunately, a long series of works
(Boneh and Boyen, CRYPTO’06; Pietrzak, Eurocrypt’07; Pietrzak, CRYPTO’08) showed
no (noticeably) shorter combiner for collision resistance is possible.\r\nIn this
work, we revisit this pessimistic state of affairs, motivated by the observation
that collision-resistance is insufficient for many interesting applications of
cryptographic hash functions anyway. We argue the right formulation of the “hash
combiner” is to build what we call random oracle (RO) combiners, utilizing stronger
assumptions for stronger constructions.\r\nIndeed, we circumvent the previous
lower bounds for collision resistance by constructing a simple length-preserving
RO combiner C˜h1,h2Z1,Z2(M)=h1(M,Z1)⊕h2(M,Z2),where Z1,Z2\r\n are random salts
of appropriate length. We show that this extra randomness is necessary for RO
combiners, and indeed our construction is somewhat tight with this lower bound.\r\nOn
the negative side, we show that one cannot generically apply the composition theorem
to further replace “monolithic” hash functions h1 and h2 by some simpler indifferentiable
construction (such as the Merkle-Damgård transformation) from smaller components,
such as fixed-length compression functions. Finally, despite this issue, we directly
prove collision resistance of the Merkle-Damgård variant of our combiner, where
h1 and h2 are replaced by iterative Merkle-Damgård hashes applied to a fixed-length
compression function. Thus, we can still subvert the concatenation barrier for
collision-resistance combiners while utilizing practically small fixed-length
components underneath."
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Yevgeniy
full_name: Dodis, Yevgeniy
last_name: Dodis
- first_name: Niels
full_name: Ferguson, Niels
last_name: Ferguson
- first_name: Eli
full_name: Goldin, Eli
last_name: Goldin
- first_name: Peter
full_name: Hall, Peter
last_name: Hall
- first_name: Krzysztof Z
full_name: Pietrzak, Krzysztof Z
id: 3E04A7AA-F248-11E8-B48F-1D18A9856A87
last_name: Pietrzak
orcid: 0000-0002-9139-1654
citation:
ama: 'Dodis Y, Ferguson N, Goldin E, Hall P, Pietrzak KZ. Random oracle combiners:
Breaking the concatenation barrier for collision-resistance. In: 43rd Annual
International Cryptology Conference. Vol 14082. Springer Nature; 2023:514-546.
doi:10.1007/978-3-031-38545-2_17'
apa: 'Dodis, Y., Ferguson, N., Goldin, E., Hall, P., & Pietrzak, K. Z. (2023).
Random oracle combiners: Breaking the concatenation barrier for collision-resistance.
In 43rd Annual International Cryptology Conference (Vol. 14082, pp. 514–546).
Santa Barbara, CA, United States: Springer Nature. https://doi.org/10.1007/978-3-031-38545-2_17'
chicago: 'Dodis, Yevgeniy, Niels Ferguson, Eli Goldin, Peter Hall, and Krzysztof
Z Pietrzak. “Random Oracle Combiners: Breaking the Concatenation Barrier for Collision-Resistance.”
In 43rd Annual International Cryptology Conference, 14082:514–46. Springer
Nature, 2023. https://doi.org/10.1007/978-3-031-38545-2_17.'
ieee: 'Y. Dodis, N. Ferguson, E. Goldin, P. Hall, and K. Z. Pietrzak, “Random oracle
combiners: Breaking the concatenation barrier for collision-resistance,” in 43rd
Annual International Cryptology Conference, Santa Barbara, CA, United States,
2023, vol. 14082, pp. 514–546.'
ista: 'Dodis Y, Ferguson N, Goldin E, Hall P, Pietrzak KZ. 2023. Random oracle combiners:
Breaking the concatenation barrier for collision-resistance. 43rd Annual International
Cryptology Conference. CRYPTO: Advances in Cryptology, LNCS, vol. 14082, 514–546.'
mla: 'Dodis, Yevgeniy, et al. “Random Oracle Combiners: Breaking the Concatenation
Barrier for Collision-Resistance.” 43rd Annual International Cryptology Conference,
vol. 14082, Springer Nature, 2023, pp. 514–46, doi:10.1007/978-3-031-38545-2_17.'
short: Y. Dodis, N. Ferguson, E. Goldin, P. Hall, K.Z. Pietrzak, in:, 43rd Annual
International Cryptology Conference, Springer Nature, 2023, pp. 514–546.
conference:
end_date: 2023-08-24
location: Santa Barbara, CA, United States
name: 'CRYPTO: Advances in Cryptology'
start_date: 2023-08-20
date_created: 2023-10-15T22:01:11Z
date_published: 2023-08-09T00:00:00Z
date_updated: 2023-10-16T08:02:11Z
day: '09'
department:
- _id: KrPi
doi: 10.1007/978-3-031-38545-2_17
intvolume: ' 14082'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://eprint.iacr.org/2023/1041
month: '08'
oa: 1
oa_version: Preprint
page: 514-546
publication: 43rd Annual International Cryptology Conference
publication_identifier:
eissn:
- 1611-3349
isbn:
- '9783031385445'
issn:
- 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Random oracle combiners: Breaking the concatenation barrier for collision-resistance'
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 14082
year: '2023'
...
---
_id: '13052'
abstract:
- lang: eng
text: Imaging of the immunological synapse (IS) between dendritic cells (DCs) and
T cells in suspension is hampered by suboptimal alignment of cell-cell contacts
along the vertical imaging plane. This requires optical sectioning that often
results in unsatisfactory resolution in time and space. Here, we present a workflow
where DCs and T cells are confined between a layer of glass and polydimethylsiloxane
(PDMS) that orients the cells along one, horizontal imaging plane, allowing for
fast en-face-imaging of the DC-T cell IS.
acknowledged_ssus:
- _id: Bio
- _id: NanoFab
- _id: M-Shop
acknowledgement: 'A.L. was funded by an Erwin Schrödinger postdoctoral fellowship
of the Austrian Science Fund (FWF, project number: J4542-B) and is an EMBO non-stipendiary
postdoctoral fellow. This work was supported by a European Research Council grant
ERC-CoG-72437 to M.S. We thank the Imaging & Optics facility, the Nanofabrication
facility, and the Miba Machine Shop of ISTA for their excellent support.'
alternative_title:
- Methods in Molecular Biology
article_processing_charge: No
author:
- first_name: Alexander F
full_name: Leithner, Alexander F
id: 3B1B77E4-F248-11E8-B48F-1D18A9856A87
last_name: Leithner
orcid: 0000-0002-1073-744X
- first_name: Jack
full_name: Merrin, Jack
id: 4515C308-F248-11E8-B48F-1D18A9856A87
last_name: Merrin
orcid: 0000-0001-5145-4609
- first_name: Michael K
full_name: Sixt, Michael K
id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87
last_name: Sixt
orcid: 0000-0002-6620-9179
citation:
ama: 'Leithner AF, Merrin J, Sixt MK. En-Face Imaging of T Cell-Dendritic Cell Immunological
Synapses. In: Baldari C, Dustin M, eds. The Immune Synapse. Vol 2654. MIMB.
New York, NY: Springer Nature; 2023:137-147. doi:10.1007/978-1-0716-3135-5_9'
apa: 'Leithner, A. F., Merrin, J., & Sixt, M. K. (2023). En-Face Imaging of
T Cell-Dendritic Cell Immunological Synapses. In C. Baldari & M. Dustin (Eds.),
The Immune Synapse (Vol. 2654, pp. 137–147). New York, NY: Springer Nature.
https://doi.org/10.1007/978-1-0716-3135-5_9'
chicago: 'Leithner, Alexander F, Jack Merrin, and Michael K Sixt. “En-Face Imaging
of T Cell-Dendritic Cell Immunological Synapses.” In The Immune Synapse,
edited by Cosima Baldari and Michael Dustin, 2654:137–47. MIMB. New York, NY:
Springer Nature, 2023. https://doi.org/10.1007/978-1-0716-3135-5_9.'
ieee: 'A. F. Leithner, J. Merrin, and M. K. Sixt, “En-Face Imaging of T Cell-Dendritic
Cell Immunological Synapses,” in The Immune Synapse, vol. 2654, C. Baldari
and M. Dustin, Eds. New York, NY: Springer Nature, 2023, pp. 137–147.'
ista: 'Leithner AF, Merrin J, Sixt MK. 2023.En-Face Imaging of T Cell-Dendritic
Cell Immunological Synapses. In: The Immune Synapse. Methods in Molecular Biology,
vol. 2654, 137–147.'
mla: Leithner, Alexander F., et al. “En-Face Imaging of T Cell-Dendritic Cell Immunological
Synapses.” The Immune Synapse, edited by Cosima Baldari and Michael Dustin,
vol. 2654, Springer Nature, 2023, pp. 137–47, doi:10.1007/978-1-0716-3135-5_9.
