---
_id: '14845'
abstract:
- lang: eng
text: We study a linear rotor in a bosonic bath within the angulon formalism. Our
focus is on systems where isotropic or anisotropic impurity-boson interactions
support a shallow bound state. To study the fate of the angulon in the vicinity
of bound-state formation, we formulate a beyond-linear-coupling angulon Hamiltonian.
First, we use it to study attractive, spherically symmetric impurity-boson interactions
for which the linear rotor can be mapped onto a static impurity. The well-known
polaron formalism provides an adequate description in this limit. Second, we consider
anisotropic potentials, and show that the presence of a shallow bound state with
pronounced anisotropic character leads to a many-body instability that washes
out the angulon dynamics.
acknowledgement: "We would like to thank G. Bighin, I. Cherepanov, E. Paerschke, and
E. Yakaboylu for insightful discussions on a wide range of topics. This work has
been supported by the European Research Council (ERC) Starting Grant No. 801770
(ANGULON). A.G. and A.G.V. acknowledge support from the European Union’s Horizon
2020 research and innovation\r\nprogram under the Marie Skłodowska-Curie Grant Agreement
No. 754411. Numerical calculations were performed on the Euler cluster managed by
the HPC team at ETH Zurich.\r\nR.S. acknowledges support by the Deutsche Forschungsgemeinschaft
under Germany’s Excellence Strategy Grant No. EXC 2181/1-390900948 (the Heidelberg
STRUCTURES Excellence Cluster). T.D. acknowledges support from the Isaac Newton
Studentship and the Science and Technology Facilities Council under Grant No. ST/V50659X/1."
article_number: '014102'
article_processing_charge: No
article_type: original
author:
- first_name: Tibor
full_name: Dome, Tibor
id: 7e3293e2-b9dc-11ee-97a9-cd73400f6994
last_name: Dome
orcid: 0000-0003-2586-3702
- first_name: Artem
full_name: Volosniev, Artem
id: 37D278BC-F248-11E8-B48F-1D18A9856A87
last_name: Volosniev
orcid: 0000-0003-0393-5525
- first_name: Areg
full_name: Ghazaryan, Areg
id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
last_name: Ghazaryan
orcid: 0000-0001-9666-3543
- first_name: Laleh
full_name: Safari, Laleh
id: 3C325E5E-F248-11E8-B48F-1D18A9856A87
last_name: Safari
- first_name: Richard
full_name: Schmidt, Richard
last_name: Schmidt
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
citation:
ama: Dome T, Volosniev A, Ghazaryan A, Safari L, Schmidt R, Lemeshko M. Linear rotor
in an ideal Bose gas near the threshold for binding. Physical Review B.
2024;109(1). doi:10.1103/PhysRevB.109.014102
apa: Dome, T., Volosniev, A., Ghazaryan, A., Safari, L., Schmidt, R., & Lemeshko,
M. (2024). Linear rotor in an ideal Bose gas near the threshold for binding. Physical
Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.109.014102
chicago: Dome, Tibor, Artem Volosniev, Areg Ghazaryan, Laleh Safari, Richard Schmidt,
and Mikhail Lemeshko. “Linear Rotor in an Ideal Bose Gas near the Threshold for
Binding.” Physical Review B. American Physical Society, 2024. https://doi.org/10.1103/PhysRevB.109.014102.
ieee: T. Dome, A. Volosniev, A. Ghazaryan, L. Safari, R. Schmidt, and M. Lemeshko,
“Linear rotor in an ideal Bose gas near the threshold for binding,” Physical
Review B, vol. 109, no. 1. American Physical Society, 2024.
ista: Dome T, Volosniev A, Ghazaryan A, Safari L, Schmidt R, Lemeshko M. 2024. Linear
rotor in an ideal Bose gas near the threshold for binding. Physical Review B.
109(1), 014102.
mla: Dome, Tibor, et al. “Linear Rotor in an Ideal Bose Gas near the Threshold for
Binding.” Physical Review B, vol. 109, no. 1, 014102, American Physical
Society, 2024, doi:10.1103/PhysRevB.109.014102.
short: T. Dome, A. Volosniev, A. Ghazaryan, L. Safari, R. Schmidt, M. Lemeshko,
Physical Review B 109 (2024).
date_created: 2024-01-21T23:00:57Z
date_published: 2024-01-01T00:00:00Z
date_updated: 2024-01-23T10:51:09Z
day: '01'
department:
- _id: MiLe
doi: 10.1103/PhysRevB.109.014102
ec_funded: 1
intvolume: ' 109'
issue: '1'
language:
- iso: eng
month: '01'
oa_version: None
project:
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '801770'
name: 'Angulon: physics and applications of a new quasiparticle'
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Linear rotor in an ideal Bose gas near the threshold for binding
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 109
year: '2024'
...
---
_id: '14851'
abstract:
- lang: ger
text: Die Quantenrotation ist ein spannendes Phänomen, das in vielen verschiedenen
Systemen auftritt, von Molekülen und Atomen bis hin zu subatomaren Teilchen wie
Neutronen und Protonen. Durch den Einsatz von starken Laserpulsen ist es möglich,
die mathematisch anspruchsvolle Topologie der Rotation von Molekülen aufzudecken
und topologisch geschützte Zustände zu erzeugen, die unerwartetes Verhalten zeigen.
Diese Entdeckungen könnten Auswirkungen auf die Molekülphysik und physikalische
Chemie haben und die Entwicklung neuer Technologien ermöglichen. Die Verbindung
von Quantenrotation und Topologie stellt ein aufregendes, interdisziplinäres Forschungsfeld
dar und bietet neue Wege zur Kontrolle und Nutzung von quantenmechanischen Phänomenen.
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Volker
full_name: Karle, Volker
id: D7C012AE-D7ED-11E9-95E8-1EC5E5697425
last_name: Karle
orcid: 0000-0002-6963-0129
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
citation:
ama: Karle V, Lemeshko M. Die faszinierende Topologie rotierender Quanten. Physik
in unserer Zeit. 2024;55(1):28-33. doi:10.1002/piuz.202301690
apa: Karle, V., & Lemeshko, M. (2024). Die faszinierende Topologie rotierender
Quanten. Physik in unserer Zeit. Wiley. https://doi.org/10.1002/piuz.202301690
chicago: Karle, Volker, and Mikhail Lemeshko. “Die faszinierende Topologie rotierender
Quanten.” Physik in unserer Zeit. Wiley, 2024. https://doi.org/10.1002/piuz.202301690.
ieee: V. Karle and M. Lemeshko, “Die faszinierende Topologie rotierender Quanten,”
Physik in unserer Zeit, vol. 55, no. 1. Wiley, pp. 28–33, 2024.
ista: Karle V, Lemeshko M. 2024. Die faszinierende Topologie rotierender Quanten.
Physik in unserer Zeit. 55(1), 28–33.
mla: Karle, Volker, and Mikhail Lemeshko. “Die faszinierende Topologie rotierender
Quanten.” Physik in unserer Zeit, vol. 55, no. 1, Wiley, 2024, pp. 28–33,
doi:10.1002/piuz.202301690.
short: V. Karle, M. Lemeshko, Physik in unserer Zeit 55 (2024) 28–33.
date_created: 2024-01-22T08:19:36Z
date_published: 2024-01-01T00:00:00Z
date_updated: 2024-02-15T14:29:04Z
day: '01'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1002/piuz.202301690
file:
- access_level: open_access
checksum: 3051dadcf9bc57da97e36b647c596ab1
content_type: application/pdf
creator: dernst
date_created: 2024-01-23T12:18:07Z
date_updated: 2024-01-23T12:18:07Z
file_id: '14878'
file_name: 2024_PhysikZeit_Karle.pdf
file_size: 1155244
relation: main_file
success: 1
file_date_updated: 2024-01-23T12:18:07Z
has_accepted_license: '1'
intvolume: ' 55'
issue: '1'
keyword:
- General Earth and Planetary Sciences
- General Environmental Science
language:
- iso: ger
month: '01'
oa: 1
oa_version: Published Version
page: 28-33
publication: Physik in unserer Zeit
publication_identifier:
eissn:
- 1521-3943
issn:
- 0031-9252
publication_status: published
publisher: Wiley
quality_controlled: '1'
status: public
title: Die faszinierende Topologie rotierender Quanten
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: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 55
year: '2024'
...
---
_id: '15004'
abstract:
- lang: eng
text: The impulsive limit (the “sudden approximation”) has been widely employed
to describe the interaction between molecules and short, far-off-resonant laser
pulses. This approximation assumes that the timescale of the laser-molecule interaction
is significantly shorter than the internal rotational period of the molecule,
resulting in the rotational motion being instantaneously “frozen” during the interaction.
This simplified description of the laser-molecule interaction is incorporated
in various theoretical models predicting rotational dynamics of molecules driven
by short laser pulses. In this theoretical work, we develop an effective theory
for ultrashort laser pulses by examining the full time-evolution operator and
solving the time-dependent Schrödinger equation at the operator level. Our findings
reveal a critical angular momentum, lcrit, at which the impulsive limit breaks
down. In other words, the validity of the sudden approximation depends not only
on the pulse duration but also on its intensity, since the latter determines how
many angular momentum states are populated. We explore both ultrashort multicycle
(Gaussian) pulses and the somewhat less studied half-cycle pulses, which produce
distinct effective potentials. We discuss the limitations of the impulsive limit
and propose a method that rescales the effective matrix elements, enabling an
improved and more accurate description of laser-molecule interactions.
acknowledgement: We thank Bretislav Friedrich, Marjan Mirahmadi, Artem Volosniev,
and Burkhard Schmidt for insightful discussions. M.L. acknowledges support by the
European Research Council (ERC) under Starting Grant No. 801770 (ANGULON).
article_number: '023101'
article_processing_charge: No
article_type: original
author:
- first_name: Volker
full_name: Karle, Volker
id: D7C012AE-D7ED-11E9-95E8-1EC5E5697425
last_name: Karle
orcid: 0000-0002-6963-0129
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
citation:
ama: 'Karle V, Lemeshko M. Modeling laser pulses as δ kicks: Reevaluating the impulsive
limit in molecular rotational dynamics. Physical Review A. 2024;109(2).
doi:10.1103/PhysRevA.109.023101'
apa: 'Karle, V., & Lemeshko, M. (2024). Modeling laser pulses as δ kicks: Reevaluating
the impulsive limit in molecular rotational dynamics. Physical Review A.
