Quantum quench and prethermalization dynamics in a two-dimensional fermi gas with long-range interactions

Autores
Nessi, Emilio Nicolás; Iucci, Carlos Aníbal; Cazalilla, M. A.
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We study the effect of suddenly turning on a long-range interaction in a spinless Fermi gas in two dimensions. The short- to intermediate-time dynamics is described using the method of bosonization of the Fermi surface. The space-time dependence of the nonequilibrium fermion density matrix as well as the evolution after the quench of the discontinuity at the Fermi momentum of the momentum distribution are computed. We find that the asymptotic state predicted by bosonization is consistent with the existence of a prethermalization plateau, which is also predicted by a perturbative approach in terms of the fermionic degrees of freedom. The bosonized representation, however, explicitly allows for the construction of the generalized Gibbs ensemble describing the prethermalized state.
Instituto de Física La Plata
Materia
Física
Physics
Condensed matter physics
Fermi gas
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/126233
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/126233
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Quantum quench and prethermalization dynamics in a two-dimensional fermi gas with long-range interactionsNessi, Emilio NicolásIucci, Carlos AníbalCazalilla, M. A.FísicaPhysicsCondensed matter physicsFermi gasWe study the effect of suddenly turning on a long-range interaction in a spinless Fermi gas in two dimensions. The short- to intermediate-time dynamics is described using the method of bosonization of the Fermi surface. The space-time dependence of the nonequilibrium fermion density matrix as well as the evolution after the quench of the discontinuity at the Fermi momentum of the momentum distribution are computed. We find that the asymptotic state predicted by bosonization is consistent with the existence of a prethermalization plateau, which is also predicted by a perturbative approach in terms of the fermionic degrees of freedom. The bosonized representation, however, explicitly allows for the construction of the generalized Gibbs ensemble describing the prethermalized state.Instituto de Física La Plata2014-11-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/126233enginfo:eu-repo/semantics/altIdentifier/issn/1079-7114info:eu-repo/semantics/altIdentifier/issn/0031-9007info:eu-repo/semantics/altIdentifier/arxiv/1401.1986info:eu-repo/semantics/altIdentifier/pmid/25479478info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevlett.113.210402info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-15T11:22:06Zoai:sedici.unlp.edu.ar:10915/126233Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:22:06.388SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Quantum quench and prethermalization dynamics in a two-dimensional fermi gas with long-range interactions
title Quantum quench and prethermalization dynamics in a two-dimensional fermi gas with long-range interactions
spellingShingle Quantum quench and prethermalization dynamics in a two-dimensional fermi gas with long-range interactions
Nessi, Emilio Nicolás
Física
Physics
Condensed matter physics
Fermi gas
title_short Quantum quench and prethermalization dynamics in a two-dimensional fermi gas with long-range interactions
title_full Quantum quench and prethermalization dynamics in a two-dimensional fermi gas with long-range interactions
title_fullStr Quantum quench and prethermalization dynamics in a two-dimensional fermi gas with long-range interactions
title_full_unstemmed Quantum quench and prethermalization dynamics in a two-dimensional fermi gas with long-range interactions
title_sort Quantum quench and prethermalization dynamics in a two-dimensional fermi gas with long-range interactions
dc.creator.none.fl_str_mv Nessi, Emilio Nicolás
Iucci, Carlos Aníbal
Cazalilla, M. A.
author Nessi, Emilio Nicolás
author_facet Nessi, Emilio Nicolás
Iucci, Carlos Aníbal
Cazalilla, M. A.
author_role author
author2 Iucci, Carlos Aníbal
Cazalilla, M. A.
author2_role author
author
dc.subject.none.fl_str_mv Física
Physics
Condensed matter physics
Fermi gas
topic Física
Physics
Condensed matter physics
Fermi gas
dc.description.none.fl_txt_mv We study the effect of suddenly turning on a long-range interaction in a spinless Fermi gas in two dimensions. The short- to intermediate-time dynamics is described using the method of bosonization of the Fermi surface. The space-time dependence of the nonequilibrium fermion density matrix as well as the evolution after the quench of the discontinuity at the Fermi momentum of the momentum distribution are computed. We find that the asymptotic state predicted by bosonization is consistent with the existence of a prethermalization plateau, which is also predicted by a perturbative approach in terms of the fermionic degrees of freedom. The bosonized representation, however, explicitly allows for the construction of the generalized Gibbs ensemble describing the prethermalized state.
Instituto de Física La Plata
description We study the effect of suddenly turning on a long-range interaction in a spinless Fermi gas in two dimensions. The short- to intermediate-time dynamics is described using the method of bosonization of the Fermi surface. The space-time dependence of the nonequilibrium fermion density matrix as well as the evolution after the quench of the discontinuity at the Fermi momentum of the momentum distribution are computed. We find that the asymptotic state predicted by bosonization is consistent with the existence of a prethermalization plateau, which is also predicted by a perturbative approach in terms of the fermionic degrees of freedom. The bosonized representation, however, explicitly allows for the construction of the generalized Gibbs ensemble describing the prethermalized state.
publishDate 2014
dc.date.none.fl_str_mv 2014-11-17
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/126233
url http://sedici.unlp.edu.ar/handle/10915/126233
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1079-7114
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/arxiv/1401.1986
info:eu-repo/semantics/altIdentifier/pmid/25479478
info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevlett.113.210402
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 12.891075

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