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Title:
Quantum chaos in the extended Dicke model
Authors:
ID
Wang, Qian
(Author)
Files:
Quantum_chaos_in_the_extended_Dicke_model_Wang_2022.pdf
(3,46 MB)
MD5: 7C433335B6BB4B0392466F0B1E000A5D
https://doi.org/10.3390/e24101415
Language:
English
Work type:
Scientific work
Typology:
1.01 - Original Scientific Article
Organization:
UM - University of Maribor
Abstract:
We systematically study the chaotic signatures in a quantum many-body system consisting of an ensemble of interacting two-level atoms coupled to a single-mode bosonic field, the so-called extended Dicke model. The presence of the atom–atom interaction also leads us to explore how the atomic interaction affects the chaotic characters of the model. By analyzing the energy spectral statistics and the structure of eigenstates, we reveal the quantum signatures of chaos in the model and discuss the effect of the atomic interaction. We also investigate the dependence of the boundary of chaos extracted from both eigenvalue-based and eigenstate-based indicators on the atomic interaction. We show that the impact of the atomic interaction on the spectral statistics is stronger than on the structure of eigenstates. Qualitatively, the integrablity-to-chaos transition found in the Dicke model is amplified when the interatomic interaction in the extended Dicke model is switched on.
Keywords:
quantum chaos
,
extended Dicke model
,
spectral statistics
,
eigenstate structure
Publication status:
Published
Publication version:
Version of Record
Submitted for review:
15.09.2022
Article acceptance date:
30.09.2022
Publication date:
04.10.2022
Publisher:
MDPI
Year of publishing:
2022
Number of pages:
Str. 1-13
Numbering:
Letn. 24, Št. 10, št. članka 1415
PID:
20.500.12556/DKUM-86147
UDC:
530.145
ISSN on article:
1099-4300
COBISS.SI-ID:
141829635
DOI:
10.3390/e24101415
Publication date in DKUM:
13.10.2023
Views:
345
Downloads:
34
Metadata:
Categories:
Misc.
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:
WANG, Qian, 2022, Quantum chaos in the extended Dicke model.
Entropy
[online]. 2022. Vol. 24, no. Št. 10, članka 1415, p. 1–13. [Accessed 7 April 2025]. DOI 10.3390/e24101415. Retrieved from: https://dk.um.si/IzpisGradiva.php?lang=eng&id=86147
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Record is a part of a journal
Title:
Entropy
Shortened title:
Entropy
Publisher:
MDPI
ISSN:
1099-4300
COBISS.SI-ID:
515806233
Document is financed by a project
Funder:
ARRS - Slovenian Research Agency
Project number:
J1-9112
Name:
Kvantna lokalizacija v kaotičnih sistemih
Funder:
Other - Other funder or multiple funders
Project number:
11805165
Funder:
Other - Other funder or multiple funders
Project number:
LY20A050001
Licences
License:
CC BY 4.0, Creative Commons Attribution 4.0 International
Link:
http://creativecommons.org/licenses/by/4.0/
Description:
This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:
04.10.2022
Secondary language
Language:
Slovenian
Keywords:
kvantni kaos
,
razširjeni Dickejev model
,
spektralna statistika
,
struktura lastnih stanj
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