American Physical Society. https://doi.org/10.1103/PhysRevA.109.023101'
chicago: 'Karle, Volker, and Mikhail Lemeshko. “Modeling Laser Pulses as δ Kicks:
Reevaluating the Impulsive Limit in Molecular Rotational Dynamics.” Physical
Review A. American Physical Society, 2024. https://doi.org/10.1103/PhysRevA.109.023101.'
ieee: 'V. Karle and M. Lemeshko, “Modeling laser pulses as δ kicks: Reevaluating
the impulsive limit in molecular rotational dynamics,” Physical Review A,
vol. 109, no. 2. American Physical Society, 2024.'
ista: 'Karle V, Lemeshko M. 2024. Modeling laser pulses as δ kicks: Reevaluating
the impulsive limit in molecular rotational dynamics. Physical Review A. 109(2),
023101.'
mla: 'Karle, Volker, and Mikhail Lemeshko. “Modeling Laser Pulses as δ Kicks: Reevaluating
the Impulsive Limit in Molecular Rotational Dynamics.” Physical Review A,
vol. 109, no. 2, 023101, American Physical Society, 2024, doi:10.1103/PhysRevA.109.023101.'
short: V. Karle, M. Lemeshko, Physical Review A 109 (2024).
date_created: 2024-02-18T23:01:01Z
date_published: 2024-02-01T00:00:00Z
date_updated: 2024-02-26T09:45:20Z
day: '01'
department:
- _id: MiLe
doi: 10.1103/PhysRevA.109.023101
ec_funded: 1
external_id:
arxiv:
- '2307.07256'
intvolume: ' 109'
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2307.07256
month: '02'
oa: 1
oa_version: Preprint
project:
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '801770'
name: 'Angulon: physics and applications of a new quasiparticle'
publication: Physical Review A
publication_identifier:
eissn:
- 2469-9934
issn:
- 2469-9926
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Modeling laser pulses as δ kicks: Reevaluating the impulsive limit in molecular
rotational dynamics'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 109
year: '2024'
...
---
_id: '15045'
abstract:
- lang: eng
text: Coupling of orbital motion to a spin degree of freedom gives rise to various
transport phenomena in quantum systems that are beyond the standard paradigms
of classical physics. Here, we discuss features of spin-orbit dynamics that can
be visualized using a classical model with two coupled angular degrees of freedom.
Specifically, we demonstrate classical ‘spin’ filtering through our model and
show that the interplay between angular degrees of freedom and dissipation can
lead to asymmetric ‘spin’ transport.
acknowledgement: "We thank Mikhail Lemeshko and members of his group for many inspiring
discussions; Alberto Cappellaro for comments on the manuscript.\r\nOpen access funding
provided by Institute of Science and Technology (IST Austria)."
article_number: '12'
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Atul
full_name: Varshney, Atul
id: 2A2006B2-F248-11E8-B48F-1D18A9856A87
last_name: Varshney
orcid: 0000-0002-3072-5999
- first_name: Areg
full_name: Ghazaryan, Areg
id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
last_name: Ghazaryan
orcid: 0000-0001-9666-3543
- first_name: Artem
full_name: Volosniev, Artem
id: 37D278BC-F248-11E8-B48F-1D18A9856A87
last_name: Volosniev
orcid: 0000-0003-0393-5525
citation:
ama: Varshney A, Ghazaryan A, Volosniev A. Classical ‘spin’ filtering with two degrees
of freedom and dissipation. Few-Body Systems. 2024;65. doi:10.1007/s00601-024-01880-x
apa: Varshney, A., Ghazaryan, A., & Volosniev, A. (2024). Classical ‘spin’ filtering
with two degrees of freedom and dissipation. Few-Body Systems. Springer
Nature. https://doi.org/10.1007/s00601-024-01880-x
chicago: Varshney, Atul, Areg Ghazaryan, and Artem Volosniev. “Classical ‘Spin’
Filtering with Two Degrees of Freedom and Dissipation.” Few-Body Systems.
Springer Nature, 2024. https://doi.org/10.1007/s00601-024-01880-x.
ieee: A. Varshney, A. Ghazaryan, and A. Volosniev, “Classical ‘spin’ filtering with
two degrees of freedom and dissipation,” Few-Body Systems, vol. 65. Springer
Nature, 2024.
ista: Varshney A, Ghazaryan A, Volosniev A. 2024. Classical ‘spin’ filtering with
two degrees of freedom and dissipation. Few-Body Systems. 65, 12.
mla: Varshney, Atul, et al. “Classical ‘Spin’ Filtering with Two Degrees of Freedom
and Dissipation.” Few-Body Systems, vol. 65, 12, Springer Nature, 2024,
doi:10.1007/s00601-024-01880-x.
short: A. Varshney, A. Ghazaryan, A. Volosniev, Few-Body Systems 65 (2024).
date_created: 2024-03-01T11:39:33Z
date_published: 2024-02-17T00:00:00Z
date_updated: 2024-03-04T07:08:16Z
day: '17'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1007/s00601-024-01880-x
external_id:
arxiv:
- '2401.08454'
file:
- access_level: open_access
checksum: c4e08cc7bc756da69b1b36fda7bb92fb
content_type: application/pdf
creator: dernst
date_created: 2024-03-04T07:07:10Z
date_updated: 2024-03-04T07:07:10Z
file_id: '15049'
file_name: 2024_FewBodySys_Varshney.pdf
file_size: 436712
relation: main_file
success: 1
file_date_updated: 2024-03-04T07:07:10Z
has_accepted_license: '1'
intvolume: ' 65'
keyword:
- Atomic and Molecular Physics
- and Optics
language:
- iso: eng
month: '02'
oa: 1
oa_version: Published Version
publication: Few-Body Systems
publication_identifier:
issn:
- 1432-5411
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Classical ‘spin’ filtering with two degrees of freedom and dissipation
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: 65
year: '2024'
...
---
_id: '15053'
abstract:
- lang: eng
text: Atom-based quantum simulators have had many successes in tackling challenging
quantum many-body problems, owing to the precise and dynamical control that they
provide over the systems' parameters. They are, however, often optimized to address
a specific type of problem. Here, we present the design and implementation of
a 6Li-based quantum gas platform that provides wide-ranging capabilities and is
able to address a variety of quantum many-body problems. Our two-chamber architecture
relies on a robust combination of gray molasses and optical transport from a laser-cooling
chamber to a glass cell with excellent optical access. There, we first create
unitary Fermi superfluids in a three-dimensional axially symmetric harmonic trap
and characterize them using in situ thermometry, reaching temperatures below 20
nK. This allows us to enter the deep superfluid regime with samples of extreme
diluteness, where the interparticle spacing is sufficiently large for direct single-atom
imaging. Second, we generate optical lattice potentials with triangular and honeycomb
geometry in which we study diffraction of molecular Bose-Einstein condensates,
and show how going beyond the Kapitza-Dirac regime allows us to unambiguously
distinguish between the two geometries. With the ability to probe quantum many-body
physics in both discrete and continuous space, and its suitability for bulk and
single-atom imaging, our setup represents an important step towards achieving
a wide-scope quantum simulator.
acknowledgement: We thank Clara Bachorz, Darby Bates, Markus Bohlen, Valentin Crépel,
Yann Kiefer, Joanna Lis, Mihail Rabinovic, and Julian Struck for experimental assistance
in the early stages of this project, and Sebastian Will for a critical reading of
the manuscript. This work has been supported by Agence Nationale de la Recherche
(Grant No. ANR-21-CE30-0021), the European Research Council (Grant No. ERC-2016-ADG-743159),
CNRS (Tremplin@INP 2020), and Région Ile-de-France in the framework of DIM SIRTEQ
(Super2D and SISCo) and DIM QuanTiP.
article_number: '013158'
article_processing_charge: Yes
article_type: original
author:
- first_name: Shuwei
full_name: Jin, Shuwei
last_name: Jin
- first_name: Kunlun
full_name: Dai, Kunlun
last_name: Dai
- first_name: Joris
full_name: Verstraten, Joris
last_name: Verstraten
- first_name: Maxime
full_name: Dixmerias, Maxime
last_name: Dixmerias
- first_name: Ragheed
full_name: Al Hyder, Ragheed
id: d1c405be-ae15-11ed-8510-ccf53278162e
last_name: Al Hyder
- first_name: Christophe
full_name: Salomon, Christophe
last_name: Salomon
- first_name: Bruno
full_name: Peaudecerf, Bruno
last_name: Peaudecerf
- first_name: Tim
full_name: de Jongh, Tim
last_name: de Jongh
- first_name: Tarik
full_name: Yefsah, Tarik
last_name: Yefsah
citation:
ama: Jin S, Dai K, Verstraten J, et al. Multipurpose platform for analog quantum
simulation. Physical Review Research. 2024;6(1). doi:10.1103/physrevresearch.6.013158
apa: Jin, S., Dai, K., Verstraten, J., Dixmerias, M., Al Hyder, R., Salomon, C.,
… Yefsah, T. (2024). Multipurpose platform for analog quantum simulation. Physical
Review Research. American Physical Society. https://doi.org/10.1103/physrevresearch.6.013158
chicago: Jin, Shuwei, Kunlun Dai, Joris Verstraten, Maxime Dixmerias, Ragheed Al
Hyder, Christophe Salomon, Bruno Peaudecerf, Tim de Jongh, and Tarik Yefsah. “Multipurpose
Platform for Analog Quantum Simulation.” Physical Review Research. American
Physical Society, 2024. https://doi.org/10.1103/physrevresearch.6.013158.
ieee: S. Jin et al., “Multipurpose platform for analog quantum simulation,”
Physical Review Research, vol. 6, no. 1. American Physical Society, 2024.
ista: Jin S, Dai K, Verstraten J, Dixmerias M, Al Hyder R, Salomon C, Peaudecerf
B, de Jongh T, Yefsah T. 2024. Multipurpose platform for analog quantum simulation.
Physical Review Research. 6(1), 013158.
mla: Jin, Shuwei, et al. “Multipurpose Platform for Analog Quantum Simulation.”
Physical Review Research, vol. 6, no. 1, 013158, American Physical Society,
2024, doi:10.1103/physrevresearch.6.013158.
short: S. Jin, K. Dai, J. Verstraten, M. Dixmerias, R. Al Hyder, C. Salomon, B.
