---
_id: '13278'
abstract:
- lang: eng
text: We present a numerical analysis of spin-1/2 fermions in a one-dimensional
harmonic potential in the presence of a magnetic point-like impurity at the center
of the trap. The model represents a few-body analogue of a magnetic impurity in
the vicinity of an s-wave superconductor. Already for a few particles we find
a ground-state level crossing between sectors with different fermion parities.
We interpret this crossing as a few-body precursor of a quantum phase transition,
which occurs when the impurity "breaks" a Cooper pair. This picture is further
corroborated by analyzing density-density correlations in momentum space. Finally,
we discuss how the system may be realized with existing cold-atoms platforms.
article_number: '006'
article_processing_charge: No
article_type: original
author:
- first_name: Lukas
full_name: Rammelmüller, Lukas
last_name: Rammelmüller
- first_name: David
full_name: Huber, David
last_name: Huber
- first_name: Matija
full_name: Čufar, Matija
last_name: Čufar
- first_name: Joachim
full_name: Brand, Joachim
last_name: Brand
- first_name: Hans-Werner
full_name: Hammer, Hans-Werner
last_name: Hammer
- first_name: Artem
full_name: Volosniev, Artem
id: 37D278BC-F248-11E8-B48F-1D18A9856A87
last_name: Volosniev
orcid: 0000-0003-0393-5525
citation:
ama: Rammelmüller L, Huber D, Čufar M, Brand J, Hammer H-W, Volosniev A. Magnetic
impurity in a one-dimensional few-fermion system. SciPost Physics. 2023;14(1).
doi:10.21468/scipostphys.14.1.006
apa: Rammelmüller, L., Huber, D., Čufar, M., Brand, J., Hammer, H.-W., & Volosniev,
A. (2023). Magnetic impurity in a one-dimensional few-fermion system. SciPost
Physics. SciPost Foundation. https://doi.org/10.21468/scipostphys.14.1.006
chicago: Rammelmüller, Lukas, David Huber, Matija Čufar, Joachim Brand, Hans-Werner
Hammer, and Artem Volosniev. “Magnetic Impurity in a One-Dimensional Few-Fermion
System.” SciPost Physics. SciPost Foundation, 2023. https://doi.org/10.21468/scipostphys.14.1.006.
ieee: L. Rammelmüller, D. Huber, M. Čufar, J. Brand, H.-W. Hammer, and A. Volosniev,
“Magnetic impurity in a one-dimensional few-fermion system,” SciPost Physics,
vol. 14, no. 1. SciPost Foundation, 2023.
ista: Rammelmüller L, Huber D, Čufar M, Brand J, Hammer H-W, Volosniev A. 2023.
Magnetic impurity in a one-dimensional few-fermion system. SciPost Physics. 14(1),
006.
mla: Rammelmüller, Lukas, et al. “Magnetic Impurity in a One-Dimensional Few-Fermion
System.” SciPost Physics, vol. 14, no. 1, 006, SciPost Foundation, 2023,
doi:10.21468/scipostphys.14.1.006.
short: L. Rammelmüller, D. Huber, M. Čufar, J. Brand, H.-W. Hammer, A. Volosniev,
SciPost Physics 14 (2023).