short: A.F. Leithner, J. Merrin, M.K. Sixt, in:, C. Baldari, M. Dustin (Eds.), The
Immune Synapse, Springer Nature, New York, NY, 2023, pp. 137–147.
date_created: 2023-05-22T08:41:48Z
date_published: 2023-04-28T00:00:00Z
date_updated: 2023-10-17T08:44:53Z
day: '28'
department:
- _id: MiSi
- _id: NanoFab
doi: 10.1007/978-1-0716-3135-5_9
ec_funded: 1
editor:
- first_name: Cosima
full_name: Baldari, Cosima
last_name: Baldari
- first_name: Michael
full_name: Dustin, Michael
last_name: Dustin
external_id:
pmid:
- '37106180'
intvolume: ' 2654'
language:
- iso: eng
month: '04'
oa_version: None
page: 137-147
place: New York, NY
pmid: 1
project:
- _id: 25FE9508-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '724373'
name: Cellular navigation along spatial gradients
publication: The Immune Synapse
publication_identifier:
eisbn:
- '9781071631355'
eissn:
- 1940-6029
isbn:
- '9781071631348'
issn:
- 1064-3745
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
series_title: MIMB
status: public
title: En-Face Imaging of T Cell-Dendritic Cell Immunological Synapses
type: book_chapter
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 2654
year: '2023'
...
---
_id: '12406'
abstract:
- lang: eng
text: Let X be a sufficiently large positive integer. We prove that one may choose
a subset S of primes with cardinality O(logX) such that a positive proportion
of integers less than X can be represented by x2+py2 for at least one p∈S.
acknowledgement: "This article is a version the author’s master thesis at the University
of Bonn. The author would like to thank his advisor Valentin Blomer for introducing
the problem, and giving generous feedback and encouragement along the way, especially
during the global pandemic.\r\nThe author thanks Edgar Assing for his lectures on
analytic number theory. Finally, the author is grateful to the anonymous referees
for their valuable time and comments.\r\n"
article_processing_charge: No
article_type: original
author:
- first_name: Yijie
full_name: Diao, Yijie
id: 7b7eb4ca-eb2c-11ec-b98b-accec0b20c3b
last_name: Diao
orcid: 0000-0002-4989-5330
citation:
ama: Diao Y. Density of the union of positive diagonal binary quadratic forms. Acta
Arithmetica. 2023;207:1-17. doi:10.4064/aa210830-24-11
apa: Diao, Y. (2023). Density of the union of positive diagonal binary quadratic
forms. Acta Arithmetica. Instytut Matematyczny. https://doi.org/10.4064/aa210830-24-11
chicago: Diao, Yijie. “Density of the Union of Positive Diagonal Binary Quadratic
Forms.” Acta Arithmetica. Instytut Matematyczny, 2023. https://doi.org/10.4064/aa210830-24-11.
ieee: Y. Diao, “Density of the union of positive diagonal binary quadratic forms,”
Acta Arithmetica, vol. 207. Instytut Matematyczny, pp. 1–17, 2023.
ista: Diao Y. 2023. Density of the union of positive diagonal binary quadratic forms.
Acta Arithmetica. 207, 1–17.
mla: Diao, Yijie. “Density of the Union of Positive Diagonal Binary Quadratic Forms.”
Acta Arithmetica, vol. 207, Instytut Matematyczny, 2023, pp. 1–17, doi:10.4064/aa210830-24-11.
short: Y. Diao, Acta Arithmetica 207 (2023) 1–17.
date_created: 2023-01-26T21:17:04Z
date_published: 2023-01-09T00:00:00Z
date_updated: 2023-10-17T09:15:17Z
day: '09'
department:
- _id: GradSch
doi: 10.4064/aa210830-24-11
external_id:
arxiv:
- '2103.08268'
isi:
- '000912903000001'
intvolume: ' 207'
isi: 1
keyword:
- Algebra
- Number Theory
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2103.08268
month: '01'
oa: 1
oa_version: Preprint
page: 1-17
publication: Acta Arithmetica
publication_identifier:
eissn:
- 1730-6264
issn:
- 0065-1036
publication_status: published
publisher: Instytut Matematyczny
quality_controlled: '1'
status: public
title: Density of the union of positive diagonal binary quadratic forms
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 207
year: '2023'
...
---
_id: '13200'
abstract:
- lang: eng
text: Recent quantum technologies have established precise quantum control of various
microscopic systems using electromagnetic waves. Interfaces based on cryogenic
cavity electro-optic systems are particularly promising, due to the direct interaction
between microwave and optical fields in the quantum regime. Quantum optical control
of superconducting microwave circuits has been precluded so far due to the weak
electro-optical coupling as well as quasi-particles induced by the pump laser.
Here we report the coherent control of a superconducting microwave cavity using
laser pulses in a multimode electro-optical device at millikelvin temperature
with near-unity cooperativity. Both the stationary and instantaneous responses
of the microwave and optical modes comply with the coherent electro-optical interaction,
and reveal only minuscule amount of excess back-action with an unanticipated time
delay. Our demonstration enables wide ranges of applications beyond quantum transductions,
from squeezing and quantum non-demolition measurements of microwave fields, to
entanglement generation and hybrid quantum networks.
acknowledgement: This work was supported by the European Research Council under grant
agreement no. 758053 (ERC StG QUNNECT), the European Union’s Horizon 2020 research
and innovation program under grant agreement no. 899354 (FETopen SuperQuLAN), and
the Austrian Science Fund (FWF) through BeyondC (F7105). L.Q. acknowledges generous
support from the ISTFELLOW programme. W.H. is the recipient of an ISTplus postdoctoral
fellowship with funding from the European Union’s Horizon 2020 research and innovation
program under the Marie Skłodowska-Curie grant agreement no. 754411. G.A. is the
recipient of a DOC fellowship of the Austrian Academy of Sciences at IST Austria.
article_number: '3784'
article_processing_charge: No
article_type: original
author:
- first_name: Liu
full_name: Qiu, Liu
id: 45e99c0d-1eb1-11eb-9b96-ed8ab2983cac
last_name: Qiu
orcid: 0000-0003-4345-4267
- first_name: Rishabh
full_name: Sahu, Rishabh
id: 47D26E34-F248-11E8-B48F-1D18A9856A87
last_name: Sahu
orcid: 0000-0001-6264-2162
- first_name: William J
full_name: Hease, William J
id: 29705398-F248-11E8-B48F-1D18A9856A87
last_name: Hease
orcid: 0000-0001-9868-2166
- first_name: Georg M
full_name: Arnold, Georg M
id: 3770C838-F248-11E8-B48F-1D18A9856A87
last_name: Arnold
orcid: 0000-0003-1397-7876
- first_name: Johannes M
full_name: Fink, Johannes M
id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
last_name: Fink
orcid: 0000-0001-8112-028X
citation:
ama: Qiu L, Sahu R, Hease WJ, Arnold GM, Fink JM. Coherent optical control of a
superconducting microwave cavity via electro-optical dynamical back-action. Nature
Communications. 2023;14. doi:10.1038/s41467-023-39493-3
apa: Qiu, L., Sahu, R., Hease, W. J., Arnold, G. M., & Fink, J. M. (2023). Coherent
optical control of a superconducting microwave cavity via electro-optical dynamical
back-action. Nature Communications. Nature Research. https://doi.org/10.1038/s41467-023-39493-3
chicago: Qiu, Liu, Rishabh Sahu, William J Hease, Georg M Arnold, and Johannes M
Fink. “Coherent Optical Control of a Superconducting Microwave Cavity via Electro-Optical
Dynamical Back-Action.” Nature Communications. Nature Research, 2023. https://doi.org/10.1038/s41467-023-39493-3.
ieee: L. Qiu, R. Sahu, W. J. Hease, G. M. Arnold, and J. M. Fink, “Coherent optical
control of a superconducting microwave cavity via electro-optical dynamical back-action,”
Nature Communications, vol. 14. Nature Research, 2023.
ista: Qiu L, Sahu R, Hease WJ, Arnold GM, Fink JM. 2023. Coherent optical control
of a superconducting microwave cavity via electro-optical dynamical back-action.
Nature Communications. 14, 3784.
mla: Qiu, Liu, et al. “Coherent Optical Control of a Superconducting Microwave Cavity
via Electro-Optical Dynamical Back-Action.” Nature Communications, vol.