Peaudecerf, T. de Jongh, T. Yefsah, Physical Review Research 6 (2024).
date_created: 2024-03-04T07:42:52Z
date_published: 2024-02-13T00:00:00Z
date_updated: 2024-03-04T07:55:29Z
day: '13'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1103/physrevresearch.6.013158
external_id:
arxiv:
- '2304.08433'
file:
- access_level: open_access
checksum: ba2ae3e3a011f8897d3803c9366a67e2
content_type: application/pdf
creator: dernst
date_created: 2024-03-04T07:53:08Z
date_updated: 2024-03-04T07:53:08Z
file_id: '15054'
file_name: 2024_PhysicalReviewResearch_Jin.pdf
file_size: 4025988
relation: main_file
success: 1
file_date_updated: 2024-03-04T07:53:08Z
has_accepted_license: '1'
intvolume: ' 6'
issue: '1'
keyword:
- General Physics and Astronomy
language:
- iso: eng
month: '02'
oa: 1
oa_version: Published Version
publication: Physical Review Research
publication_identifier:
issn:
- 2643-1564
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Multipurpose platform for analog quantum simulation
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: 6
year: '2024'
...
---
_id: '15167'
abstract:
- lang: eng
text: We perform a diagrammatic analysis of the energy of a mobile impurity immersed
in a strongly interacting two-component Fermi gas to second order in the impurity-bath
interaction. These corrections demonstrate divergent behavior in the limit of
large impurity momentum. We show the fundamental processes responsible for these
logarithmically divergent terms. We study the problem in the general case without
any assumptions regarding the fermion-fermion interactions in the bath. We show
that the divergent term can be summed up to all orders in the Fermi-Fermi interaction
and that the resulting expression is equivalent to the one obtained in the few-body
calculation. Finally, we provide a perturbative calculation to the second order
in the Fermi-Fermi interaction, and we show the diagrams responsible for these
terms.
acknowledgement: We thank Félix Werner and Kris Van Houcke for interesting discussions.
article_number: '033315'
article_processing_charge: No
article_type: original
author:
- first_name: Ragheed
full_name: Al Hyder, Ragheed
id: d1c405be-ae15-11ed-8510-ccf53278162e
last_name: Al Hyder
- first_name: F.
full_name: Chevy, F.
last_name: Chevy
- first_name: X.
full_name: Leyronas, X.
last_name: Leyronas
citation:
ama: Al Hyder R, Chevy F, Leyronas X. Exploring beyond-mean-field logarithmic divergences
in Fermi-polaron energy. Physical Review A. 2024;109(3). doi:10.1103/PhysRevA.109.033315
apa: Al Hyder, R., Chevy, F., & Leyronas, X. (2024). Exploring beyond-mean-field
logarithmic divergences in Fermi-polaron energy. Physical Review A. American
Physical Society. https://doi.org/10.1103/PhysRevA.109.033315
chicago: Al Hyder, Ragheed, F. Chevy, and X. Leyronas. “Exploring Beyond-Mean-Field
Logarithmic Divergences in Fermi-Polaron Energy.” Physical Review A. American
Physical Society, 2024. https://doi.org/10.1103/PhysRevA.109.033315.
ieee: R. Al Hyder, F. Chevy, and X. Leyronas, “Exploring beyond-mean-field logarithmic
divergences in Fermi-polaron energy,” Physical Review A, vol. 109, no.
3. American Physical Society, 2024.
ista: Al Hyder R, Chevy F, Leyronas X. 2024. Exploring beyond-mean-field logarithmic
divergences in Fermi-polaron energy. Physical Review A. 109(3), 033315.
mla: Al Hyder, Ragheed, et al. “Exploring Beyond-Mean-Field Logarithmic Divergences
in Fermi-Polaron Energy.” Physical Review A, vol. 109, no. 3, 033315, American
Physical Society, 2024, doi:10.1103/PhysRevA.109.033315.
short: R. Al Hyder, F. Chevy, X. Leyronas, Physical Review A 109 (2024).
date_created: 2024-03-24T23:00:59Z
date_published: 2024-03-19T00:00:00Z
date_updated: 2024-03-25T07:36:55Z
day: '19'
department:
- _id: MiLe
doi: 10.1103/PhysRevA.109.033315
external_id:
arxiv:
- '2311.14536'
intvolume: ' 109'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2311.14536
month: '03'
oa: 1
oa_version: Preprint
publication: Physical Review A
publication_identifier:
eissn:
- 2469-9934
issn:
- 2469-9926
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Exploring beyond-mean-field logarithmic divergences in Fermi-polaron energy
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 109
year: '2024'
...
---
_id: '15181'
abstract:
- lang: eng
text: We demonstrate the failure of the adiabatic Born-Oppenheimer approximation
to describe the ground state of a quantum impurity within an ultracold Fermi gas
despite substantial mass differences between the bath and impurity species. Increasing
repulsion leads to the appearance of nonadiabatic couplings between the fast bath
and slow impurity degrees of freedom, which reduce the parity symmetry of the
latter according to the pseudo Jahn-Teller effect. The presence of this mechanism
is associated to a conical intersection involving the impurity position and the
inverse of the interaction strength, which acts as a synthetic dimension. We elucidate
the presence of these effects via a detailed ground-state analysis involving the
comparison of ab initio fully correlated simulations with effective models. Our
study suggests ultracold atomic ensembles as potent emulators of complex molecular
phenomena.
acknowledgement: "This work has been funded by the Cluster of Excellence “Advanced
Imaging of Matter” of the Deutsche Forschungsgemeinschaft (DFG) - EXC 2056 - Project
ID 390715994.\r\nG.M.K. gratefully acknowledges funding from the European Union’s
Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie
Grant Agreement No. 101034413."
article_number: '013257'
article_processing_charge: Yes
article_type: original
author:
- first_name: A.
full_name: Becker, A.
last_name: Becker
- first_name: Georgios
full_name: Koutentakis, Georgios
id: d7b23d3a-9e21-11ec-b482-f76739596b95
last_name: Koutentakis
- first_name: P.
full_name: Schmelcher, P.
last_name: Schmelcher
citation:
ama: Becker A, Koutentakis G, Schmelcher P. Synthetic dimension-induced pseudo Jahn-Teller
effect in one-dimensional confined fermions. Physical Review Research.
2024;6(1). doi:10.1103/physrevresearch.6.013257
apa: Becker, A., Koutentakis, G., & Schmelcher, P. (2024). Synthetic dimension-induced
pseudo Jahn-Teller effect in one-dimensional confined fermions. Physical Review
Research. American Physical Society. https://doi.org/10.1103/physrevresearch.6.013257
chicago: Becker, A., Georgios Koutentakis, and P. Schmelcher. “Synthetic Dimension-Induced
Pseudo Jahn-Teller Effect in One-Dimensional Confined Fermions.” Physical Review
Research. American Physical Society, 2024. https://doi.org/10.1103/physrevresearch.6.013257.
ieee: A. Becker, G. Koutentakis, and P. Schmelcher, “Synthetic dimension-induced
pseudo Jahn-Teller effect in one-dimensional confined fermions,” Physical Review
Research, vol. 6, no. 1. American Physical Society, 2024.
ista: Becker A, Koutentakis G, Schmelcher P. 2024. Synthetic dimension-induced pseudo
Jahn-Teller effect in one-dimensional confined fermions. Physical Review Research.
6(1), 013257.
mla: Becker, A., et al. “Synthetic Dimension-Induced Pseudo Jahn-Teller Effect in
One-Dimensional Confined Fermions.” Physical Review Research, vol. 6, no.
1, 013257, American Physical Society, 2024, doi:10.1103/physrevresearch.6.013257.
short: A. Becker, G. Koutentakis, P. Schmelcher, Physical Review Research 6 (2024).
date_created: 2024-03-25T08:57:07Z
date_published: 2024-03-01T00:00:00Z
date_updated: 2024-03-25T09:27:37Z
day: '01'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1103/physrevresearch.6.013257
ec_funded: 1
external_id:
arxiv:
- '2310.17995'
file:
- access_level: open_access
checksum: 4e0e58d1f58386fb016284c84db2a300
content_type: application/pdf
creator: dernst
date_created: 2024-03-25T09:24:55Z
date_updated: 2024-03-25T09:24:55Z
file_id: '15183'
file_name: 2024_PhysicalReviewResearch_Becker.pdf
file_size: 2207067
relation: main_file
success: 1
file_date_updated: 2024-03-25T09:24:55Z
has_accepted_license: '1'
intvolume: ' 6'
issue: '1'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
project:
- _id: fc2ed2f7-9c52-11eb-aca3-c01059dda49c
call_identifier: H2020
grant_number: '101034413'
name: 'IST-BRIDGE: International postdoctoral program'
publication: Physical Review Research
publication_identifier:
issn:
- 2643-1564
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Synthetic dimension-induced pseudo Jahn-Teller effect in one-dimensional confined
fermions
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: 6
year: '2024'
...
---
_id: '12534'
abstract:
- lang: eng
text: Brownian motion of a mobile impurity in a bath is affected by spin-orbit coupling
(SOC). Here, we discuss a Caldeira-Leggett-type model that can be used to propose
and interpret quantum simulators of this problem in cold Bose gases. First, we
derive a master equation that describes the model and explore it in a one-dimensional
(1D) setting. To validate the standard assumptions needed for our derivation,
we analyze available experimental data without SOC; as a byproduct, this analysis
suggests that the quench dynamics of the impurity is beyond the 1D Bose-polaron
approach at temperatures currently accessible in a cold-atom laboratory—motion
of the impurity is mainly driven by dissipation. For systems with SOC, we demonstrate
that 1D spin-orbit coupling can be gauged out even in the presence of dissipation—the
information about SOC is incorporated in the initial conditions. Observables sensitive
to this information (such as spin densities) can be used to study formation of
steady spin polarization domains during quench dynamics.
acknowledgement: "We thank Rafael Barfknecht for help at the initial stages of this
project; Fabian Brauneis for useful discussions; Miguel A. Garcia-March, Georgios
Koutentakis, and Simeon Mistakidis\r\nfor comments on the paper. M.L. acknowledges
support by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON)."
article_number: '013029'
article_processing_charge: No
article_type: original
author:
- first_name: Areg
full_name: Ghazaryan, Areg
id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
last_name: Ghazaryan
orcid: 0000-0001-9666-3543
- first_name: Alberto
full_name: Cappellaro, Alberto
id: 9d13b3cb-30a2-11eb-80dc-f772505e8660
last_name: Cappellaro
orcid: 0000-0001-6110-2359
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Artem
full_name: Volosniev, Artem
id: 37D278BC-F248-11E8-B48F-1D18A9856A87
last_name: Volosniev
orcid: 0000-0003-0393-5525
citation:
ama: Ghazaryan A, Cappellaro A, Lemeshko M, Volosniev A. Dissipative dynamics of
an impurity with spin-orbit coupling. Physical Review Research. 2023;5(1).
doi:10.1103/physrevresearch.5.013029
apa: Ghazaryan, A., Cappellaro, A., Lemeshko, M., & Volosniev, A. (2023). Dissipative
dynamics of an impurity with spin-orbit coupling. Physical Review Research.