date_created: 2023-07-24T10:48:23Z
date_published: 2023-01-24T00:00:00Z
date_updated: 2023-12-13T11:39:32Z
day: '24'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.21468/scipostphys.14.1.006
external_id:
arxiv:
- '2204.01606'
isi:
- '001000325800008'
file:
- access_level: open_access
checksum: ffdb70b9ae7aa45ea4ea6096ecbd6431
content_type: application/pdf
creator: dernst
date_created: 2023-07-31T08:44:38Z
date_updated: 2023-07-31T08:44:38Z
file_id: '13328'
file_name: 2023_SciPostPhysics_Rammelmueller.pdf
file_size: 1163444
relation: main_file
success: 1
file_date_updated: 2023-07-31T08:44:38Z
has_accepted_license: '1'
intvolume: ' 14'
isi: 1
issue: '1'
keyword:
- General Physics and Astronomy
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
publication: SciPost Physics
publication_identifier:
issn:
- 2542-4653
publication_status: published
publisher: SciPost Foundation
quality_controlled: '1'
scopus_import: '1'
status: public
title: Magnetic impurity in a one-dimensional few-fermion system
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: '13274'
abstract:
- lang: eng
text: Viscous flows through pipes and channels are steady and ordered until, with
increasing velocity, the laminar motion catastrophically breaks down and gives
way to turbulence. How this apparently discontinuous change from low- to high-dimensional
motion can be rationalized within the framework of the Navier-Stokes equations
is not well understood. Exploiting geometrical properties of transitional channel
flow we trace turbulence to far lower Reynolds numbers (Re) than previously possible
and identify the complete path that reversibly links fully turbulent motion to
an invariant solution. This precursor of turbulence destabilizes rapidly with
Re, and the accompanying explosive increase in attractor dimension effectively
marks the transition between deterministic and de facto stochastic dynamics.
acknowledgement: We thank Baofang Song as well as the developers of Channelflow for
sharing their numerical codes, and Mukund Vasudevan and Holger Kantz for fruitful
discussions. This work was supported by a grant from the Simons Foundation (662960,
B. H.).
article_number: '034002'
article_processing_charge: No
article_type: original
author:
- first_name: Chaitanya S
full_name: Paranjape, Chaitanya S
id: 3D85B7C4-F248-11E8-B48F-1D18A9856A87
last_name: Paranjape
- first_name: Gökhan
full_name: Yalniz, Gökhan
id: 66E74FA2-D8BF-11E9-8249-8DE2E5697425
last_name: Yalniz
orcid: 0000-0002-8490-9312
- first_name: Yohann
full_name: Duguet, Yohann
last_name: Duguet
- first_name: Nazmi B
full_name: Budanur, Nazmi B
id: 3EA1010E-F248-11E8-B48F-1D18A9856A87
last_name: Budanur
orcid: 0000-0003-0423-5010
- first_name: Björn
full_name: Hof, Björn
id: 3A374330-F248-11E8-B48F-1D18A9856A87
last_name: Hof
orcid: 0000-0003-2057-2754
citation:
ama: Paranjape CS, Yalniz G, Duguet Y, Budanur NB, Hof B. Direct path from turbulence
to time-periodic solutions. Physical Review Letters. 2023;131(3). doi:10.1103/physrevlett.131.034002
apa: Paranjape, C. S., Yalniz, G., Duguet, Y., Budanur, N. B., & Hof, B. (2023).
Direct path from turbulence to time-periodic solutions. Physical Review Letters.
American Physical Society. https://doi.org/10.1103/physrevlett.131.034002
chicago: Paranjape, Chaitanya S, Gökhan Yalniz, Yohann Duguet, Nazmi B Budanur,
and Björn Hof. “Direct Path from Turbulence to Time-Periodic Solutions.” Physical
Review Letters. American Physical Society, 2023. https://doi.org/10.1103/physrevlett.131.034002.
ieee: C. S. Paranjape, G. Yalniz, Y. Duguet, N. B. Budanur, and B. Hof, “Direct
path from turbulence to time-periodic solutions,” Physical Review Letters,
vol. 131, no. 3. American Physical Society, 2023.
ista: Paranjape CS, Yalniz G, Duguet Y, Budanur NB, Hof B. 2023. Direct path from
turbulence to time-periodic solutions. Physical Review Letters. 131(3), 034002.
mla: Paranjape, Chaitanya S., et al. “Direct Path from Turbulence to Time-Periodic
Solutions.” Physical Review Letters, vol. 131, no. 3, 034002, American
Physical Society, 2023, doi:10.1103/physrevlett.131.034002.