14, 3784, Nature Research, 2023, doi:10.1038/s41467-023-39493-3.
short: L. Qiu, R. Sahu, W.J. Hease, G.M. Arnold, J.M. Fink, Nature Communications
14 (2023).
date_created: 2023-07-09T22:01:11Z
date_published: 2023-06-24T00:00:00Z
date_updated: 2023-10-17T11:46:12Z
day: '24'
ddc:
- '000'
department:
- _id: JoFi
doi: 10.1038/s41467-023-39493-3
ec_funded: 1
external_id:
arxiv:
- '2210.12443'
isi:
- '001018100800002'
pmid:
- '37355691'
file:
- access_level: open_access
checksum: ec7ccd2c08f90d59cab302fd0d7776a4
content_type: application/pdf
creator: alisjak
date_created: 2023-07-10T10:10:54Z
date_updated: 2023-07-10T10:10:54Z
file_id: '13206'
file_name: 2023_NatureComms_Qiu.pdf
file_size: 1349134
relation: main_file
success: 1
file_date_updated: 2023-07-10T10:10:54Z
has_accepted_license: '1'
intvolume: ' 14'
isi: 1
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 26336814-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '758053'
name: A Fiber Optic Transceiver for Superconducting Qubits
- _id: 9B868D20-BA93-11EA-9121-9846C619BF3A
call_identifier: H2020
grant_number: '899354'
name: Quantum Local Area Networks with Superconducting Qubits
- _id: bdb108fd-d553-11ed-ba76-83dc74a9864f
name: QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration
of Superconducting Quantum Circuits
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
- _id: 2671EB66-B435-11E9-9278-68D0E5697425
name: Coherent on-chip conversion of superconducting qubit signals from microwaves
to optical frequencies
publication: Nature Communications
publication_identifier:
eissn:
- 2041-1723
publication_status: published
publisher: Nature Research
quality_controlled: '1'
scopus_import: '1'
status: public
title: Coherent optical control of a superconducting microwave cavity via electro-optical
dynamical back-action
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 14
year: '2023'
...
---
_id: '13315'
abstract:
- lang: eng
text: How do statistical dependencies in measurement noise influence high-dimensional
inference? To answer this, we study the paradigmatic spiked matrix model of principal
components analysis (PCA), where a rank-one matrix is corrupted by additive noise.
We go beyond the usual independence assumption on the noise entries, by drawing
the noise from a low-order polynomial orthogonal matrix ensemble. The resulting
noise correlations make the setting relevant for applications but analytically
challenging. We provide characterization of the Bayes optimal limits of inference
in this model. If the spike is rotation invariant, we show that standard spectral
PCA is optimal. However, for more general priors, both PCA and the existing approximate
message-passing algorithm (AMP) fall short of achieving the information-theoretic
limits, which we compute using the replica method from statistical physics. We
thus propose an AMP, inspired by the theory of adaptive Thouless–Anderson–Palmer
equations, which is empirically observed to saturate the conjectured theoretical
limit. This AMP comes with a rigorous state evolution analysis tracking its performance.
Although we focus on specific noise distributions, our methodology can be generalized
to a wide class of trace matrix ensembles at the cost of more involved expressions.
Finally, despite the seemingly strong assumption of rotation-invariant noise,
our theory empirically predicts algorithmic performance on real data, pointing
at strong universality properties.
acknowledgement: J.B. was funded by the European Union (ERC, CHORAL, project number
101039794). Views and opinions expressed are however those of the author(s) only
and do not necessarily reflect those of the European Union or the European Research
Council. Neither the European Union nor the granting authority can be held responsible
for them. M.M. was supported by the 2019 Lopez-Loreta Prize. We would like to thank
the reviewers for the insightful comments and, in particular, for suggesting the
BAMP-inspired denoisers leading to AMP-AP.
article_number: e2302028120
article_processing_charge: Yes (in subscription journal)
article_type: original
author:
- first_name: Jean
full_name: Barbier, Jean
last_name: Barbier
- first_name: Francesco
full_name: Camilli, Francesco
last_name: Camilli
- first_name: Marco
full_name: Mondelli, Marco
id: 27EB676C-8706-11E9-9510-7717E6697425
last_name: Mondelli
orcid: 0000-0002-3242-7020
- first_name: Manuel
full_name: Sáenz, Manuel
last_name: Sáenz
citation:
ama: Barbier J, Camilli F, Mondelli M, Sáenz M. Fundamental limits in structured
principal component analysis and how to reach them. Proceedings of the National
Academy of Sciences of the United States of America. 2023;120(30). doi:10.1073/pnas.2302028120
apa: Barbier, J., Camilli, F., Mondelli, M., & Sáenz, M. (2023). Fundamental
limits in structured principal component analysis and how to reach them. Proceedings
of the National Academy of Sciences of the United States of America. National
Academy of Sciences. https://doi.org/10.1073/pnas.2302028120
chicago: Barbier, Jean, Francesco Camilli, Marco Mondelli, and Manuel Sáenz. “Fundamental
Limits in Structured Principal Component Analysis and How to Reach Them.” Proceedings
of the National Academy of Sciences of the United States of America. National
Academy of Sciences, 2023. https://doi.org/10.1073/pnas.2302028120.
ieee: J. Barbier, F. Camilli, M. Mondelli, and M. Sáenz, “Fundamental limits in
structured principal component analysis and how to reach them,” Proceedings
of the National Academy of Sciences of the United States of America, vol.
120, no. 30. National Academy of Sciences, 2023.
ista: Barbier J, Camilli F, Mondelli M, Sáenz M. 2023. Fundamental limits in structured
principal component analysis and how to reach them. Proceedings of the National
Academy of Sciences of the United States of America. 120(30), e2302028120.
mla: Barbier, Jean, et al. “Fundamental Limits in Structured Principal Component
Analysis and How to Reach Them.” Proceedings of the National Academy of Sciences
of the United States of America, vol. 120, no. 30, e2302028120, National Academy
of Sciences, 2023, doi:10.1073/pnas.2302028120.
short: J. Barbier, F. Camilli, M. Mondelli, M. Sáenz, Proceedings of the National
Academy of Sciences of the United States of America 120 (2023).
date_created: 2023-07-30T22:01:02Z
date_published: 2023-07-25T00:00:00Z
date_updated: 2023-10-17T11:44:55Z
day: '25'
ddc:
- '000'
department:
- _id: MaMo
doi: 10.1073/pnas.2302028120
external_id:
pmid:
- '37463204'
file:
- access_level: open_access
checksum: 1fc06228afdb3aa80cf8e7766bcf9dc5
content_type: application/pdf
creator: dernst
date_created: 2023-07-31T07:30:48Z
date_updated: 2023-07-31T07:30:48Z
file_id: '13323'
file_name: 2023_PNAS_Barbier.pdf
file_size: 995933
relation: main_file
success: 1
file_date_updated: 2023-07-31T07:30:48Z
has_accepted_license: '1'
intvolume: ' 120'
issue: '30'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 059876FA-7A3F-11EA-A408-12923DDC885E
name: Prix Lopez-Loretta 2019 - Marco Mondelli
publication: Proceedings of the National Academy of Sciences of the United States
of America
publication_identifier:
eissn:
- 1091-6490
publication_status: published
publisher: National Academy of Sciences
quality_controlled: '1'
related_material:
link:
- relation: software
url: https://github.com/fcamilli95/Structured-PCA-
scopus_import: '1'
status: public
title: Fundamental limits in structured principal component analysis and how to reach
them
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 120
year: '2023'
...
---
_id: '14037'
abstract:
- lang: eng
text: 'Traditionally, nuclear spin is not considered to affect biological processes.
Recently, this has changed as isotopic fractionation that deviates from classical
mass dependence was reported both in vitro and in vivo. In these cases, the isotopic
effect correlates with the nuclear magnetic spin. Here, we show nuclear spin effects
using stable oxygen isotopes (16O, 17O, and 18O) in two separate setups: an artificial
dioxygen production system and biological aquaporin channels in cells. We observe
that oxygen dynamics in chiral environments (in particular its transport) depend
on nuclear spin, suggesting future applications for controlled isotope separation
to be used, for instance, in NMR. To demonstrate the mechanism behind our findings,
we formulate theoretical models based on a nuclear-spin-enhanced switch between
electronic spin states. Accounting for the role of nuclear spin in biology can
provide insights into the role of quantum effects in living systems and help inspire
the development of future biotechnology solutions.'
acknowledgement: N.M.-S. acknowledges the support of the Ministry of Energy, Israel,
as part of the scholarship program for graduate students in the fields of energy.