American Physical Society. https://doi.org/10.1103/physrevresearch.5.013029
chicago: Ghazaryan, Areg, Alberto Cappellaro, Mikhail Lemeshko, and Artem Volosniev.
“Dissipative Dynamics of an Impurity with Spin-Orbit Coupling.” Physical Review
Research. American Physical Society, 2023. https://doi.org/10.1103/physrevresearch.5.013029.
ieee: A. Ghazaryan, A. Cappellaro, M. Lemeshko, and A. Volosniev, “Dissipative dynamics
of an impurity with spin-orbit coupling,” Physical Review Research, vol.
5, no. 1. American Physical Society, 2023.
ista: Ghazaryan A, Cappellaro A, Lemeshko M, Volosniev A. 2023. Dissipative dynamics
of an impurity with spin-orbit coupling. Physical Review Research. 5(1), 013029.
mla: Ghazaryan, Areg, et al. “Dissipative Dynamics of an Impurity with Spin-Orbit
Coupling.” Physical Review Research, vol. 5, no. 1, 013029, American Physical
Society, 2023, doi:10.1103/physrevresearch.5.013029.
short: A. Ghazaryan, A. Cappellaro, M. Lemeshko, A. Volosniev, Physical Review Research
5 (2023).
date_created: 2023-02-10T09:02:26Z
date_published: 2023-01-20T00:00:00Z
date_updated: 2023-02-20T07:02:00Z
day: '20'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1103/physrevresearch.5.013029
ec_funded: 1
file:
- access_level: open_access
checksum: 6068b62874c0099628a108bb9c5c6bd2
content_type: application/pdf
creator: dernst
date_created: 2023-02-13T10:38:10Z
date_updated: 2023-02-13T10:38:10Z
file_id: '12546'
file_name: 2023_PhysicalReviewResearch_Ghazaryan.pdf
file_size: 865150
relation: main_file
success: 1
file_date_updated: 2023-02-13T10:38:10Z
has_accepted_license: '1'
intvolume: ' 5'
issue: '1'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
project:
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '801770'
name: 'Angulon: physics and applications of a new quasiparticle'
publication: Physical Review Research
publication_identifier:
issn:
- 2643-1564
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Dissipative dynamics of an impurity with spin-orbit coupling
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: 5
year: '2023'
...
---
_id: '13251'
abstract:
- lang: eng
text: A rotating organic cation and a dynamically disordered soft inorganic cage
are the hallmark features of organic-inorganic lead-halide perovskites. Understanding
the interplay between these two subsystems is a challenging problem, but it is
this coupling that is widely conjectured to be responsible for the unique behavior
of photocarriers in these materials. In this work, we use the fact that the polarizability
of the organic cation strongly depends on the ambient electrostatic environment
to put the molecule forward as a sensitive probe of the local crystal fields inside
the lattice cell. We measure the average polarizability of the C/N–H bond stretching
mode by means of infrared spectroscopy, which allows us to deduce the character
of the motion of the cation molecule, find the magnitude of the local crystal
field, and place an estimate on the strength of the hydrogen bond between the
hydrogen and halide atoms. Our results pave the way for understanding electric
fields in lead-halide perovskites using infrared bond spectroscopy.
acknowledgement: "We thank Bingqing Cheng and Hong-Zhou Ye for valuable discussions;
Y.W.’s work at IST Austria was supported through ISTernship summer internship program
funded by OeADGmbH; D.L. and Z.A. acknowledge support by IST Austria (ISTA); M.L.
acknowledges support by the European Research Council (ERC) Starting Grant No. 801770
(ANGULON).\r\nA.A.Z. and O.M.B. acknowledge support by KAUST."
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Yujing
full_name: Wei, Yujing
id: 0c5ff007-2600-11ee-b896-98bd8d663294
last_name: Wei
orcid: 0000-0001-8913-9719
- first_name: Artem
full_name: Volosniev, Artem
id: 37D278BC-F248-11E8-B48F-1D18A9856A87
last_name: Volosniev
orcid: 0000-0003-0393-5525
- first_name: Dusan
full_name: Lorenc, Dusan
id: 40D8A3E6-F248-11E8-B48F-1D18A9856A87
last_name: Lorenc
- first_name: Ayan A.
full_name: Zhumekenov, Ayan A.
last_name: Zhumekenov
- first_name: Osman M.
full_name: Bakr, Osman M.
last_name: Bakr
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Zhanybek
full_name: Alpichshev, Zhanybek
id: 45E67A2A-F248-11E8-B48F-1D18A9856A87
last_name: Alpichshev
orcid: 0000-0002-7183-5203
citation:
ama: Wei Y, Volosniev A, Lorenc D, et al. Bond polarizability as a probe of local
crystal fields in hybrid lead-halide perovskites. The Journal of Physical Chemistry
Letters. 2023;14(27):6309-6314. doi:10.1021/acs.jpclett.3c01158
apa: Wei, Y., Volosniev, A., Lorenc, D., Zhumekenov, A. A., Bakr, O. M., Lemeshko,
M., & Alpichshev, Z. (2023). Bond polarizability as a probe of local crystal
fields in hybrid lead-halide perovskites. The Journal of Physical Chemistry
Letters. American Chemical Society. https://doi.org/10.1021/acs.jpclett.3c01158
chicago: Wei, Yujing, Artem Volosniev, Dusan Lorenc, Ayan A. Zhumekenov, Osman M.
Bakr, Mikhail Lemeshko, and Zhanybek Alpichshev. “Bond Polarizability as a Probe
of Local Crystal Fields in Hybrid Lead-Halide Perovskites.” The Journal of
Physical Chemistry Letters. American Chemical Society, 2023. https://doi.org/10.1021/acs.jpclett.3c01158.
ieee: Y. Wei et al., “Bond polarizability as a probe of local crystal fields
in hybrid lead-halide perovskites,” The Journal of Physical Chemistry Letters,
vol. 14, no. 27. American Chemical Society, pp. 6309–6314, 2023.
ista: Wei Y, Volosniev A, Lorenc D, Zhumekenov AA, Bakr OM, Lemeshko M, Alpichshev
Z. 2023. Bond polarizability as a probe of local crystal fields in hybrid lead-halide
perovskites. The Journal of Physical Chemistry Letters. 14(27), 6309–6314.
mla: Wei, Yujing, et al. “Bond Polarizability as a Probe of Local Crystal Fields
in Hybrid Lead-Halide Perovskites.” The Journal of Physical Chemistry Letters,
vol. 14, no. 27, American Chemical Society, 2023, pp. 6309–14, doi:10.1021/acs.jpclett.3c01158.
short: Y. Wei, A. Volosniev, D. Lorenc, A.A. Zhumekenov, O.M. Bakr, M. Lemeshko,
Z. Alpichshev, The Journal of Physical Chemistry Letters 14 (2023) 6309–6314.
date_created: 2023-07-18T11:13:17Z
date_published: 2023-07-05T00:00:00Z
date_updated: 2023-07-19T06:59:19Z
day: '05'
ddc:
- '530'
department:
- _id: MiLe
- _id: ZhAl
doi: 10.1021/acs.jpclett.3c01158
ec_funded: 1
external_id:
arxiv:
- '2304.14198'
isi:
- '001022811500001'
file:
- access_level: open_access
checksum: c0c040063f06a51b9c463adc504f1a23
content_type: application/pdf
creator: dernst
date_created: 2023-07-19T06:55:39Z
date_updated: 2023-07-19T06:55:39Z
file_id: '13253'
file_name: 2023_JourPhysChemistry_Wei.pdf
file_size: 2121252
relation: main_file
success: 1
file_date_updated: 2023-07-19T06:55:39Z
has_accepted_license: '1'
intvolume: ' 14'
isi: 1
issue: '27'
keyword:
- General Materials Science
- Physical and Theoretical Chemistry
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
page: 6309-6314
project:
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '801770'
name: 'Angulon: physics and applications of a new quasiparticle'
publication: The Journal of Physical Chemistry Letters
publication_identifier:
eissn:
- 1948-7185
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
status: public
title: Bond polarizability as a probe of local crystal fields in hybrid lead-halide
perovskites
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: '13276'
abstract:
- lang: eng
text: We introduce a generic and accessible implementation of an exact diagonalization
method for studying few-fermion models. Our aim is to provide a testbed for the
newcomers to the field as well as a stepping stone for trying out novel optimizations
and approximations. This userguide consists of a description of the algorithm,
and several examples in varying orders of sophistication. In particular, we exemplify
our routine using an effective-interaction approach that fixes the low-energy
physics. We benchmark this approach against the existing data, and show that it
is able to deliver state-of-the-art numerical results at a significantly reduced
computational cost.
acknowledgement: "We acknowledge fruitful discussions with Hans-Werner Hammer and
thank Gerhard Zürn and\r\nPietro Massignan for sending us their data. We thank Fabian
Brauneis for beta-testing the\r\nprovided code-package, and comments on the manuscript.\r\nL.R.
is supported by FP7/ERC Consolidator Grant QSIMCORR, No.\r\n771891, and the Deutsche
Forschungsgemeinschaft (DFG, German Research Foundation) under\r\nGermany’s Excellence
Strategy –EXC–2111–390814868. A.G.V. acknowledges support\r\nby European Union’s
Horizon 2020 research and innovation programme under the Marie\r\nSkłodowska-Curie
Grant Agreement No. 754411."
article_number: '12'
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: 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, Volosniev A. A modular implementation of an effective
interaction approach for harmonically trapped fermions in 1D. SciPost Physics
Codebases. 2023. doi:10.21468/scipostphyscodeb.12
apa: Rammelmüller, L., Huber, D., & Volosniev, A. (2023). A modular implementation
of an effective interaction approach for harmonically trapped fermions in 1D.
SciPost Physics Codebases. SciPost Foundation. https://doi.org/10.21468/scipostphyscodeb.12
chicago: Rammelmüller, Lukas, David Huber, and Artem Volosniev. “A Modular Implementation
of an Effective Interaction Approach for Harmonically Trapped Fermions in 1D.”
