Quench dynamics of the Kondo effect: transport across an impurity coupled to interacting wires

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dc.creatorMoallison Ferreira Cavalcante
dc.creatorRodrigo Gonçalves Pereira
dc.creatorMaria Carolina de Oliveira Aguiar
dc.date.accessioned2025-01-24T00:09:41Z
dc.date.accessioned2025-09-08T23:36:12Z
dc.date.available2025-01-24T00:09:41Z
dc.date.issued2023-02-06
dc.identifier.doi10.1103/physrevb.107.075110
dc.identifier.issn2469-9969
dc.identifier.urihttps://hdl.handle.net/1843/79458
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofPhysical Review B
dc.rightsAcesso Aberto
dc.subjectFísica
dc.subjectEfeito Kondo
dc.subjectExtinção quantica
dc.subject.otherkondo effect
dc.subject.otherQuantum quench
dc.subject.otherTransport phenomena
dc.subject.otherBosonization
dc.subject.otherEffective field theory
dc.subject.otherPerturbation theory
dc.titleQuench dynamics of the Kondo effect: transport across an impurity coupled to interacting wires
dc.typeArtigo de periódico
local.citation.epage075110-10
local.citation.issue7
local.citation.spage075110-1
local.citation.volume107
local.description.resumoWe study the real-time dynamics of the Kondo effect after a quantum quench in which a magnetic impurity is coupled to two metallic Hubbard chains. Using an effective field theory approach, we find that for noninteracting electrons the charge current across the impurity is given by a scaling function that involves the Kondo time. In the interacting case, we show that the Kondo time decreases with the strength of the repulsive interaction and the time dependence of the current reveals signatures of the Kondo effect in a Luttinger liquid. In addition, we verify that the relaxation of the impurity magnetization does not exhibit universal scaling behavior in the perturbative regime below the Kondo time. Our results highlight the role of nonequilibrium dynamics as a valuable tool in the study of quantum impurities in interacting systems.
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://journals.aps.org/prb/pdf/10.1103/PhysRevB.107.075110

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