M.L. acknowledges support by the European Research Council (ERC) Starting Grant
No. 801770 (ANGULON). Y.P. acknowledges the support of the Ministry of Innovation,
Science and Technology, Israel Grant No. 1001593872. Y.P acknowledges the support
of the BSF-NSF 094 Grant No. 2022503.
article_number: e2300828120
article_processing_charge: Yes (in subscription journal)
article_type: original
author:
- first_name: Ofek
full_name: Vardi, Ofek
last_name: Vardi
- first_name: Naama
full_name: Maroudas-Sklare, Naama
last_name: Maroudas-Sklare
- first_name: Yuval
full_name: Kolodny, Yuval
last_name: Kolodny
- first_name: Artem
full_name: Volosniev, Artem
id: 37D278BC-F248-11E8-B48F-1D18A9856A87
last_name: Volosniev
orcid: 0000-0003-0393-5525
- first_name: Amijai
full_name: Saragovi, Amijai
last_name: Saragovi
- first_name: Nir
full_name: Galili, Nir
last_name: Galili
- first_name: Stav
full_name: Ferrera, Stav
last_name: Ferrera
- first_name: Areg
full_name: Ghazaryan, Areg
id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
last_name: Ghazaryan
orcid: 0000-0001-9666-3543
- first_name: Nir
full_name: Yuran, Nir
last_name: Yuran
- first_name: Hagit P.
full_name: Affek, Hagit P.
last_name: Affek
- first_name: Boaz
full_name: Luz, Boaz
last_name: Luz
- first_name: Yonaton
full_name: Goldsmith, Yonaton
last_name: Goldsmith
- first_name: Nir
full_name: Keren, Nir
last_name: Keren
- first_name: Shira
full_name: Yochelis, Shira
last_name: Yochelis
- first_name: Itay
full_name: Halevy, Itay
last_name: Halevy
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Yossi
full_name: Paltiel, Yossi
last_name: Paltiel
citation:
ama: Vardi O, Maroudas-Sklare N, Kolodny Y, et al. Nuclear spin effects in biological
processes. Proceedings of the National Academy of Sciences of the United States
of America. 2023;120(32). doi:10.1073/pnas.2300828120
apa: Vardi, O., Maroudas-Sklare, N., Kolodny, Y., Volosniev, A., Saragovi, A., Galili,
N., … Paltiel, Y. (2023). Nuclear spin effects in biological processes. Proceedings
of the National Academy of Sciences of the United States of America. National
Academy of Sciences. https://doi.org/10.1073/pnas.2300828120
chicago: Vardi, Ofek, Naama Maroudas-Sklare, Yuval Kolodny, Artem Volosniev, Amijai
Saragovi, Nir Galili, Stav Ferrera, et al. “Nuclear Spin Effects in Biological
Processes.” Proceedings of the National Academy of Sciences of the United States
of America. National Academy of Sciences, 2023. https://doi.org/10.1073/pnas.2300828120.
ieee: O. Vardi et al., “Nuclear spin effects in biological processes,” Proceedings
of the National Academy of Sciences of the United States of America, vol.
120, no. 32. National Academy of Sciences, 2023.
ista: Vardi O, Maroudas-Sklare N, Kolodny Y, Volosniev A, Saragovi A, Galili N,
Ferrera S, Ghazaryan A, Yuran N, Affek HP, Luz B, Goldsmith Y, Keren N, Yochelis
S, Halevy I, Lemeshko M, Paltiel Y. 2023. Nuclear spin effects in biological processes.
Proceedings of the National Academy of Sciences of the United States of America.
120(32), e2300828120.
mla: Vardi, Ofek, et al. “Nuclear Spin Effects in Biological Processes.” Proceedings
of the National Academy of Sciences of the United States of America, vol.
120, no. 32, e2300828120, National Academy of Sciences, 2023, doi:10.1073/pnas.2300828120.
short: O. Vardi, N. Maroudas-Sklare, Y. Kolodny, A. Volosniev, A. Saragovi, N. Galili,
S. Ferrera, A. Ghazaryan, N. Yuran, H.P. Affek, B. Luz, Y. Goldsmith, N. Keren,
S. Yochelis, I. Halevy, M. Lemeshko, Y. Paltiel, Proceedings of the National Academy
of Sciences of the United States of America 120 (2023).
date_created: 2023-08-13T22:01:12Z
date_published: 2023-07-31T00:00:00Z
date_updated: 2023-10-17T11:45:25Z
day: '31'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1073/pnas.2300828120
ec_funded: 1
external_id:
pmid:
- '37523549'
file:
- access_level: open_access
checksum: a5ed64788a5acef9b9a300a26fa5a177
content_type: application/pdf
creator: dernst
date_created: 2023-08-14T07:43:45Z
date_updated: 2023-08-14T07:43:45Z
file_id: '14047'
file_name: 2023_PNAS_Vardi.pdf
file_size: 1003092
relation: main_file
success: 1
file_date_updated: 2023-08-14T07:43:45Z
has_accepted_license: '1'
intvolume: ' 120'
issue: '32'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc-nd/4.0/
month: '07'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '801770'
name: 'Angulon: physics and applications of a new quasiparticle'
publication: Proceedings of the National Academy of Sciences of the United States
of America
publication_identifier:
eissn:
- 1091-6490
publication_status: published
publisher: National Academy of Sciences
quality_controlled: '1'
scopus_import: '1'
status: public
title: Nuclear spin effects in biological processes
tmp:
image: /images/cc_by_nc_nd.png
legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
(CC BY-NC-ND 4.0)
short: CC BY-NC-ND (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 120
year: '2023'
...
---
_id: '12683'
abstract:
- lang: eng
text: We study the eigenvalue trajectories of a time dependent matrix Gt=H+itvv∗
for t≥0, where H is an N×N Hermitian random matrix and v is a unit vector. In
particular, we establish that with high probability, an outlier can be distinguished
at all times t>1+N−1/3+ϵ, for any ϵ>0. The study of this natural process combines
elements of Hermitian and non-Hermitian analysis, and illustrates some aspects
of the intrinsic instability of (even weakly) non-Hermitian matrices.
acknowledgement: G. Dubach gratefully acknowledges funding from the European Union’s
Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie
Grant Agreement No. 754411. L. Erdős is supported by ERC Advanced Grant “RMTBeyond”
No. 101020331.
article_processing_charge: No
article_type: original
author:
- first_name: Guillaume
full_name: Dubach, Guillaume
id: D5C6A458-10C4-11EA-ABF4-A4B43DDC885E
last_name: Dubach
orcid: 0000-0001-6892-8137
- first_name: László
full_name: Erdös, László
id: 4DBD5372-F248-11E8-B48F-1D18A9856A87
last_name: Erdös
orcid: 0000-0001-5366-9603
citation:
ama: Dubach G, Erdös L. Dynamics of a rank-one perturbation of a Hermitian matrix.
Electronic Communications in Probability. 2023;28:1-13. doi:10.1214/23-ECP516
apa: Dubach, G., & Erdös, L. (2023). Dynamics of a rank-one perturbation of
a Hermitian matrix. Electronic Communications in Probability. Institute
of Mathematical Statistics. https://doi.org/10.1214/23-ECP516
chicago: Dubach, Guillaume, and László Erdös. “Dynamics of a Rank-One Perturbation
of a Hermitian Matrix.” Electronic Communications in Probability. Institute
of Mathematical Statistics, 2023. https://doi.org/10.1214/23-ECP516.
ieee: G. Dubach and L. Erdös, “Dynamics of a rank-one perturbation of a Hermitian
matrix,” Electronic Communications in Probability, vol. 28. Institute of
Mathematical Statistics, pp. 1–13, 2023.
ista: Dubach G, Erdös L. 2023. Dynamics of a rank-one perturbation of a Hermitian
matrix. Electronic Communications in Probability. 28, 1–13.
mla: Dubach, Guillaume, and László Erdös. “Dynamics of a Rank-One Perturbation of
a Hermitian Matrix.” Electronic Communications in Probability, vol. 28,
Institute of Mathematical Statistics, 2023, pp. 1–13, doi:10.1214/23-ECP516.
short: G. Dubach, L. Erdös, Electronic Communications in Probability 28 (2023) 1–13.
date_created: 2023-02-26T23:01:01Z
date_published: 2023-02-08T00:00:00Z
date_updated: 2023-10-17T12:48:10Z
day: '08'
ddc:
- '510'
department:
- _id: LaEr
doi: 10.1214/23-ECP516
ec_funded: 1
external_id:
arxiv:
- '2108.13694'
isi:
- '000950650200005'
file:
- access_level: open_access
checksum: a1c6f0a3e33688fd71309c86a9aad86e
content_type: application/pdf
creator: dernst
date_created: 2023-02-27T09:43:27Z
date_updated: 2023-02-27T09:43:27Z
file_id: '12692'
file_name: 2023_ElectCommProbability_Dubach.pdf
file_size: 479105
relation: main_file
success: 1
file_date_updated: 2023-02-27T09:43:27Z
has_accepted_license: '1'
intvolume: ' 28'
isi: 1
language:
- iso: eng
month: '02'
oa: 1
oa_version: Published Version
page: 1-13
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
- _id: 62796744-2b32-11ec-9570-940b20777f1d
call_identifier: H2020
grant_number: '101020331'
name: Random matrices beyond Wigner-Dyson-Mehta
publication: Electronic Communications in Probability
publication_identifier:
eissn:
- 1083-589X
publication_status: published
publisher: Institute of Mathematical Statistics
quality_controlled: '1'
scopus_import: '1'
status: public
title: Dynamics of a rank-one perturbation of a Hermitian matrix
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 28
year: '2023'
...