SciPost Physics Codebases. SciPost Foundation, 2023. https://doi.org/10.21468/scipostphyscodeb.12.
ieee: L. Rammelmüller, D. Huber, and A. Volosniev, “A modular implementation of
an effective interaction approach for harmonically trapped fermions in 1D,” SciPost
Physics Codebases. SciPost Foundation, 2023.
ista: Rammelmüller L, Huber D, Volosniev A. 2023. A modular implementation of an
effective interaction approach for harmonically trapped fermions in 1D. SciPost
Physics Codebases., 12.
mla: Rammelmüller, Lukas, et al. “A Modular Implementation of an Effective Interaction
Approach for Harmonically Trapped Fermions in 1D.” SciPost Physics Codebases,
12, SciPost Foundation, 2023, doi:10.21468/scipostphyscodeb.12.
short: L. Rammelmüller, D. Huber, A. Volosniev, SciPost Physics Codebases (2023).
date_created: 2023-07-24T10:47:15Z
date_published: 2023-04-19T00:00:00Z
date_updated: 2023-07-31T09:16:02Z
day: '19'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.21468/scipostphyscodeb.12
ec_funded: 1
external_id:
arxiv:
- '2202.04603'
file:
- access_level: open_access
checksum: f583a70fe915d2208c803f5afb426daa
content_type: application/pdf
creator: dernst
date_created: 2023-07-31T09:09:23Z
date_updated: 2023-07-31T09:09:23Z
file_id: '13330'
file_name: 2023_SciPostPhysCodebase_Rammelmueller.pdf
file_size: 551418
relation: main_file
success: 1
file_date_updated: 2023-07-31T09:09:23Z
has_accepted_license: '1'
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: SciPost Physics Codebases
publication_identifier:
issn:
- 2949-804X
publication_status: published
publisher: SciPost Foundation
quality_controlled: '1'
related_material:
record:
- id: '13275'
relation: research_data
status: public
status: public
title: A modular implementation of an effective interaction approach for harmonically
trapped fermions in 1D
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
year: '2023'
...
---
_id: '13275'
abstract:
- lang: eng
text: We introduce a generic and accessible implementation of an exact diagonalization
method for studying few-fermion models. Our aim is to provide a testbed for the
newcomers to the field as well as a stepping stone for trying out novel optimizations
and approximations. This userguide consists of a description of the algorithm,
and several examples in varying orders of sophistication. In particular, we exemplify
our routine using an effective-interaction approach that fixes the low-energy
physics. We benchmark this approach against the existing data, and show that it
is able to deliver state-of-the-art numerical results at a significantly reduced
computational cost.
article_processing_charge: No
author:
- first_name: Lukas
full_name: Rammelmüller, Lukas
last_name: Rammelmüller
- first_name: David
full_name: Huber, David
last_name: Huber
- 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, Volosniev A. Codebase release 1.0 for FermiFCI. 2023.
doi:10.21468/scipostphyscodeb.12-r1.0
apa: Rammelmüller, L., Huber, D., & Volosniev, A. (2023). Codebase release 1.0
for FermiFCI. SciPost Foundation. https://doi.org/10.21468/scipostphyscodeb.12-r1.0
chicago: Rammelmüller, Lukas, David Huber, and Artem Volosniev. “Codebase Release
1.0 for FermiFCI.” SciPost Foundation, 2023. https://doi.org/10.21468/scipostphyscodeb.12-r1.0.
ieee: L. Rammelmüller, D. Huber, and A. Volosniev, “Codebase release 1.0 for FermiFCI.”
SciPost Foundation, 2023.
ista: Rammelmüller L, Huber D, Volosniev A. 2023. Codebase release 1.0 for FermiFCI,
SciPost Foundation, 10.21468/scipostphyscodeb.12-r1.0.
mla: Rammelmüller, Lukas, et al. Codebase Release 1.0 for FermiFCI. SciPost
Foundation, 2023, doi:10.21468/scipostphyscodeb.12-r1.0.
short: L. Rammelmüller, D. Huber, A. Volosniev, (2023).
date_created: 2023-07-24T10:46:23Z
date_published: 2023-04-19T00:00:00Z
date_updated: 2023-07-31T09:16:02Z
day: '19'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.21468/scipostphyscodeb.12-r1.0
ec_funded: 1
main_file_link:
- open_access: '1'
url: https://doi.org/10.21468/SciPostPhysCodeb.12-r1.0
month: '04'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publisher: SciPost Foundation
related_material:
record:
- id: '13276'
relation: used_in_publication
status: public
status: public
title: Codebase release 1.0 for FermiFCI
type: research_data_reference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2023'
...
---
_id: '12723'
abstract:
- lang: eng
text: 'Lead halide perovskites enjoy a number of remarkable optoelectronic properties.
To explain their origin, it is necessary to study how electromagnetic fields interact
with these systems. We address this problem here by studying two classical quantities:
Faraday rotation and the complex refractive index in a paradigmatic perovskite
CH3NH3PbBr3 in a broad wavelength range. We find that the minimal coupling of
electromagnetic fields to the k⋅p Hamiltonian is insufficient to describe the
observed data even on the qualitative level. To amend this, we demonstrate that
there exists a relevant atomic-level coupling between electromagnetic fields and
the spin degree of freedom. This spin-electric coupling allows for quantitative
description of a number of previous as well as present experimental data. In particular,
we use it here to show that the Faraday effect in lead halide perovskites is dominated
by the Zeeman splitting of the energy levels and has a substantial beyond-Becquerel
contribution. Finally, we present general symmetry-based phenomenological arguments
that in the low-energy limit our effective model includes all basis coupling terms
to the electromagnetic field in the linear order.'
article_number: '106901'
article_processing_charge: No
article_type: original
author:
- first_name: Artem
full_name: Volosniev, Artem
id: 37D278BC-F248-11E8-B48F-1D18A9856A87
last_name: Volosniev
orcid: 0000-0003-0393-5525
- first_name: Abhishek
full_name: Shiva Kumar, Abhishek
id: 5e9a6931-eb97-11eb-a6c2-e96f7058d77a
last_name: Shiva Kumar
- first_name: Dusan
full_name: Lorenc, Dusan
id: 40D8A3E6-F248-11E8-B48F-1D18A9856A87
last_name: Lorenc
- first_name: Younes
full_name: Ashourishokri, Younes
id: e32c111f-f6e0-11ea-865d-eb955baea334
last_name: Ashourishokri
- first_name: Ayan A.
full_name: Zhumekenov, Ayan A.
last_name: Zhumekenov
- first_name: Osman M.
full_name: Bakr, Osman M.
last_name: Bakr
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Zhanybek
full_name: Alpichshev, Zhanybek
id: 45E67A2A-F248-11E8-B48F-1D18A9856A87
last_name: Alpichshev
orcid: 0000-0002-7183-5203
citation:
ama: Volosniev A, Shiva Kumar A, Lorenc D, et al. Spin-electric coupling in lead
halide perovskites. Physical Review Letters. 2023;130(10). doi:10.1103/physrevlett.130.106901
apa: Volosniev, A., Shiva Kumar, A., Lorenc, D., Ashourishokri, Y., Zhumekenov,
A. A., Bakr, O. M., … Alpichshev, Z. (2023). Spin-electric coupling in lead halide
perovskites. Physical Review Letters. American Physical Society. https://doi.org/10.1103/physrevlett.130.106901
chicago: Volosniev, Artem, Abhishek Shiva Kumar, Dusan Lorenc, Younes Ashourishokri,
Ayan A. Zhumekenov, Osman M. Bakr, Mikhail Lemeshko, and Zhanybek Alpichshev.
“Spin-Electric Coupling in Lead Halide Perovskites.” Physical Review Letters.
American Physical Society, 2023. https://doi.org/10.1103/physrevlett.130.106901.
ieee: A. Volosniev et al., “Spin-electric coupling in lead halide perovskites,”
Physical Review Letters, vol. 130, no. 10. American Physical Society, 2023.
ista: Volosniev A, Shiva Kumar A, Lorenc D, Ashourishokri Y, Zhumekenov AA, Bakr
OM, Lemeshko M, Alpichshev Z. 2023. Spin-electric coupling in lead halide perovskites.
Physical Review Letters. 130(10), 106901.
mla: Volosniev, Artem, et al. “Spin-Electric Coupling in Lead Halide Perovskites.”
Physical Review Letters, vol. 130, no. 10, 106901, American Physical Society,
2023, doi:10.1103/physrevlett.130.106901.
short: A. Volosniev, A. Shiva Kumar, D. Lorenc, Y. Ashourishokri, A.A. Zhumekenov,
O.M. Bakr, M. Lemeshko, Z. Alpichshev, Physical Review Letters 130 (2023).
date_created: 2023-03-14T13:11:59Z
date_published: 2023-03-10T00:00:00Z
date_updated: 2023-08-01T13:39:04Z
day: '10'
department:
- _id: GradSch
- _id: ZhAl
- _id: MiLe
doi: 10.1103/physrevlett.130.106901
external_id:
arxiv:
- '2203.09443'
isi:
- '000982435900002'
intvolume: ' 130'
isi: 1
issue: '10'
keyword:
- General Physics and Astronomy
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2203.09443
month: '03'
oa: 1
oa_version: Preprint
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Spin-electric coupling in lead halide perovskites
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 130
year: '2023'
...
---
_id: '12724'
abstract:
- lang: eng
text: 'We use general symmetry-based arguments to construct an effective model suitable
for studying optical properties of lead halide perovskites. To build the model,
we identify an atomic-level interaction between electromagnetic fields and the
spin degree of freedom that should be added to a minimally coupled k⋅p Hamiltonian.
As a first application, we study two basic optical characteristics of the material:
the Verdet constant and the refractive index. Beyond these linear characteristics
of the material, the model is suitable for calculating nonlinear effects such
as the third-order optical susceptibility. Analysis of this quantity shows that
the geometrical properties of the spin-electric term imply isotropic optical response
of the system, and that optical anisotropy of lead halide perovskites is a manifestation
of hopping of charge carriers. To illustrate this, we discuss third-harmonic generation.'
article_number: '125201'
article_processing_charge: No
article_type: original
author:
- first_name: Artem
full_name: Volosniev, Artem
id: 37D278BC-F248-11E8-B48F-1D18A9856A87
last_name: Volosniev
orcid: 0000-0003-0393-5525
- first_name: Abhishek
full_name: Shiva Kumar, Abhishek
id: 5e9a6931-eb97-11eb-a6c2-e96f7058d77a
last_name: Shiva Kumar
- first_name: Dusan
full_name: Lorenc, Dusan
id: 40D8A3E6-F248-11E8-B48F-1D18A9856A87
last_name: Lorenc
- first_name: Younes
full_name: Ashourishokri, Younes
id: e32c111f-f6e0-11ea-865d-eb955baea334
last_name: Ashourishokri
- first_name: Ayan
full_name: Zhumekenov, Ayan
last_name: Zhumekenov
- first_name: Osman M.
full_name: Bakr, Osman M.
last_name: Bakr
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Zhanybek
full_name: Alpichshev, Zhanybek
id: 45E67A2A-F248-11E8-B48F-1D18A9856A87
last_name: Alpichshev
orcid: 0000-0002-7183-5203
citation:
ama: Volosniev A, Shiva Kumar A, Lorenc D, et al. Effective model for studying optical
properties of lead halide perovskites. Physical Review B. 2023;107(12).
