Excited-state quantum phase transitions in systems with two degrees of freedom: II. Finite-size effects
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10315307" target="_blank" >RIV/00216208:11320/15:10315307 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.aop.2015.02.025" target="_blank" >http://dx.doi.org/10.1016/j.aop.2015.02.025</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.aop.2015.02.025" target="_blank" >10.1016/j.aop.2015.02.025</a>
Alternative languages
Result language
angličtina
Original language name
Excited-state quantum phase transitions in systems with two degrees of freedom: II. Finite-size effects
Original language description
This article extends our previous analysis Stransky et al. (2014) of Excited-State Quantum Phase Transitions (ESQPTs) in systems of dimension two. We focus on the oscillatory component of the quantum state density in connection with ESQPT structures accompanying a first-order ground-state transition. It is shown that a separable (integrable) system can develop rather strong finite-size precursors of ESQPT expressed as singularities in the oscillatory component of the state density. The singularities originate in effectively 1-dimensional dynamics and in some cases appear in multiple replicas with increasing excitation energy. Using a specific model example, we demonstrate that these precursors are rather resistant to proliferation of chaotic dynamics.(C) 2015 Published by Elsevier Inc.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BG - Nuclear, atomic and molecular physics, accelerators
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA13-07117S" target="_blank" >GA13-07117S: Statistical approaches to quantum many-body systems</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Annals of Physics
ISSN
0003-4916
e-ISSN
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Volume of the periodical
neuveden
Issue of the periodical within the volume
356
Country of publishing house
US - UNITED STATES
Number of pages
25
Pages from-to
57-82
UT code for WoS article
000355892800004
EID of the result in the Scopus database
2-s2.0-84924732005