---
_id: '12761'
abstract:
- lang: eng
text: "We consider the fluctuations of regular functions f of a Wigner matrix W
viewed as an entire matrix f (W). Going beyond the well-studied tracial mode,
Trf (W), which is equivalent to the customary linear statistics of eigenvalues,
we show that Trf (W)A is asymptotically normal for any nontrivial bounded deterministic
matrix A. We identify three different and asymptotically independent modes of
this fluctuation, corresponding to the tracial part, the traceless diagonal part
and the off-diagonal part of f (W) in the entire mesoscopic regime, where we find
that the off-diagonal modes fluctuate on a much smaller scale than the tracial
mode. As a main motivation to study CLT in such generality on small mesoscopic
scales, we determine\r\nthe fluctuations in the eigenstate thermalization hypothesis
(Phys. Rev. A 43 (1991) 2046–2049), that is, prove that the eigenfunction overlaps
with any deterministic matrix are asymptotically Gaussian after a small spectral
averaging. Finally, in the macroscopic regime our result also generalizes (Zh.
Mat. Fiz. Anal. Geom. 9 (2013) 536–581, 611, 615) to complex W and to all crossover
ensembles in between. The main technical inputs are the recent\r\nmultiresolvent
local laws with traceless deterministic matrices from the companion paper (Comm.
Math. Phys. 388 (2021) 1005–1048)."
acknowledgement: The second author is partially funded by the ERC Advanced Grant “RMTBEYOND”
No. 101020331. The third author is supported by Dr. Max Rössler, the Walter Haefner
Foundation and the ETH Zürich Foundation.
article_processing_charge: No
article_type: original
author:
- first_name: Giorgio
full_name: Cipolloni, Giorgio
id: 42198EFA-F248-11E8-B48F-1D18A9856A87
last_name: Cipolloni
orcid: 0000-0002-4901-7992
- first_name: László
full_name: Erdös, László
id: 4DBD5372-F248-11E8-B48F-1D18A9856A87
last_name: Erdös
orcid: 0000-0001-5366-9603
- first_name: Dominik J
full_name: Schröder, Dominik J
id: 408ED176-F248-11E8-B48F-1D18A9856A87
last_name: Schröder
orcid: 0000-0002-2904-1856
citation:
ama: Cipolloni G, Erdös L, Schröder DJ. Functional central limit theorems for Wigner
matrices. Annals of Applied Probability. 2023;33(1):447-489. doi:10.1214/22-AAP1820
apa: Cipolloni, G., Erdös, L., & Schröder, D. J. (2023). Functional central
limit theorems for Wigner matrices. Annals of Applied Probability. Institute
of Mathematical Statistics. https://doi.org/10.1214/22-AAP1820
chicago: Cipolloni, Giorgio, László Erdös, and Dominik J Schröder. “Functional Central
Limit Theorems for Wigner Matrices.” Annals of Applied Probability. Institute
of Mathematical Statistics, 2023. https://doi.org/10.1214/22-AAP1820.
ieee: G. Cipolloni, L. Erdös, and D. J. Schröder, “Functional central limit theorems
for Wigner matrices,” Annals of Applied Probability, vol. 33, no. 1. Institute
of Mathematical Statistics, pp. 447–489, 2023.
ista: Cipolloni G, Erdös L, Schröder DJ. 2023. Functional central limit theorems
for Wigner matrices. Annals of Applied Probability. 33(1), 447–489.
mla: Cipolloni, Giorgio, et al. “Functional Central Limit Theorems for Wigner Matrices.”
Annals of Applied Probability, vol. 33, no. 1, Institute of Mathematical
Statistics, 2023, pp. 447–89, doi:10.1214/22-AAP1820.
short: G. Cipolloni, L. Erdös, D.J. Schröder, Annals of Applied Probability 33 (2023)
447–489.
date_created: 2023-03-26T22:01:08Z
date_published: 2023-02-01T00:00:00Z
date_updated: 2023-10-17T12:48:52Z
day: '01'
department:
- _id: LaEr
doi: 10.1214/22-AAP1820
ec_funded: 1
external_id:
arxiv:
- '2012.13218'
isi:
- '000946432400015'
intvolume: ' 33'
isi: 1
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2012.13218
month: '02'
oa: 1
oa_version: Preprint
page: 447-489
project:
- _id: 62796744-2b32-11ec-9570-940b20777f1d
call_identifier: H2020
grant_number: '101020331'
name: Random matrices beyond Wigner-Dyson-Mehta
publication: Annals of Applied Probability
publication_identifier:
issn:
- 1050-5164
publication_status: published
publisher: Institute of Mathematical Statistics
quality_controlled: '1'
scopus_import: '1'
status: public
title: Functional central limit theorems for Wigner matrices
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 33
year: '2023'
...
---
_id: '8682'
abstract:
- lang: eng
text: It is known that the Brauer--Manin obstruction to the Hasse principle is vacuous
for smooth Fano hypersurfaces of dimension at least 3 over any number field. Moreover,
for such varieties it follows from a general conjecture of Colliot-Thélène that
the Brauer--Manin obstruction to the Hasse principle should be the only one, so
that the Hasse principle is expected to hold. Working over the field of rational
numbers and ordering Fano hypersurfaces of fixed degree and dimension by height,
we prove that almost every such hypersurface satisfies the Hasse principle provided
that the dimension is at least 3. This proves a conjecture of Poonen and Voloch
in every case except for cubic surfaces.
article_processing_charge: No
article_type: original
author:
- first_name: Timothy D
full_name: Browning, Timothy D
id: 35827D50-F248-11E8-B48F-1D18A9856A87
last_name: Browning
orcid: 0000-0002-8314-0177
- first_name: Pierre Le
full_name: Boudec, Pierre Le
last_name: Boudec
- first_name: Will
full_name: Sawin, Will
last_name: Sawin
citation:
ama: Browning TD, Boudec PL, Sawin W. The Hasse principle for random Fano hypersurfaces.
Annals of Mathematics. 2023;197(3):1115-1203. doi:10.4007/annals.2023.197.3.3
apa: Browning, T. D., Boudec, P. L., & Sawin, W. (2023). The Hasse principle
for random Fano hypersurfaces. Annals of Mathematics. Princeton University.
https://doi.org/10.4007/annals.2023.197.3.3
chicago: Browning, Timothy D, Pierre Le Boudec, and Will Sawin. “The Hasse Principle
for Random Fano Hypersurfaces.” Annals of Mathematics. Princeton University,
2023. https://doi.org/10.4007/annals.2023.197.3.3.
ieee: T. D. Browning, P. L. Boudec, and W. Sawin, “The Hasse principle for random
Fano hypersurfaces,” Annals of Mathematics, vol. 197, no. 3. Princeton
University, pp. 1115–1203, 2023.
ista: Browning TD, Boudec PL, Sawin W. 2023. The Hasse principle for random Fano
hypersurfaces. Annals of Mathematics. 197(3), 1115–1203.
mla: Browning, Timothy D., et al. “The Hasse Principle for Random Fano Hypersurfaces.”
Annals of Mathematics, vol. 197, no. 3, Princeton University, 2023, pp.
1115–203, doi:10.4007/annals.2023.197.3.3.
short: T.D. Browning, P.L. Boudec, W. Sawin, Annals of Mathematics 197 (2023) 1115–1203.
date_created: 2020-10-19T14:28:50Z
date_published: 2023-05-01T00:00:00Z
date_updated: 2023-10-17T12:47:43Z
day: '01'
department:
- _id: TiBr
doi: 10.4007/annals.2023.197.3.3
external_id:
arxiv:
- '2006.02356'
isi:
- '000966611000003'
intvolume: ' 197'
isi: 1
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2006.02356
month: '05'
oa: 1
oa_version: Preprint
page: 1115-1203
publication: Annals of Mathematics
publication_identifier:
issn:
- 0003-486X
publication_status: published
publisher: Princeton University
quality_controlled: '1'
related_material:
link:
- description: News on IST Homepage
relation: press_release
url: https://ist.ac.at/en/news/when-is-necessary-sufficient/
status: public
title: The Hasse principle for random Fano hypersurfaces
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 197
year: '2023'
...
---
_id: '12706'
abstract:
- lang: eng
text: Allometric settings of population dynamics models are appealing due to their
parsimonious nature and broad utility when studying system level effects. Here,
we parameterise the size-scaled Rosenzweig-MacArthur differential equations to
eliminate prey-mass dependency, facilitating an in depth analytic study of the
equations which incorporates scaling parameters’ contributions to coexistence.