doi:10.1103/physrevb.107.125201
apa: Volosniev, A., Shiva Kumar, A., Lorenc, D., Ashourishokri, Y., Zhumekenov,
A., Bakr, O. M., … Alpichshev, Z. (2023). Effective model for studying optical
properties of lead halide perovskites. Physical Review B. American Physical
Society. https://doi.org/10.1103/physrevb.107.125201
chicago: Volosniev, Artem, Abhishek Shiva Kumar, Dusan Lorenc, Younes Ashourishokri,
Ayan Zhumekenov, Osman M. Bakr, Mikhail Lemeshko, and Zhanybek Alpichshev. “Effective
Model for Studying Optical Properties of Lead Halide Perovskites.” Physical
Review B. American Physical Society, 2023. https://doi.org/10.1103/physrevb.107.125201.
ieee: A. Volosniev et al., “Effective model for studying optical properties
of lead halide perovskites,” Physical Review B, vol. 107, no. 12. American
Physical Society, 2023.
ista: Volosniev A, Shiva Kumar A, Lorenc D, Ashourishokri Y, Zhumekenov A, Bakr
OM, Lemeshko M, Alpichshev Z. 2023. Effective model for studying optical properties
of lead halide perovskites. Physical Review B. 107(12), 125201.
mla: Volosniev, Artem, et al. “Effective Model for Studying Optical Properties of
Lead Halide Perovskites.” Physical Review B, vol. 107, no. 12, 125201,
American Physical Society, 2023, doi:10.1103/physrevb.107.125201.
short: A. Volosniev, A. Shiva Kumar, D. Lorenc, Y. Ashourishokri, A. Zhumekenov,
O.M. Bakr, M. Lemeshko, Z. Alpichshev, Physical Review B 107 (2023).
date_created: 2023-03-14T13:13:05Z
date_published: 2023-03-15T00:00:00Z
date_updated: 2023-08-01T13:39:47Z
day: '15'
department:
- _id: GradSch
- _id: ZhAl
- _id: MiLe
doi: 10.1103/physrevb.107.125201
external_id:
arxiv:
- '2204.04022'
isi:
- '000972602200006'
intvolume: ' 107'
isi: 1
issue: '12'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2204.04022
month: '03'
oa: 1
oa_version: Preprint
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Effective model for studying optical properties of lead halide perovskites
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 107
year: '2023'
...
---
_id: '12788'
abstract:
- lang: eng
text: We show that the simplest of existing molecules—closed-shell diatomics not
interacting with one another—host topological charges when driven by periodic
far-off-resonant laser pulses. A periodically kicked molecular rotor can be mapped
onto a “crystalline” lattice in angular momentum space. This allows us to define
quasimomenta and the band structure in the Floquet representation, by analogy
with the Bloch waves of solid-state physics. Applying laser pulses spaced by 1/3
of the molecular rotational period creates a lattice with three atoms per unit
cell with staggered hopping. Within the synthetic dimension of the laser strength,
we discover Dirac cones with topological charges. These Dirac cones, topologically
protected by reflection and time-reversal symmetry, are reminiscent of (although
not equivalent to) that seen in graphene. They—and the corresponding edge states—are
broadly tunable by adjusting the laser strength and can be observed in present-day
experiments by measuring molecular alignment and populations of rotational levels.
This paves the way to study controllable topological physics in gas-phase experiments
with small molecules as well as to classify dynamical molecular states by their
topological invariants.
acknowledgement: M. L. acknowledges support by the European Research Council (ERC)
Starting Grant No. 801770 (ANGULON).
article_number: '103202'
article_processing_charge: No
article_type: original
author:
- first_name: Volker
full_name: Karle, Volker
id: D7C012AE-D7ED-11E9-95E8-1EC5E5697425
last_name: Karle
- first_name: Areg
full_name: Ghazaryan, Areg
id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
last_name: Ghazaryan
orcid: 0000-0001-9666-3543
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
citation:
ama: Karle V, Ghazaryan A, Lemeshko M. Topological charges of periodically kicked
molecules. Physical Review Letters. 2023;130(10). doi:10.1103/PhysRevLett.130.103202
apa: Karle, V., Ghazaryan, A., & Lemeshko, M. (2023). Topological charges of
periodically kicked molecules. Physical Review Letters. American Physical
Society. https://doi.org/10.1103/PhysRevLett.130.103202
chicago: Karle, Volker, Areg Ghazaryan, and Mikhail Lemeshko. “Topological Charges
of Periodically Kicked Molecules.” Physical Review Letters. American Physical
Society, 2023. https://doi.org/10.1103/PhysRevLett.130.103202.
ieee: V. Karle, A. Ghazaryan, and M. Lemeshko, “Topological charges of periodically
kicked molecules,” Physical Review Letters, vol. 130, no. 10. American
Physical Society, 2023.
ista: Karle V, Ghazaryan A, Lemeshko M. 2023. Topological charges of periodically
kicked molecules. Physical Review Letters. 130(10), 103202.
mla: Karle, Volker, et al. “Topological Charges of Periodically Kicked Molecules.”
Physical Review Letters, vol. 130, no. 10, 103202, American Physical Society,
2023, doi:10.1103/PhysRevLett.130.103202.
short: V. Karle, A. Ghazaryan, M. Lemeshko, Physical Review Letters 130 (2023).
date_created: 2023-04-02T22:01:10Z
date_published: 2023-03-10T00:00:00Z
date_updated: 2023-08-01T14:02:06Z
day: '10'
department:
- _id: MiLe
doi: 10.1103/PhysRevLett.130.103202
ec_funded: 1
external_id:
arxiv:
- '2206.07067'
isi:
- '000957635500003'
intvolume: ' 130'
isi: 1
issue: '10'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2206.07067
month: '03'
oa: 1
oa_version: Preprint
project:
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '801770'
name: 'Angulon: physics and applications of a new quasiparticle'
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
link:
- description: News on the ISTA website
relation: press_release
url: https://ista.ac.at/en/news/topology-of-rotating-molecules/
scopus_import: '1'
status: public
title: Topological charges of periodically kicked molecules
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 130
year: '2023'
...
---
_id: '12790'
abstract:
- lang: eng
text: Motivated by the recent discoveries of superconductivity in bilayer and trilayer
graphene, we theoretically investigate superconductivity and other interaction-driven
phases in multilayer graphene stacks. To this end, we study the density of states
of multilayer graphene with up to four layers at the single-particle band structure
level in the presence of a transverse electric field. Among the considered structures,
tetralayer graphene with rhombohedral (ABCA) stacking reaches the highest density
of states. We study the phases that can arise in ABCA graphene by tuning the carrier
density and transverse electric field. For a broad region of the tuning parameters,
the presence of strong Coulomb repulsion leads to a spontaneous spin and valley
symmetry breaking via Stoner transitions. Using a model that incorporates the
spontaneous spin and valley polarization, we explore the Kohn-Luttinger mechanism
for superconductivity driven by repulsive Coulomb interactions. We find that the
strongest superconducting instability is in the p-wave channel, and occurs in
proximity to the onset of Stoner transitions. Interestingly, we find a range of
densities and transverse electric fields where superconductivity develops out
of a strongly corrugated, singly connected Fermi surface in each valley, leading
to a topologically nontrivial chiral p+ip superconducting state with an even number
of copropagating chiral Majorana edge modes. Our work establishes ABCA-stacked
tetralayer graphene as a promising platform for observing strongly correlated
physics and topological superconductivity.
acknowledgement: E.B. and T.H. were supported by the European Research Council (ERC)
under grant HQMAT (Grant Agreement No. 817799), by the Israel-USA Binational Science
Foundation (BSF), and by a Research grant from Irving and Cherna Moskowitz.
article_number: '104502'
article_processing_charge: No
article_type: original
author:
- first_name: Areg
full_name: Ghazaryan, Areg
id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
last_name: Ghazaryan
orcid: 0000-0001-9666-3543
- first_name: Tobias
full_name: Holder, Tobias
last_name: Holder
- first_name: Erez
full_name: Berg, Erez
last_name: Berg
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
citation:
ama: Ghazaryan A, Holder T, Berg E, Serbyn M. Multilayer graphenes as a platform
for interaction-driven physics and topological superconductivity. Physical
Review B. 2023;107(10). doi:10.1103/PhysRevB.107.104502
apa: Ghazaryan, A., Holder, T., Berg, E., & Serbyn, M. (2023). Multilayer graphenes
as a platform for interaction-driven physics and topological superconductivity.
Physical Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.107.104502
chicago: Ghazaryan, Areg, Tobias Holder, Erez Berg, and Maksym Serbyn. “Multilayer
Graphenes as a Platform for Interaction-Driven Physics and Topological Superconductivity.”
Physical Review B. American Physical Society, 2023. https://doi.org/10.1103/PhysRevB.107.104502.
ieee: A. Ghazaryan, T. Holder, E. Berg, and M. Serbyn, “Multilayer graphenes as
a platform for interaction-driven physics and topological superconductivity,”
Physical Review B, vol. 107, no. 10. American Physical Society, 2023.
ista: Ghazaryan A, Holder T, Berg E, Serbyn M. 2023. Multilayer graphenes as a platform
for interaction-driven physics and topological superconductivity. Physical Review
B. 107(10), 104502.
mla: Ghazaryan, Areg, et al. “Multilayer Graphenes as a Platform for Interaction-Driven
Physics and Topological Superconductivity.” Physical Review B, vol. 107,
no. 10, 104502, American Physical Society, 2023, doi:10.1103/PhysRevB.107.104502.
short: A. Ghazaryan, T. Holder, E. Berg, M. Serbyn, Physical Review B 107 (2023).
date_created: 2023-04-02T22:01:10Z
date_published: 2023-03-01T00:00:00Z
date_updated: 2023-08-01T13:59:29Z
day: '01'
department:
- _id: MaSe
- _id: MiLe
doi: 10.1103/PhysRevB.107.104502
external_id:
arxiv:
- '2211.02492'
isi:
- '000945526400003'
intvolume: ' 107'
isi: 1
issue: '10'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2211.02492
month: '03'
oa: 1
oa_version: Preprint
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
link:
- description: News on the ISTA website
relation: press_release
url: https://ista.ac.at/en/news/reaching-superconductivity-layer-by-layer/
scopus_import: '1'
status: public
title: Multilayer graphenes as a platform for interaction-driven physics and topological
superconductivity
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 107
year: '2023'
...