short: C.S. Paranjape, G. Yalniz, Y. Duguet, N.B. Budanur, B. Hof, Physical Review
Letters 131 (2023).
date_created: 2023-07-24T09:43:59Z
date_published: 2023-07-21T00:00:00Z
date_updated: 2023-12-13T11:40:19Z
day: '21'
department:
- _id: GradSch
- _id: BjHo
doi: 10.1103/physrevlett.131.034002
external_id:
arxiv:
- '2306.05098'
isi:
- '001052929900004'
intvolume: ' 131'
isi: 1
issue: '3'
keyword:
- General Physics and Astronomy
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2306.05098
month: '07'
oa: 1
oa_version: Preprint
project:
- _id: 238598C6-32DE-11EA-91FC-C7463DDC885E
grant_number: '662960'
name: 'Revisiting the Turbulence Problem Using Statistical Mechanics: Experimental
Studies on Transitional and Turbulent Flows'
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: Direct path from turbulence to time-periodic solutions
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 131
year: '2023'
...
---
_id: '13261'
abstract:
- lang: eng
text: Chromosomes in the eukaryotic nucleus are highly compacted. However, for many
functional processes, including transcription initiation, the pairwise motion
of distal chromosomal elements such as enhancers and promoters is essential and
necessitates dynamic fluidity. Here, we used a live-imaging assay to simultaneously
measure the positions of pairs of enhancers and promoters and their transcriptional
output while systematically varying the genomic separation between these two DNA
loci. Our analysis reveals the coexistence of a compact globular organization
and fast subdiffusive dynamics. These combined features cause an anomalous scaling
of polymer relaxation times with genomic separation leading to long-ranged correlations.
Thus, encounter times of DNA loci are much less dependent on genomic distance
than predicted by existing polymer models, with potential consequences for eukaryotic
gene expression.
acknowledgement: This work was supported in part by the U.S. National Science Foundation,
the Center for the Physics of Biological Function (grant PHY-1734030), and the National
Institutes of Health (grants R01GM097275, U01DA047730, and U01DK127429). D.B.B.
was supported by the NOMIS Foundation as a fellow and by an EMBO postdoctoral fellowship
(ALTF 343-2022). H.C. was supported by a Charles H. Revson Biomedical Science Fellowship.
article_processing_charge: No
article_type: original
author:
- first_name: David
full_name: Brückner, David
id: e1e86031-6537-11eb-953a-f7ab92be508d
last_name: Brückner
orcid: 0000-0001-7205-2975
- first_name: Hongtao
full_name: Chen, Hongtao
last_name: Chen
- first_name: Lev
full_name: Barinov, Lev
last_name: Barinov
- first_name: Benjamin
full_name: Zoller, Benjamin
last_name: Zoller
- first_name: Thomas
full_name: Gregor, Thomas
last_name: Gregor
citation:
ama: Brückner D, Chen H, Barinov L, Zoller B, Gregor T. Stochastic motion and transcriptional
dynamics of pairs of distal DNA loci on a compacted chromosome. Science.
2023;380(6652):1357-1362. doi:10.1126/science.adf5568
apa: Brückner, D., Chen, H., Barinov, L., Zoller, B., & Gregor, T. (2023). Stochastic
motion and transcriptional dynamics of pairs of distal DNA loci on a compacted
chromosome. Science. American Association for the Advancement of Science.
https://doi.org/10.1126/science.adf5568
chicago: Brückner, David, Hongtao Chen, Lev Barinov, Benjamin Zoller, and Thomas
Gregor. “Stochastic Motion and Transcriptional Dynamics of Pairs of Distal DNA
Loci on a Compacted Chromosome.” Science. American Association for the
Advancement of Science, 2023. https://doi.org/10.1126/science.adf5568.
ieee: D. Brückner, H. Chen, L. Barinov, B. Zoller, and T. Gregor, “Stochastic motion
and transcriptional dynamics of pairs of distal DNA loci on a compacted chromosome,”
Science, vol. 380, no. 6652. American Association for the Advancement of
Science, pp. 1357–1362, 2023.
ista: Brückner D, Chen H, Barinov L, Zoller B, Gregor T. 2023. Stochastic motion
and transcriptional dynamics of pairs of distal DNA loci on a compacted chromosome.