We define the functional response term to match empirical findings, and examine
situations where metabolic theory derivations and observation diverge. The dynamical
properties of the Rosenzweig-MacArthur system, encompassing the distribution of
size-abundance equilibria, the scaling of period and amplitude of population cycling,
and relationships between predator and prey abundances, are consistent with empirical
observation. Our parameterisation is an accurate minimal model across 15+ orders
of mass magnitude.
acknowledgement: "This research was supported by an Australian Government Research
Training Program\r\n(RTP) Scholarship to JCM (https://www.dese.gov.au), and LB is
supported by the Centre de\r\nrecherche sur le vieillissement Fellowship Program.
The funders had no role in study design, data collection and analysis, decision
to publish, or preparation of the manuscript."
article_processing_charge: No
article_type: original
author:
- first_name: Jody C.
full_name: Mckerral, Jody C.
last_name: Mckerral
- first_name: Maria
full_name: Kleshnina, Maria
id: 4E21749C-F248-11E8-B48F-1D18A9856A87
last_name: Kleshnina
- first_name: Vladimir
full_name: Ejov, Vladimir
last_name: Ejov
- first_name: Louise
full_name: Bartle, Louise
last_name: Bartle
- first_name: James G.
full_name: Mitchell, James G.
last_name: Mitchell
- first_name: Jerzy A.
full_name: Filar, Jerzy A.
last_name: Filar
citation:
ama: Mckerral JC, Kleshnina M, Ejov V, Bartle L, Mitchell JG, Filar JA. Empirical
parameterisation and dynamical analysis of the allometric Rosenzweig-MacArthur
equations. PLoS One. 2023;18(2):e0279838. doi:10.1371/journal.pone.0279838
apa: Mckerral, J. C., Kleshnina, M., Ejov, V., Bartle, L., Mitchell, J. G., &
Filar, J. A. (2023). Empirical parameterisation and dynamical analysis of the
allometric Rosenzweig-MacArthur equations. PLoS One. Public Library of
Science. https://doi.org/10.1371/journal.pone.0279838
chicago: Mckerral, Jody C., Maria Kleshnina, Vladimir Ejov, Louise Bartle, James
G. Mitchell, and Jerzy A. Filar. “Empirical Parameterisation and Dynamical Analysis
of the Allometric Rosenzweig-MacArthur Equations.” PLoS One. Public Library
of Science, 2023. https://doi.org/10.1371/journal.pone.0279838.
ieee: J. C. Mckerral, M. Kleshnina, V. Ejov, L. Bartle, J. G. Mitchell, and J. A.
Filar, “Empirical parameterisation and dynamical analysis of the allometric Rosenzweig-MacArthur
equations,” PLoS One, vol. 18, no. 2. Public Library of Science, p. e0279838,
2023.
ista: Mckerral JC, Kleshnina M, Ejov V, Bartle L, Mitchell JG, Filar JA. 2023. Empirical
parameterisation and dynamical analysis of the allometric Rosenzweig-MacArthur
equations. PLoS One. 18(2), e0279838.
mla: Mckerral, Jody C., et al. “Empirical Parameterisation and Dynamical Analysis
of the Allometric Rosenzweig-MacArthur Equations.” PLoS One, vol. 18, no.
2, Public Library of Science, 2023, p. e0279838, doi:10.1371/journal.pone.0279838.
short: J.C. Mckerral, M. Kleshnina, V. Ejov, L. Bartle, J.G. Mitchell, J.A. Filar,
PLoS One 18 (2023) e0279838.
date_created: 2023-03-05T23:01:05Z
date_published: 2023-02-27T00:00:00Z
date_updated: 2023-10-17T12:53:30Z
day: '27'
ddc:
- '000'
department:
- _id: KrCh
doi: 10.1371/journal.pone.0279838
external_id:
isi:
- '000996122900022'
pmid:
- '36848357'
file:
- access_level: open_access
checksum: 798ed5739a4117b03173e5d56e0534c9
content_type: application/pdf
creator: cchlebak
date_created: 2023-03-07T10:26:45Z
date_updated: 2023-03-07T10:26:45Z
file_id: '12712'
file_name: 2023_PLOSOne_Mckerral.pdf
file_size: 1257003
relation: main_file
success: 1
file_date_updated: 2023-03-07T10:26:45Z
has_accepted_license: '1'
intvolume: ' 18'
isi: 1
issue: '2'
language:
- iso: eng
month: '02'
oa: 1
oa_version: Published Version
page: e0279838
pmid: 1
publication: PLoS One
publication_identifier:
eissn:
- 1932-6203
publication_status: published
publisher: Public Library of Science
quality_controlled: '1'
scopus_import: '1'
status: public
title: Empirical parameterisation and dynamical analysis of the allometric Rosenzweig-MacArthur
equations
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 18
year: '2023'
...
---
_id: '13202'
abstract:
- lang: eng
text: Phosphatidylinositol-4,5-bisphosphate (PI(4,5)P2) plays an essential role
in neuronal activities through interaction with various proteins involved in signaling
at membranes. However, the distribution pattern of PI(4,5)P2 and the association
with these proteins on the neuronal cell membranes remain elusive. In this study,
we established a method for visualizing PI(4,5)P2 by SDS-digested freeze-fracture
replica labeling (SDS-FRL) to investigate the quantitative nanoscale distribution
of PI(4,5)P2 in cryo-fixed brain. We demonstrate that PI(4,5)P2 forms tiny clusters
with a mean size of ∼1000 nm2 rather than randomly distributed in cerebellar neuronal
membranes in male C57BL/6J mice. These clusters show preferential accumulation
in specific membrane compartments of different cell types, in particular, in Purkinje
cell (PC) spines and granule cell (GC) presynaptic active zones. Furthermore,
we revealed extensive association of PI(4,5)P2 with CaV2.1 and GIRK3 across different
membrane compartments, whereas its association with mGluR1α was compartment specific.
These results suggest that our SDS-FRL method provides valuable insights into
the physiological functions of PI(4,5)P2 in neurons.
acknowledged_ssus:
- _id: EM-Fac
acknowledgement: This work was supported by The Institute of Science and Technology
(IST) Austria, the European Union's Horizon 2020 Research and Innovation Program
under the Marie Skłodowska-Curie Grant Agreement No. 793482 (to K.E.) and by the
European Research Council (ERC) Grant Agreement No. 694539 (to R.S.). We thank Nicoleta
Condruz (IST Austria, Klosterneuburg, Austria) for technical assistance with sample
preparation, the Electron Microscopy Facility of IST Austria (Klosterneuburg, Austria)
for technical support with EM works, Natalia Baranova (University of Vienna, Vienna,
Austria) and Martin Loose (IST Austria, Klosterneuburg, Austria) for advice on liposome
preparation, and Yugo Fukazawa (University of Fukui, Fukui, Japan) for comments.
article_processing_charge: No
article_type: original
author:
- first_name: Kohgaku
full_name: Eguchi, Kohgaku
id: 2B7846DC-F248-11E8-B48F-1D18A9856A87
last_name: Eguchi
orcid: 0000-0002-6170-2546
- first_name: Elodie
full_name: Le Monnier, Elodie
id: 3B59276A-F248-11E8-B48F-1D18A9856A87
last_name: Le Monnier
- first_name: Ryuichi
full_name: Shigemoto, Ryuichi
id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
last_name: Shigemoto
orcid: 0000-0001-8761-9444
citation:
ama: Eguchi K, Le Monnier E, Shigemoto R. Nanoscale phosphoinositide distribution
on cell membranes of mouse cerebellar neurons. The Journal of Neuroscience.
2023;43(23):4197-4216. doi:10.1523/JNEUROSCI.1514-22.2023
apa: Eguchi, K., Le Monnier, E., & Shigemoto, R. (2023). Nanoscale phosphoinositide
distribution on cell membranes of mouse cerebellar neurons. The Journal of
Neuroscience. Society for Neuroscience. https://doi.org/10.1523/JNEUROSCI.1514-22.2023
chicago: Eguchi, Kohgaku, Elodie Le Monnier, and Ryuichi Shigemoto. “Nanoscale Phosphoinositide
Distribution on Cell Membranes of Mouse Cerebellar Neurons.” The Journal of
Neuroscience. Society for Neuroscience, 2023. https://doi.org/10.1523/JNEUROSCI.1514-22.2023.
ieee: K. Eguchi, E. Le Monnier, and R. Shigemoto, “Nanoscale phosphoinositide distribution
on cell membranes of mouse cerebellar neurons,” The Journal of Neuroscience,
vol. 43, no. 23. Society for Neuroscience, pp. 4197–4216, 2023.
ista: Eguchi K, Le Monnier E, Shigemoto R. 2023. Nanoscale phosphoinositide distribution
on cell membranes of mouse cerebellar neurons. The Journal of Neuroscience. 43(23),
4197–4216.
mla: Eguchi, Kohgaku, et al. “Nanoscale Phosphoinositide Distribution on Cell Membranes
of Mouse Cerebellar Neurons.” The Journal of Neuroscience, vol. 43, no.