---
_id: '12831'
abstract:
- lang: eng
text: The angulon, a quasiparticle formed by a quantum rotor dressed by the excitations
of a many-body bath, can be used to describe an impurity rotating in a fluid or
solid environment. Here, we propose a coherent state ansatz in the co-rotating
frame, which provides a comprehensive theoretical description of angulons. We
reveal the quasiparticle properties, such as energies, quasiparticle weights,
and spectral functions, and show that our ansatz yields a persistent decrease
in the impurity’s rotational constant due to many-body dressing, which is consistent
with experimental observations. From our study, a picture of the angulon emerges
as an effective spin interacting with a magnetic field that is self-consistently
generated by the molecule’s rotation. Moreover, we discuss rotational spectroscopy,
which focuses on the response of rotating molecules to a laser perturbation in
the linear response regime. Importantly, we take into account initial-state interactions
that have been neglected in prior studies and reveal their impact on the excitation
spectrum. To examine the angulon instability regime, we use a single-excitation
ansatz and obtain results consistent with experiments, in which a broadening of
spectral lines is observed while phonon wings remain highly suppressed due to
initial-state interactions.
acknowledgement: We thank Ignacio Cirac, Christian Schmauder, and Henrik Stapelfeldt
for their valuable discussions. We acknowledge support by the Max Planck Society
and the Deutsche Forschungsgemeinschaft under Germany’s Excellence Strategy EXC
2181/1—390900948 (the Heidelberg STRUCTURES Excellence Cluster). M.L. acknowledges
support from the European Research Council (ERC) Starting Grant No. 801770 (ANGULON).
T.S. is supported by the National Key Research and Development Program of China
(Grant No. 2017YFA0718304) and the National Natural Science Foundation of China
(Grant Nos. 11974363, 12135018, and 12047503).
article_number: '134301'
article_processing_charge: No
article_type: original
author:
- first_name: Zhongda
full_name: Zeng, Zhongda
last_name: Zeng
- first_name: Enderalp
full_name: Yakaboylu, Enderalp
id: 38CB71F6-F248-11E8-B48F-1D18A9856A87
last_name: Yakaboylu
orcid: 0000-0001-5973-0874
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Tao
full_name: Shi, Tao
last_name: Shi
- first_name: Richard
full_name: Schmidt, Richard
last_name: Schmidt
citation:
ama: Zeng Z, Yakaboylu E, Lemeshko M, Shi T, Schmidt R. Variational theory of angulons
and their rotational spectroscopy. The Journal of Chemical Physics. 2023;158(13).
doi:10.1063/5.0135893
apa: Zeng, Z., Yakaboylu, E., Lemeshko, M., Shi, T., & Schmidt, R. (2023). Variational
theory of angulons and their rotational spectroscopy. The Journal of Chemical
Physics. American Institute of Physics. https://doi.org/10.1063/5.0135893
chicago: Zeng, Zhongda, Enderalp Yakaboylu, Mikhail Lemeshko, Tao Shi, and Richard
Schmidt. “Variational Theory of Angulons and Their Rotational Spectroscopy.” The
Journal of Chemical Physics. American Institute of Physics, 2023. https://doi.org/10.1063/5.0135893.
ieee: Z. Zeng, E. Yakaboylu, M. Lemeshko, T. Shi, and R. Schmidt, “Variational theory
of angulons and their rotational spectroscopy,” The Journal of Chemical Physics,
vol. 158, no. 13. American Institute of Physics, 2023.
ista: Zeng Z, Yakaboylu E, Lemeshko M, Shi T, Schmidt R. 2023. Variational theory
of angulons and their rotational spectroscopy. The Journal of Chemical Physics.
158(13), 134301.
mla: Zeng, Zhongda, et al. “Variational Theory of Angulons and Their Rotational
Spectroscopy.” The Journal of Chemical Physics, vol. 158, no. 13, 134301,
American Institute of Physics, 2023, doi:10.1063/5.0135893.
short: Z. Zeng, E. Yakaboylu, M. Lemeshko, T. Shi, R. Schmidt, The Journal of Chemical
Physics 158 (2023).
date_created: 2023-04-16T22:01:07Z
date_published: 2023-04-07T00:00:00Z
date_updated: 2023-08-01T14:08:47Z
day: '07'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1063/5.0135893
ec_funded: 1
external_id:
arxiv:
- '2211.08070'
isi:
- '000970038800001'
file:
- access_level: open_access
checksum: 8d801babea4df48e08895c76571bb19e
content_type: application/pdf
creator: dernst
date_created: 2023-04-17T07:28:38Z
date_updated: 2023-04-17T07:28:38Z
file_id: '12841'
file_name: 2023_JourChemicalPhysics_Zeng.pdf
file_size: 7388057
relation: main_file
success: 1
file_date_updated: 2023-04-17T07:28:38Z
has_accepted_license: '1'
intvolume: ' 158'
isi: 1
issue: '13'
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
project:
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '801770'
name: 'Angulon: physics and applications of a new quasiparticle'
publication: The Journal of Chemical Physics
publication_identifier:
eissn:
- 1089-7690
publication_status: published
publisher: American Institute of Physics
quality_controlled: '1'
scopus_import: '1'
status: public
title: Variational theory of angulons and their rotational spectroscopy
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: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 158
year: '2023'
...
---
_id: '12914'
abstract:
- lang: eng
text: We numerically study two methods of measuring tunneling times using a quantum
clock. In the conventional method using the Larmor clock, we show that the Larmor
tunneling time can be shorter for higher tunneling barriers. In the second method,
we study the probability of a spin-flip of a particle when it is transmitted through
a potential barrier including a spatially rotating field interacting with its
spin. According to the adiabatic theorem, the probability depends on the velocity
of the particle inside the barrier. It is numerically observed that the probability
increases for higher barriers, which is consistent with the result obtained by
the Larmor clock. By comparing outcomes for different initial spin states, we
suggest that one of the main causes of the apparent decrease in the tunneling
time can be the filtering effect occurring at the end of the barrier.
acknowledgement: We thank W. H. Zurek, N. Sinitsyn, M. O. Scully, M. Arndt, and C.
H. Marrows for helpful discussions. F.S. acknowledges support from the Los Alamos
National Laboratory LDRD program under Project No. 20230049DR and the Center for
Nonlinear Studies. F.S. also thanks the European Union’s Horizon 2020 research and
innovation program under the Marie Skłodowska-Curie Grant No. 754411 for support.
W.G.U. thanks the Natural Science and Engineering Research Council of Canada, the
Hagler Institute of Texas A&M University, the Helmholz Inst HZDR, Germany for support
while this work was being done.
article_number: '042216'
article_processing_charge: No
article_type: original
author:
- first_name: Fumika
full_name: Suzuki, Fumika
id: 650C99FC-1079-11EA-A3C0-73AE3DDC885E
last_name: Suzuki
orcid: 0000-0003-4982-5970
- first_name: William G.
full_name: Unruh, William G.
last_name: Unruh
citation:
ama: Suzuki F, Unruh WG. Numerical quantum clock simulations for measuring tunneling
times. Physical Review A. 2023;107(4). doi:10.1103/PhysRevA.107.042216
apa: Suzuki, F., & Unruh, W. G. (2023). Numerical quantum clock simulations
for measuring tunneling times. Physical Review A. American Physical Society.
https://doi.org/10.1103/PhysRevA.107.042216
chicago: Suzuki, Fumika, and William G. Unruh. “Numerical Quantum Clock Simulations
for Measuring Tunneling Times.” Physical Review A. American Physical Society,
2023. https://doi.org/10.1103/PhysRevA.107.042216.
ieee: F. Suzuki and W. G. Unruh, “Numerical quantum clock simulations for measuring
tunneling times,” Physical Review A, vol. 107, no. 4. American Physical
Society, 2023.
ista: Suzuki F, Unruh WG. 2023. Numerical quantum clock simulations for measuring
tunneling times. Physical Review A. 107(4), 042216.
mla: Suzuki, Fumika, and William G. Unruh. “Numerical Quantum Clock Simulations
for Measuring Tunneling Times.” Physical Review A, vol. 107, no. 4, 042216,
American Physical Society, 2023, doi:10.1103/PhysRevA.107.042216.
short: F. Suzuki, W.G. Unruh, Physical Review A 107 (2023).
date_created: 2023-05-07T22:01:03Z
date_published: 2023-04-20T00:00:00Z
date_updated: 2023-08-01T14:33:21Z
day: '20'
department:
- _id: MiLe
doi: 10.1103/PhysRevA.107.042216
ec_funded: 1
external_id:
arxiv:
- '2207.13130'
isi:
- '000975799300006'
intvolume: ' 107'
isi: 1
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2207.13130
month: '04'
oa: 1
oa_version: Preprint
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: Physical Review A
publication_identifier:
eissn:
- 2469-9934
issn:
- 2469-9926
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Numerical quantum clock simulations for measuring tunneling times
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 107
year: '2023'
...
---
_id: '13233'
abstract:
- lang: eng
text: We study the impact of finite-range physics on the zero-range-model analysis
of three-body recombination in ultracold atoms. We find that temperature dependence
of the zero-range parameters can vary from one set of measurements to another
as it may be driven by the distribution of error bars in the experiment, and not
by the underlying three-body physics. To study finite-temperature effects in three-body
recombination beyond the zero-range physics, we introduce and examine a finite-range
model based upon a hyperspherical formalism. The systematic error discussed in
this Letter may provide a significant contribution to the error bars of measured
three-body parameters.
acknowledgement: We thank Jan Arlt, Hans-Werner Hammer, and Karsten Riisager for useful
discussions. M.L. acknowledges support by the European Research Council (ERC) Starting
Grant No. 801770 (ANGULON).
article_number: L061304
article_processing_charge: No
article_type: letter_note
author:
- first_name: Sofya
full_name: Agafonova, Sofya
id: 09501ff6-dca7-11ea-a8ae-b3e0b9166e80
last_name: Agafonova
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Artem
full_name: Volosniev, Artem
id: 37D278BC-F248-11E8-B48F-1D18A9856A87
last_name: Volosniev
orcid: 0000-0003-0393-5525
citation:
ama: Agafonova S, Lemeshko M, Volosniev A. Finite-range bias in fitting three-body
loss to the zero-range model. Physical Review A. 2023;107(6). doi:10.1103/PhysRevA.107.L061304
apa: Agafonova, S., Lemeshko, M., & Volosniev, A. (2023). Finite-range bias
in fitting three-body loss to the zero-range model. Physical Review A.
American Physical Society. https://doi.org/10.1103/PhysRevA.107.L061304
chicago: Agafonova, Sofya, Mikhail Lemeshko, and Artem Volosniev. “Finite-Range
Bias in Fitting Three-Body Loss to the Zero-Range Model.” Physical Review A.
