Reference : Thermofield dynamics: Quantum chaos versus decoherence
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
Physics and Materials Science
http://hdl.handle.net/10993/48530
Thermofield dynamics: Quantum chaos versus decoherence
English
Xu, Zhenyu [School of Physical Science and Technology, Soochow University, Suzhou 215006, China]
Chenu, Aurélia mailto [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS) >]
Prosen, Tomaž [Faculty of Mathematics and Physics, University of Ljubljana, Jadranska ulica 19, 1000 Ljubljana, Slovenia]
Del Campo Echevarria, Adolfo mailto [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS) >]
19-Feb-2021
Physical Review. B, Condensed Matter and Materials Physics
Yes
International
[en] Quantum chaos imposes universal spectral signatures that govern the thermofield dynamics of a many-body system in isolation. The fidelity between the initial and time-evolving thermofield double states exhibits as a function of time a decay, dip, ramp, and plateau. Sources of decoherence give rise to a nonunitary evolution and result in information loss. Energy dephasing gradually suppresses quantum noise fluctuations and the dip associated with spectral correlations. Decoherence further delays the appearance of the dip and shortens the span of the linear ramp associated with chaotic behavior. The interplay between signatures of quantum chaos and information loss is determined by the competition among the decoherence, dip, and plateau characteristic times, as demonstrated in the stochastic Sachdev-Ye-Kitaev model.
http://hdl.handle.net/10993/48530
10.1103/PhysRevB.103.064309

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
Xu2021PRB_Thermofield dynamics-Quantum chaos versus decoherence.pdfPublisher postprint1.21 MBView/Open

Bookmark and Share SFX Query

All documents in ORBilu are protected by a user license.