23, Society for Neuroscience, 2023, pp. 4197–216, doi:10.1523/JNEUROSCI.1514-22.2023.
short: K. Eguchi, E. Le Monnier, R. Shigemoto, The Journal of Neuroscience 43 (2023)
4197–4216.
date_created: 2023-07-09T22:01:12Z
date_published: 2023-06-07T00:00:00Z
date_updated: 2023-10-18T07:12:47Z
day: '07'
ddc:
- '570'
department:
- _id: RySh
doi: 10.1523/JNEUROSCI.1514-22.2023
ec_funded: 1
external_id:
isi:
- '001020132100005'
pmid:
- '37160366'
file:
- access_level: open_access
checksum: 70b2141870e0bf1c94fd343e18fdbc32
content_type: application/pdf
creator: alisjak
date_created: 2023-07-10T09:04:58Z
date_updated: 2023-07-10T09:04:58Z
file_id: '13205'
file_name: 2023_JN_Eguchi.pdf
file_size: 7794425
relation: main_file
success: 1
file_date_updated: 2023-07-10T09:04:58Z
has_accepted_license: '1'
intvolume: ' 43'
isi: 1
issue: '23'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
page: 4197-4216
pmid: 1
project:
- _id: 2659CC84-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '793482'
name: 'Ultrastructural analysis of phosphoinositides in nerve terminals: distribution,
dynamics and physiological roles in synaptic transmission'
- _id: 25CA28EA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '694539'
name: 'In situ analysis of single channel subunit composition in neurons: physiological
implication in synaptic plasticity and behaviour'
publication: The Journal of Neuroscience
publication_identifier:
eissn:
- 1529-2401
issn:
- 0270-6474
publication_status: published
publisher: Society for Neuroscience
quality_controlled: '1'
scopus_import: '1'
status: public
title: Nanoscale phosphoinositide distribution on cell membranes of mouse cerebellar
neurons
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 43
year: '2023'
...
---
_id: '12916'
abstract:
- lang: eng
text: "We apply a variant of the square-sieve to produce an upper bound for the
number of rational points of bounded height on a family of surfaces that admit
a fibration over P1 whose general fibre is a hyperelliptic curve. The implied
constant does not depend on the coefficients of the polynomial defining the surface.\r\n"
article_processing_charge: No
article_type: original
author:
- first_name: Dante
full_name: Bonolis, Dante
id: 6A459894-5FDD-11E9-AF35-BB24E6697425
last_name: Bonolis
- first_name: Timothy D
full_name: Browning, Timothy D
id: 35827D50-F248-11E8-B48F-1D18A9856A87
last_name: Browning
orcid: 0000-0002-8314-0177
citation:
ama: Bonolis D, Browning TD. Uniform bounds for rational points on hyperelliptic
fibrations. Annali della Scuola Normale Superiore di Pisa - Classe di Scienze.
2023;24(1):173-204. doi:10.2422/2036-2145.202010_018
apa: Bonolis, D., & Browning, T. D. (2023). Uniform bounds for rational points
on hyperelliptic fibrations. Annali Della Scuola Normale Superiore Di Pisa
- Classe Di Scienze. Scuola Normale Superiore - Edizioni della Normale. https://doi.org/10.2422/2036-2145.202010_018
chicago: Bonolis, Dante, and Timothy D Browning. “Uniform Bounds for Rational Points
on Hyperelliptic Fibrations.” Annali Della Scuola Normale Superiore Di Pisa
- Classe Di Scienze. Scuola Normale Superiore - Edizioni della Normale, 2023.
https://doi.org/10.2422/2036-2145.202010_018.
ieee: D. Bonolis and T. D. Browning, “Uniform bounds for rational points on hyperelliptic
fibrations,” Annali della Scuola Normale Superiore di Pisa - Classe di Scienze,
vol. 24, no. 1. Scuola Normale Superiore - Edizioni della Normale, pp. 173–204,
2023.
ista: Bonolis D, Browning TD. 2023. Uniform bounds for rational points on hyperelliptic
fibrations. Annali della Scuola Normale Superiore di Pisa - Classe di Scienze.
24(1), 173–204.
mla: Bonolis, Dante, and Timothy D. Browning. “Uniform Bounds for Rational Points
on Hyperelliptic Fibrations.” Annali Della Scuola Normale Superiore Di Pisa
- Classe Di Scienze, vol. 24, no. 1, Scuola Normale Superiore - Edizioni della
Normale, 2023, pp. 173–204, doi:10.2422/2036-2145.202010_018.
short: D. Bonolis, T.D. Browning, Annali Della Scuola Normale Superiore Di Pisa
- Classe Di Scienze 24 (2023) 173–204.
date_created: 2023-05-07T22:01:04Z
date_published: 2023-02-16T00:00:00Z
date_updated: 2023-10-18T06:54:30Z
day: '16'
department:
- _id: TiBr
doi: 10.2422/2036-2145.202010_018
external_id:
arxiv:
- '2007.14182'
intvolume: ' 24'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2007.14182
month: '02'
oa: 1
oa_version: Preprint
page: 173-204
publication: Annali della Scuola Normale Superiore di Pisa - Classe di Scienze
publication_identifier:
eissn:
- 2036-2145
issn:
- 0391-173X
publication_status: published
publisher: Scuola Normale Superiore - Edizioni della Normale
quality_controlled: '1'
scopus_import: '1'
status: public
title: Uniform bounds for rational points on hyperelliptic fibrations
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 24
year: '2023'
...
---
_id: '14422'
abstract:
- lang: eng
text: "Animals exhibit a remarkable ability to learn and remember new behaviors,
skills, and associations throughout their lifetime. These capabilities are made
possible thanks to a variety of\r\nchanges in the brain throughout adulthood,
regrouped under the term \"plasticity\". Some cells\r\nin the brain —neurons—
and specifically changes in the connections between neurons, the\r\nsynapses,
were shown to be crucial for the formation, selection, and consolidation of memories\r\nfrom
past experiences. These ongoing changes of synapses across time are called synaptic\r\nplasticity.
Understanding how a myriad of biochemical processes operating at individual\r\nsynapses
can somehow work in concert to give rise to meaningful changes in behavior is
a\r\nfascinating problem and an active area of research.\r\nHowever, the experimental
search for the precise plasticity mechanisms at play in the brain\r\nis daunting,
as it is difficult to control and observe synapses during learning. Theoretical\r\napproaches
have thus been the default method to probe the plasticity-behavior connection.
Such\r\nstudies attempt to extract unifying principles across synapses and model
all observed synaptic\r\nchanges using plasticity rules: equations that govern
the evolution of synaptic strengths across\r\ntime in neuronal network models.
These rules can use many relevant quantities to determine\r\nthe magnitude of
synaptic changes, such as the precise timings of pre- and postsynaptic\r\naction
potentials, the recent neuronal activity levels, the state of neighboring synapses,
etc.\r\nHowever, analytical studies rely heavily on human intuition and are forced
to make simplifying\r\nassumptions about plasticity rules.\r\nIn this thesis,
we aim to assist and augment human intuition in this search for plasticity rules.\r\nWe
explore whether a numerical approach could automatically discover the plasticity
rules\r\nthat elicit desired behaviors in large networks of interconnected neurons.
This approach is\r\ndubbed meta-learning synaptic plasticity: learning plasticity
rules which themselves will make\r\nneuronal networks learn how to solve a desired
task. We first write all the potential plasticity\r\nmechanisms to consider using
a single expression with adjustable parameters. We then optimize\r\nthese plasticity
parameters using evolutionary strategies or Bayesian inference on tasks known\r\nto
involve synaptic plasticity, such as familiarity detection and network stabilization.\r\nWe
show that these automated approaches are powerful tools, able to complement established\r\nanalytical
methods. By comprehensively screening plasticity rules at all synapse types in\r\nrealistic,
spiking neuronal network models, we discover entire sets of degenerate plausible\r\nplasticity
rules that reliably elicit memory-related behaviors. Our approaches allow for
more\r\nrobust experimental predictions, by abstracting out the idiosyncrasies
of individual plasticity\r\nrules, and provide fresh insights on synaptic plasticity
in spiking network models.\r\n"
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Basile J
full_name: Confavreux, Basile J
id: C7610134-B532-11EA-BD9F-F5753DDC885E
last_name: Confavreux
citation:
ama: 'Confavreux BJ. Synapseek: Meta-learning synaptic plasticity rules. 2023. doi:10.15479/at:ista:14422'
apa: 'Confavreux, B. J. (2023). Synapseek: Meta-learning synaptic plasticity
rules. Institute of Science and Technology Austria. https://doi.org/10.15479/at:ista:14422'
chicago: 'Confavreux, Basile J. “Synapseek: Meta-Learning Synaptic Plasticity Rules.”