American Physical Society, 2023. https://doi.org/10.1103/PhysRevA.107.L061304.
ieee: S. Agafonova, M. Lemeshko, and A. Volosniev, “Finite-range bias in fitting
three-body loss to the zero-range model,” Physical Review A, vol. 107,
no. 6. American Physical Society, 2023.
ista: Agafonova S, Lemeshko M, Volosniev A. 2023. Finite-range bias in fitting three-body
loss to the zero-range model. Physical Review A. 107(6), L061304.
mla: Agafonova, Sofya, et al. “Finite-Range Bias in Fitting Three-Body Loss to the
Zero-Range Model.” Physical Review A, vol. 107, no. 6, L061304, American
Physical Society, 2023, doi:10.1103/PhysRevA.107.L061304.
short: S. Agafonova, M. Lemeshko, A. Volosniev, Physical Review A 107 (2023).
date_created: 2023-07-16T22:01:10Z
date_published: 2023-06-20T00:00:00Z
date_updated: 2023-08-02T06:31:52Z
day: '20'
department:
- _id: MiLe
- _id: OnHo
doi: 10.1103/PhysRevA.107.L061304
ec_funded: 1
external_id:
arxiv:
- '2302.01022'
isi:
- '001019748000005'
intvolume: ' 107'
isi: 1
issue: '6'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2302.01022
month: '06'
oa: 1
oa_version: Preprint
project:
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '801770'
name: 'Angulon: physics and applications of a new quasiparticle'
publication: Physical Review A
publication_identifier:
eissn:
- 2469-9934
issn:
- 2469-9926
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Finite-range bias in fitting three-body loss to the zero-range model
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 107
year: '2023'
...
---
_id: '13966'
abstract:
- lang: eng
text: We present a low-scaling diagrammatic Monte Carlo approach to molecular correlation
energies. Using combinatorial graph theory to encode many-body Hugenholtz diagrams,
we sample the Møller-Plesset (MPn) perturbation series, obtaining accurate correlation
energies up to n=5, with quadratic scaling in the number of basis functions. Our
technique reduces the computational complexity of the molecular many-fermion correlation
problem, opening up the possibility of low-scaling, accurate stochastic computations
for a wide class of many-body systems described by Hugenholtz diagrams.
acknowledgement: We acknowledge stimulating discussions with Sergey Varganov, Artur
Izmaylov, Jacek Kłos, Piotr Żuchowski, Dominika Zgid, Nikolay Prokof'ev, Boris Svistunov,
Robert Parrish, and Andreas Heßelmann. G.B. and Q.P.H. acknowledge support from
the Austrian Science Fund (FWF) under Projects No. M2641-N27 and No. M2751. M.L.
acknowledges support by the FWF under Project No. P29902-N27, and by the European
Research Council (ERC) Starting Grant No. 801770 (ANGULON). T.V.T. was supported
by the NSF CAREER award No. PHY-2045681. This work is supported by the German Research
Foundation (DFG) under Germany's Excellence Strategy EXC2181/1-390900948 (the Heidelberg
STRUCTURES Excellence Cluster). The authors acknowledge support by the state of
Baden-Württemberg through bwHPC.
article_number: '045115'
article_processing_charge: No
article_type: original
author:
- first_name: Giacomo
full_name: Bighin, Giacomo
id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87
last_name: Bighin
orcid: 0000-0001-8823-9777
- first_name: Quoc P
full_name: Ho, Quoc P
id: 3DD82E3C-F248-11E8-B48F-1D18A9856A87
last_name: Ho
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: T. V.
full_name: Tscherbul, T. V.
last_name: Tscherbul
citation:
ama: 'Bighin G, Ho QP, Lemeshko M, Tscherbul TV. Diagrammatic Monte Carlo for electronic
correlation in molecules: High-order many-body perturbation theory with low scaling.
Physical Review B. 2023;108(4). doi:10.1103/PhysRevB.108.045115'
apa: 'Bighin, G., Ho, Q. P., Lemeshko, M., & Tscherbul, T. V. (2023). Diagrammatic
Monte Carlo for electronic correlation in molecules: High-order many-body perturbation
theory with low scaling. Physical Review B. American Physical Society.
https://doi.org/10.1103/PhysRevB.108.045115'
chicago: 'Bighin, Giacomo, Quoc P Ho, Mikhail Lemeshko, and T. V. Tscherbul. “Diagrammatic
Monte Carlo for Electronic Correlation in Molecules: High-Order Many-Body Perturbation
Theory with Low Scaling.” Physical Review B. American Physical Society,
2023. https://doi.org/10.1103/PhysRevB.108.045115.'
ieee: 'G. Bighin, Q. P. Ho, M. Lemeshko, and T. V. Tscherbul, “Diagrammatic Monte
Carlo for electronic correlation in molecules: High-order many-body perturbation
theory with low scaling,” Physical Review B, vol. 108, no. 4. American
Physical Society, 2023.'
ista: 'Bighin G, Ho QP, Lemeshko M, Tscherbul TV. 2023. Diagrammatic Monte Carlo
for electronic correlation in molecules: High-order many-body perturbation theory
with low scaling. Physical Review B. 108(4), 045115.'
mla: 'Bighin, Giacomo, et al. “Diagrammatic Monte Carlo for Electronic Correlation
in Molecules: High-Order Many-Body Perturbation Theory with Low Scaling.” Physical
Review B, vol. 108, no. 4, 045115, American Physical Society, 2023, doi:10.1103/PhysRevB.108.045115.'
short: G. Bighin, Q.P. Ho, M. Lemeshko, T.V. Tscherbul, Physical Review B 108 (2023).
date_created: 2023-08-06T22:01:10Z
date_published: 2023-07-15T00:00:00Z
date_updated: 2023-08-07T08:41:29Z
day: '15'
department:
- _id: MiLe
- _id: TaHa
doi: 10.1103/PhysRevB.108.045115
ec_funded: 1
external_id:
arxiv:
- '2203.12666'
intvolume: ' 108'
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2203.12666
month: '07'
oa: 1
oa_version: Preprint
project:
- _id: 26986C82-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: M02641
name: A path-integral approach to composite impurities
- _id: 26B96266-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: M02751
name: Algebro-Geometric Applications of Factorization Homology
- _id: 26031614-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P29902
name: Quantum rotations in the presence of a many-body environment
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '801770'
name: 'Angulon: physics and applications of a new quasiparticle'
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Diagrammatic Monte Carlo for electronic correlation in molecules: High-order
many-body perturbation theory with low scaling'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 108
year: '2023'
...
---
_id: '14320'
abstract:
- lang: eng
text: The development of two-dimensional materials has resulted in a diverse range
of novel, high-quality compounds with increasing complexity. A key requirement
for a comprehensive quantitative theory is the accurate determination of these
materials' band structure parameters. However, this task is challenging due to
the intricate band structures and the indirect nature of experimental probes.
In this work, we introduce a general framework to derive band structure parameters
from experimental data using deep neural networks. We applied our method to the
penetration field capacitance measurement of trilayer graphene, an effective probe
of its density of states. First, we demonstrate that a trained deep network gives
accurate predictions for the penetration field capacitance as a function of tight-binding
parameters. Next, we use the fast and accurate predictions from the trained network
to automatically determine tight-binding parameters directly from experimental
data, with extracted parameters being in a good agreement with values in the literature.
We conclude by discussing potential applications of our method to other materials
and experimental techniques beyond penetration field capacitance.
acknowledgement: A.F.Y. acknowledges primary support from the Department of Energy
under award DE-SC0020043, and additional support from the Gordon and Betty Moore
Foundation under award GBMF9471 for group operations.
article_number: '125411'
article_processing_charge: No
article_type: original
author:
- first_name: Paul M
full_name: Henderson, Paul M
id: 13C09E74-18D9-11E9-8878-32CFE5697425
last_name: Henderson
orcid: 0000-0002-5198-7445
- first_name: Areg
full_name: Ghazaryan, Areg
id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
last_name: Ghazaryan
orcid: 0000-0001-9666-3543
- first_name: Alexander A.
full_name: Zibrov, Alexander A.
last_name: Zibrov
- first_name: Andrea F.
full_name: Young, Andrea F.
last_name: Young
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
citation:
ama: 'Henderson PM, Ghazaryan A, Zibrov AA, Young AF, Serbyn M. Deep learning extraction
of band structure parameters from density of states: A case study on trilayer
graphene. Physical Review B. 2023;108(12). doi:10.1103/physrevb.108.125411'
apa: 'Henderson, P. M., Ghazaryan, A., Zibrov, A. A., Young, A. F., & Serbyn,
M. (2023). Deep learning extraction of band structure parameters from density
of states: A case study on trilayer graphene. Physical Review B. American
Physical Society. https://doi.org/10.1103/physrevb.108.125411'
chicago: 'Henderson, Paul M, Areg Ghazaryan, Alexander A. Zibrov, Andrea F. Young,
and Maksym Serbyn. “Deep Learning Extraction of Band Structure Parameters from
Density of States: A Case Study on Trilayer Graphene.” Physical Review B.
American Physical Society, 2023. https://doi.org/10.1103/physrevb.108.125411.'
ieee: 'P. M. Henderson, A. Ghazaryan, A. A. Zibrov, A. F. Young, and M. Serbyn,
“Deep learning extraction of band structure parameters from density of states:
A case study on trilayer graphene,” Physical Review B, vol. 108, no. 12.
American Physical Society, 2023.'
ista: 'Henderson PM, Ghazaryan A, Zibrov AA, Young AF, Serbyn M. 2023. Deep learning
extraction of band structure parameters from density of states: A case study on
trilayer graphene. Physical Review B. 108(12), 125411.'
mla: 'Henderson, Paul M., et al. “Deep Learning Extraction of Band Structure Parameters
from Density of States: A Case Study on Trilayer Graphene.” Physical Review
B, vol. 108, no. 12, 125411, American Physical Society, 2023, doi:10.1103/physrevb.108.125411.'
short: P.M. Henderson, A. Ghazaryan, A.A. Zibrov, A.F. Young, M. Serbyn, Physical
Review B 108 (2023).
date_created: 2023-09-12T07:12:12Z
date_published: 2023-09-15T00:00:00Z
date_updated: 2023-09-20T09:38:24Z
day: '15'
department:
- _id: MaSe
- _id: ChLa
- _id: MiLe
doi: 10.1103/physrevb.108.125411
external_id:
arxiv:
- '2210.06310'
intvolume: ' 108'
issue: '12'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2210.06310
month: '09'
oa: 1
oa_version: Preprint
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Deep learning extraction of band structure parameters from density of states:
A case study on trilayer graphene'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 108
year: '2023'
...