Science. 380(6652), 1357–1362.
mla: Brückner, David, et al. “Stochastic Motion and Transcriptional Dynamics of
Pairs of Distal DNA Loci on a Compacted Chromosome.” Science, vol. 380,
no. 6652, American Association for the Advancement of Science, 2023, pp. 1357–62,
doi:10.1126/science.adf5568.
short: D. Brückner, H. Chen, L. Barinov, B. Zoller, T. Gregor, Science 380 (2023)
1357–1362.
date_created: 2023-07-23T22:01:12Z
date_published: 2023-06-29T00:00:00Z
date_updated: 2023-12-13T11:41:07Z
day: '29'
department:
- _id: EdHa
doi: 10.1126/science.adf5568
external_id:
isi:
- '001106405600028'
intvolume: ' 380'
isi: 1
issue: '6652'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1126/science.adf5568
month: '06'
oa: 1
oa_version: Preprint
page: 1357-1362
project:
- _id: 34e2a5b5-11ca-11ed-8bc3-b2265616ef0b
grant_number: 343-2022
name: A mechano-chemical theory for stem cell fate decisions in organoid development
publication: Science
publication_identifier:
eissn:
- 1095-9203
publication_status: published
publisher: American Association for the Advancement of Science
quality_controlled: '1'
scopus_import: '1'
status: public
title: Stochastic motion and transcriptional dynamics of pairs of distal DNA loci
on a compacted chromosome
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 380
year: '2023'
...
---
_id: '13336'
article_processing_charge: No
author:
- first_name: Maria
full_name: Kleshnina, Maria
id: 4E21749C-F248-11E8-B48F-1D18A9856A87
last_name: Kleshnina
citation:
ama: 'Kleshnina M. kleshnina/stochgames_info: The effect of environmental information
on evolution of cooperation in stochastic games. 2023. doi:10.5281/ZENODO.8059564'
apa: 'Kleshnina, M. (2023). kleshnina/stochgames_info: The effect of environmental
information on evolution of cooperation in stochastic games. Zenodo. https://doi.org/10.5281/ZENODO.8059564'
chicago: 'Kleshnina, Maria. “Kleshnina/Stochgames_info: The Effect of Environmental
Information on Evolution of Cooperation in Stochastic Games.” Zenodo, 2023. https://doi.org/10.5281/ZENODO.8059564.'
ieee: 'M. Kleshnina, “kleshnina/stochgames_info: The effect of environmental information
on evolution of cooperation in stochastic games.” Zenodo, 2023.'
ista: 'Kleshnina M. 2023. kleshnina/stochgames_info: The effect of environmental
information on evolution of cooperation in stochastic games, Zenodo, 10.5281/ZENODO.8059564.'
mla: 'Kleshnina, Maria. Kleshnina/Stochgames_info: The Effect of Environmental
Information on Evolution of Cooperation in Stochastic Games. Zenodo, 2023,
doi:10.5281/ZENODO.8059564.'
short: M. Kleshnina, (2023).
date_created: 2023-07-31T11:30:46Z
date_published: 2023-06-20T00:00:00Z
date_updated: 2023-12-13T11:42:37Z
day: '20'
ddc:
- '000'
department:
- _id: KrCh
doi: 10.5281/ZENODO.8059564
main_file_link:
- open_access: '1'
url: https://doi.org/10.5281/zenodo.8059564
month: '06'
oa: 1
oa_version: Published Version
publisher: Zenodo
related_material:
record:
- id: '13258'
relation: used_in_publication
status: public
status: public
title: 'kleshnina/stochgames_info: The effect of environmental information on evolution
of cooperation in stochastic games'
type: research_data_reference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2023'
...
