Decoherence and the loschmidt echo

Autores
Cucchietti, Fernando .M.; Dalvit, Diego A. R.; Paz, Juan Pablo; Zurek, W. H.
Año de publicación
2003
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Decoherence causes entropy increase that can be quantified using, e.g., the purity [Formula presented]. When the Hamiltonian of a quantum system is perturbed, its sensitivity to such perturbation can be measured by the Loschmidt echo [Formula presented]. It is given by the squared overlap between the perturbed and unperturbed state. We describe the relation between the temporal behavior of [Formula presented] and the average [Formula presented]. In this way we show that the decay of the Loschmidt echo can be analyzed using tools developed in the study of decoherence. In particular, for systems with a classically chaotic Hamiltonian the decay of [Formula presented] and [Formula presented] has a regime where it is dominated by the Lyapunov exponents. © 2003 The American Physical Society.
Fil: Cucchietti, Fernando .M.. Los Alamos National High Magnetic Field Laboratory; Estados Unidos
Fil: Dalvit, Diego A. R.. Los Alamos National High Magnetic Field Laboratory; Estados Unidos
Fil: Paz, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Zurek, W. H.. Los Alamos National High Magnetic Field Laboratory; Estados Unidos
Materia
Decoherence
Loschmidt Echo
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/78182
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/78182
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network_name_str CONICET Digital (CONICET)
spelling Decoherence and the loschmidt echoCucchietti, Fernando .M.Dalvit, Diego A. R.Paz, Juan PabloZurek, W. H.DecoherenceLoschmidt Echohttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Decoherence causes entropy increase that can be quantified using, e.g., the purity [Formula presented]. When the Hamiltonian of a quantum system is perturbed, its sensitivity to such perturbation can be measured by the Loschmidt echo [Formula presented]. It is given by the squared overlap between the perturbed and unperturbed state. We describe the relation between the temporal behavior of [Formula presented] and the average [Formula presented]. In this way we show that the decay of the Loschmidt echo can be analyzed using tools developed in the study of decoherence. In particular, for systems with a classically chaotic Hamiltonian the decay of [Formula presented] and [Formula presented] has a regime where it is dominated by the Lyapunov exponents. © 2003 The American Physical Society.Fil: Cucchietti, Fernando .M.. Los Alamos National High Magnetic Field Laboratory; Estados UnidosFil: Dalvit, Diego A. R.. Los Alamos National High Magnetic Field Laboratory; Estados UnidosFil: Paz, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaFil: Zurek, W. H.. Los Alamos National High Magnetic Field Laboratory; Estados UnidosAmerican Physical Society2003-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/78182Cucchietti, Fernando .M.; Dalvit, Diego A. R.; Paz, Juan Pablo; Zurek, W. H.; Decoherence and the loschmidt echo; American Physical Society; Physical Review Letters; 91; 21; 11-2003; 210403-2104070031-9007CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.91.210403info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:58:07Zoai:ri.conicet.gov.ar:11336/78182instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:58:07.974CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Decoherence and the loschmidt echo
title Decoherence and the loschmidt echo
spellingShingle Decoherence and the loschmidt echo
Cucchietti, Fernando .M.
Decoherence
Loschmidt Echo
title_short Decoherence and the loschmidt echo
title_full Decoherence and the loschmidt echo
title_fullStr Decoherence and the loschmidt echo
title_full_unstemmed Decoherence and the loschmidt echo
title_sort Decoherence and the loschmidt echo
dc.creator.none.fl_str_mv Cucchietti, Fernando .M.
Dalvit, Diego A. R.
Paz, Juan Pablo
Zurek, W. H.
author Cucchietti, Fernando .M.
author_facet Cucchietti, Fernando .M.
Dalvit, Diego A. R.
Paz, Juan Pablo
Zurek, W. H.
author_role author
author2 Dalvit, Diego A. R.
Paz, Juan Pablo
Zurek, W. H.
author2_role author
author
author
dc.subject.none.fl_str_mv Decoherence
Loschmidt Echo
topic Decoherence
Loschmidt Echo
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Decoherence causes entropy increase that can be quantified using, e.g., the purity [Formula presented]. When the Hamiltonian of a quantum system is perturbed, its sensitivity to such perturbation can be measured by the Loschmidt echo [Formula presented]. It is given by the squared overlap between the perturbed and unperturbed state. We describe the relation between the temporal behavior of [Formula presented] and the average [Formula presented]. In this way we show that the decay of the Loschmidt echo can be analyzed using tools developed in the study of decoherence. In particular, for systems with a classically chaotic Hamiltonian the decay of [Formula presented] and [Formula presented] has a regime where it is dominated by the Lyapunov exponents. © 2003 The American Physical Society.
Fil: Cucchietti, Fernando .M.. Los Alamos National High Magnetic Field Laboratory; Estados Unidos
Fil: Dalvit, Diego A. R.. Los Alamos National High Magnetic Field Laboratory; Estados Unidos
Fil: Paz, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Zurek, W. H.. Los Alamos National High Magnetic Field Laboratory; Estados Unidos
description Decoherence causes entropy increase that can be quantified using, e.g., the purity [Formula presented]. When the Hamiltonian of a quantum system is perturbed, its sensitivity to such perturbation can be measured by the Loschmidt echo [Formula presented]. It is given by the squared overlap between the perturbed and unperturbed state. We describe the relation between the temporal behavior of [Formula presented] and the average [Formula presented]. In this way we show that the decay of the Loschmidt echo can be analyzed using tools developed in the study of decoherence. In particular, for systems with a classically chaotic Hamiltonian the decay of [Formula presented] and [Formula presented] has a regime where it is dominated by the Lyapunov exponents. © 2003 The American Physical Society.
publishDate 2003
dc.date.none.fl_str_mv 2003-11
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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://hdl.handle.net/11336/78182
Cucchietti, Fernando .M.; Dalvit, Diego A. R.; Paz, Juan Pablo; Zurek, W. H.; Decoherence and the loschmidt echo; American Physical Society; Physical Review Letters; 91; 21; 11-2003; 210403-210407
0031-9007
CONICET Digital
CONICET
url http://hdl.handle.net/11336/78182
identifier_str_mv Cucchietti, Fernando .M.; Dalvit, Diego A. R.; Paz, Juan Pablo; Zurek, W. H.; Decoherence and the loschmidt echo; American Physical Society; Physical Review Letters; 91; 21; 11-2003; 210403-210407
0031-9007
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.91.210403
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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