Institute of Science and Technology Austria, 2023. https://doi.org/10.15479/at:ista:14422.'
ieee: 'B. J. Confavreux, “Synapseek: Meta-learning synaptic plasticity rules,” Institute
of Science and Technology Austria, 2023.'
ista: 'Confavreux BJ. 2023. Synapseek: Meta-learning synaptic plasticity rules.
Institute of Science and Technology Austria.'
mla: 'Confavreux, Basile J. Synapseek: Meta-Learning Synaptic Plasticity Rules.
Institute of Science and Technology Austria, 2023, doi:10.15479/at:ista:14422.'
short: 'B.J. Confavreux, Synapseek: Meta-Learning Synaptic Plasticity Rules, Institute
of Science and Technology Austria, 2023.'
date_created: 2023-10-12T14:13:25Z
date_published: 2023-10-12T00:00:00Z
date_updated: 2023-10-18T09:20:56Z
day: '12'
ddc:
- '610'
degree_awarded: PhD
department:
- _id: GradSch
- _id: TiVo
doi: 10.15479/at:ista:14422
ec_funded: 1
file:
- access_level: closed
checksum: 7f636555eae7803323df287672fd13ed
content_type: application/pdf
creator: cchlebak
date_created: 2023-10-12T14:53:50Z
date_updated: 2023-10-12T14:54:52Z
embargo: 2024-10-12
embargo_to: open_access
file_id: '14424'
file_name: Confavreux_Thesis_2A.pdf
file_size: 30599717
relation: main_file
- access_level: closed
checksum: 725e85946db92290a4583a0de9779e1b
content_type: application/x-zip-compressed
creator: cchlebak
date_created: 2023-10-18T07:38:34Z
date_updated: 2023-10-18T07:56:08Z
file_id: '14440'
file_name: Confavreux Thesis.zip
file_size: 68406739
relation: source_file
file_date_updated: 2023-10-18T07:56:08Z
has_accepted_license: '1'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc-sa/4.0/
month: '10'
oa_version: Published Version
page: '148'
project:
- _id: 0aacfa84-070f-11eb-9043-d7eb2c709234
call_identifier: H2020
grant_number: '819603'
name: Learning the shape of synaptic plasticity rules for neuronal architectures
and function through machine learning.
publication_identifier:
issn:
- 2663 - 337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '9633'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Tim P
full_name: Vogels, Tim P
id: CB6FF8D2-008F-11EA-8E08-2637E6697425
last_name: Vogels
orcid: 0000-0003-3295-6181
title: 'Synapseek: Meta-learning synaptic plasticity rules'
tmp:
image: /images/cc_by_nc_sa.png
legal_code_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode
name: Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC
BY-NC-SA 4.0)
short: CC BY-NC-SA (4.0)
type: dissertation
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2023'
...
---
_id: '14374'
abstract:
- lang: eng
text: "Superconductivity has many important applications ranging from levitating
trains over qubits to MRI scanners. The phenomenon is successfully modeled by
Bardeen-Cooper-Schrieffer (BCS) theory. From a mathematical perspective, BCS theory
has been studied extensively for systems without boundary. However, little is
known in the presence of boundaries. With the help of numerical methods physicists
observed that the critical temperature may increase in the presence of a boundary.
The goal of this thesis is to understand the influence of boundaries on the critical
temperature in BCS theory and to give a first rigorous justification of these
observations. On the way, we also study two-body Schrödinger operators on domains
with boundaries and prove additional results for superconductors without boundary.\r\n\r\nBCS
theory is based on a non-linear functional, where the minimizer indicates whether
the system is superconducting or in the normal, non-superconducting state. By
considering the Hessian of the BCS functional at the normal state, one can analyze
whether the normal state is possibly a minimum of the BCS functional and estimate
the critical temperature. The Hessian turns out to be a linear operator resembling
a Schrödinger operator for two interacting particles, but with more complicated
kinetic energy. As a first step, we study the two-body Schrödinger operator in
the presence of boundaries.\r\nFor Neumann boundary conditions, we prove that
the addition of a boundary can create new eigenvalues, which correspond to the
two particles forming a bound state close to the boundary.\r\n\r\nSecond, we need
to understand superconductivity in the translation invariant setting. While in
three dimensions this has been extensively studied, there is no mathematical literature
for the one and two dimensional cases. In dimensions one and two, we compute the
weak coupling asymptotics of the critical temperature and the energy gap in the
translation invariant setting. We also prove that their ratio is independent of
the microscopic details of the model in the weak coupling limit; this property
is referred to as universality.\r\n\r\nIn the third part, we study the critical
temperature of superconductors in the presence of boundaries. We start by considering
the one-dimensional case of a half-line with contact interaction. Then, we generalize
the results to generic interactions and half-spaces in one, two and three dimensions.
Finally, we compare the critical temperature of a quarter space in two dimensions
to the critical temperatures of a half-space and of the full space."
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Barbara
full_name: Roos, Barbara
id: 5DA90512-D80F-11E9-8994-2E2EE6697425
last_name: Roos
orcid: 0000-0002-9071-5880
citation:
ama: Roos B. Boundary superconductivity in BCS theory. 2023. doi:10.15479/at:ista:14374
apa: Roos, B. (2023). Boundary superconductivity in BCS theory. Institute
of Science and Technology Austria. https://doi.org/10.15479/at:ista:14374
chicago: Roos, Barbara. “Boundary Superconductivity in BCS Theory.” Institute of
Science and Technology Austria, 2023. https://doi.org/10.15479/at:ista:14374.
ieee: B. Roos, “Boundary superconductivity in BCS theory,” Institute of Science
and Technology Austria, 2023.
ista: Roos B. 2023. Boundary superconductivity in BCS theory. Institute of Science
and Technology Austria.
mla: Roos, Barbara. Boundary Superconductivity in BCS Theory. Institute of
Science and Technology Austria, 2023, doi:10.15479/at:ista:14374.
short: B. Roos, Boundary Superconductivity in BCS Theory, Institute of Science and
Technology Austria, 2023.
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full_name: Seiringer, Robert
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orcid: 0000-0002-6781-0521
title: Boundary superconductivity in BCS theory
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abstract:
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text: We consider the linear BCS equation, determining the BCS critical temperature,
in the presence of a boundary, where Dirichlet boundary conditions are imposed.
In the one-dimensional case with point interactions, we prove that the critical
temperature is strictly larger than the bulk value, at least at weak coupling.
In particular, the Cooper-pair wave function localizes near the boundary, an effect
that cannot be modeled by effective Neumann boundary conditions on the order parameter
as often imposed in Ginzburg–Landau theory. We also show that the relative shift
in critical temperature vanishes if the coupling constant either goes to zero
or to infinity.
acknowledgement: We thank Egor Babaev for encouraging us to study this problem, and
Rupert Frank for many fruitful discussions. scussions. Funding. Funding from the
European Union’s Horizon 2020 research and innovation programme under the ERC grant
agreement No. 694227 (Barbara Roos and Robert Seiringer) is gratefully acknowledged.
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article_type: original
author:
- first_name: Christian
full_name: Hainzl, Christian
last_name: Hainzl
- first_name: Barbara
full_name: Roos, Barbara
id: 5DA90512-D80F-11E9-8994-2E2EE6697425
last_name: Roos
orcid: 0000-0002-9071-5880
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full_name: Seiringer, Robert
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Journal of Spectral Theory. 2023;12(4):1507–1540. doi:10.4171/JST/439
apa: Hainzl, C., Roos, B., & Seiringer, R. (2023). Boundary superconductivity
in the BCS model. Journal of Spectral Theory. EMS Press. https://doi.org/10.4171/JST/439
chicago: Hainzl, Christian, Barbara Roos, and Robert Seiringer. “Boundary Superconductivity
in the BCS Model.” Journal of Spectral Theory. EMS Press, 2023. https://doi.org/10.4171/JST/439.
ieee: C. Hainzl, B. Roos, and R. Seiringer, “Boundary superconductivity in the BCS
model,” Journal of Spectral Theory, vol. 12, no. 4. EMS Press, pp. 1507–1540,
2023.
ista: Hainzl C, Roos B, Seiringer R. 2023. Boundary superconductivity in the BCS
model. Journal of Spectral Theory. 12(4), 1507–1540.
mla: Hainzl, Christian, et al. “Boundary Superconductivity in the BCS Model.” Journal
of Spectral Theory, vol. 12, no. 4, EMS Press, 2023, pp. 1507–1540, doi:10.4171/JST/439.
short: C. Hainzl, B. Roos, R. Seiringer, Journal of Spectral Theory 12 (2023) 1507–1540.
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...