---
_id: '13443'
abstract:
- lang: eng
text: 'The ages of solar-like stars have been at the center of many studies such
as exoplanet characterization or Galactic-archeology. While ages are usually computed
from stellar evolution models, relations linking ages to other stellar properties,
such as rotation and magnetic activity, have been investigated. With the large
catalog of 55,232 rotation periods, Prot, and photometric magnetic activity index,
Sph from Kepler data, we have the opportunity to look for such magneto-gyro-chronology
relations. Stellar ages are obtained with two stellar evolution codes that include
treatment of angular momentum evolution, hence using Prot as input in addition
to classical atmospheric parameters. We explore two different ways of predicting
stellar ages on three subsamples with spectroscopic observations: solar analogs,
late-F and G dwarfs, and K dwarfs. We first perform a Bayesian analysis to derive
relations between Sph and ages between 1 and 5 Gyr, and other stellar properties.
For late-F and G dwarfs, and K dwarfs, the multivariate regression favors the
model with Prot and Sph with median differences of 0.1% and 0.2%, respectively.
We also apply Machine Learning techniques with a Random Forest algorithm to predict
ages up to 14 Gyr with the same set of input parameters. For late-F, G and K dwarfs
together, predicted ages are on average within 5.3% of the model ages and improve
to 3.1% when including Prot. These are very promising results for a quick age
estimation for solar-like stars with photometric observations, especially with
current and future space missions.'
acknowledgement: 'This paper includes data collected by the Kepler mission and obtained
from the MAST data archive at the Space Telescope Science Institute (STScI). Funding
for the Kepler mission is provided by the NASA Science Mission Directorate. STScI
is operated by the Association of Universities for Research in Astronomy, Inc.,
under NASA contract NAS 5–26555. We acknowledge that this research was supported
in part by the National Science Foundation under grant No. NSF PHY-1748958. S.M.
acknowledges support from the Spanish Ministry of Science and Innovation (MICINN)
with the Ramón y Cajal fellowship No. RYC-2015-17697, the grant No. PID2019-107061GB-C66,
and through AEI under the Severo Ochoa Centres of Excellence Programme 2020–2023
(CEX2019-000920-S). S.M. and D.G.R. acknowledge support from the Spanish Ministry
of Science and Innovation (MICINN) with the grant No. PID2019-107187GB-I00. Z.R.C.
acknowledges support from National Aeronautics and Space Administration via the
TESS Guest Investigator Program (grant No. 80NSSC18K18584). The work presented here
was partially supported by the NASA grant NNX17AF27G. A.R.G.S. acknowledges the
support by FCT through national funds and by FEDER through COMPETE2020 by the following
grants: UIDB/04434/2020 and UIDP/04434/2020. A.R.G.S. is supported by FCT through
the work contract No. 2020.02480.CEECIND/CP1631/CT0001. R.A.G., L.A., and S.N.B.
acknowledge the support from PLATO and GOLF CNES grants. S.N.B. acknowledges support
from PLATO ASI-INAF agreement No. 2015-019-R.1-2018.'
article_number: '131'
article_processing_charge: Yes
article_type: original
author:
- first_name: Savita
full_name: Mathur, Savita
last_name: Mathur
- first_name: Zachary R.
full_name: Claytor, Zachary R.
last_name: Claytor
- first_name: Ângela R. G.
full_name: Santos, Ângela R. G.
last_name: Santos
- first_name: Rafael A.
full_name: García, Rafael A.
last_name: García
- first_name: Louis
full_name: Amard, Louis
last_name: Amard
- first_name: Lisa Annabelle
full_name: Bugnet, Lisa Annabelle
id: d9edb345-f866-11ec-9b37-d119b5234501
last_name: Bugnet
orcid: 0000-0003-0142-4000
- first_name: Enrico
full_name: Corsaro, Enrico
last_name: Corsaro
- first_name: Alfio
full_name: Bonanno, Alfio
last_name: Bonanno
- first_name: Sylvain N.
full_name: Breton, Sylvain N.
last_name: Breton
- first_name: Diego
full_name: Godoy-Rivera, Diego
last_name: Godoy-Rivera
- first_name: Marc H.
full_name: Pinsonneault, Marc H.
last_name: Pinsonneault
- first_name: Jennifer
full_name: van Saders, Jennifer
last_name: van Saders
citation:
ama: Mathur S, Claytor ZR, Santos ÂRG, et al. Magnetic activity evolution of solar-like
stars. I. Sph–age relation derived from Kepler observations. The Astrophysical
Journal. 2023;952(2). doi:10.3847/1538-4357/acd118
apa: Mathur, S., Claytor, Z. R., Santos, Â. R. G., García, R. A., Amard, L., Bugnet,
L. A., … van Saders, J. (2023). Magnetic activity evolution of solar-like stars.
I. Sph–age relation derived from Kepler observations. The Astrophysical Journal.
American Astronomical Society. https://doi.org/10.3847/1538-4357/acd118
chicago: Mathur, Savita, Zachary R. Claytor, Ângela R. G. Santos, Rafael A. García,
Louis Amard, Lisa Annabelle Bugnet, Enrico Corsaro, et al. “Magnetic Activity
Evolution of Solar-like Stars. I. Sph–Age Relation Derived from Kepler Observations.”
The Astrophysical Journal. American Astronomical Society, 2023. https://doi.org/10.3847/1538-4357/acd118.
ieee: S. Mathur et al., “Magnetic activity evolution of solar-like stars.
I. Sph–age relation derived from Kepler observations,” The Astrophysical Journal,
vol. 952, no. 2. American Astronomical Society, 2023.
ista: Mathur S, Claytor ZR, Santos ÂRG, García RA, Amard L, Bugnet LA, Corsaro E,
Bonanno A, Breton SN, Godoy-Rivera D, Pinsonneault MH, van Saders J. 2023. Magnetic
activity evolution of solar-like stars. I. Sph–age relation derived from Kepler
observations. The Astrophysical Journal. 952(2), 131.
mla: Mathur, Savita, et al. “Magnetic Activity Evolution of Solar-like Stars. I.
Sph–Age Relation Derived from Kepler Observations.” The Astrophysical Journal,
vol. 952, no. 2, 131, American Astronomical Society, 2023, doi:10.3847/1538-4357/acd118.
short: S. Mathur, Z.R. Claytor, Â.R.G. Santos, R.A. García, L. Amard, L.A. Bugnet,
E. Corsaro, A. Bonanno, S.N. Breton, D. Godoy-Rivera, M.H. Pinsonneault, J. van
Saders, The Astrophysical Journal 952 (2023).
date_created: 2023-08-01T14:19:16Z
date_published: 2023-08-01T00:00:00Z
date_updated: 2023-12-13T12:00:15Z
day: '01'
ddc:
- '520'
department:
- _id: LiBu
doi: 10.3847/1538-4357/acd118
external_id:
isi:
- '001034185700001'
file:
- access_level: open_access
checksum: f12452834d7ed6748dbf5ace18af4723
content_type: application/pdf
creator: dernst
date_created: 2023-08-02T07:42:26Z
date_updated: 2023-08-02T07:42:26Z
file_id: '13448'
file_name: 2023_AstrophysicalJour_Mathur.pdf
file_size: 4192386
relation: main_file
success: 1
file_date_updated: 2023-08-02T07:42:26Z
has_accepted_license: '1'
intvolume: ' 952'
isi: 1
issue: '2'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
publication: The Astrophysical Journal
publication_identifier:
eissn:
- 1538-4357
issn:
- 0004-637X
publication_status: published
publisher: American Astronomical Society
quality_controlled: '1'
status: public
title: Magnetic activity evolution of solar-like stars. I. Sph–age relation derived
from Kepler observations
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: 952
year: '2023'
...