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dc.contributor.authorWang, Qian
dc.contributor.authorPérez Bernal, Francisco 
dc.date.accessioned2019-01-17T09:36:04Z
dc.date.available2019-01-17T09:36:04Z
dc.date.issued2019
dc.identifier.citationWang, Q., & Pérez-Bernal, F. (2019). Probing an excited-state quantum phase transition in a quantum many-body system via an out-of-time-order correlator. In Physical Review A (Vol. 100, Issue 6). American Physical Society (APS). https://doi.org/10.1103/physreva.100.062113es_ES
dc.identifier.issn2469-9926
dc.identifier.issn2469-9934 (electrónico)
dc.identifier.urihttp://hdl.handle.net/10272/15802
dc.description.abstractOut-of-time-order correlators (OTOCs) play an increasingly important role in different fields of physics and in particular they provide a way of quantifying information scrambling in quantum many-body systems. We verify that an OTOC can be used to probe an excited-state quantum phase transition (ESQPT) in a quantum many-body system. We examine the dynamical properties of an OTOC in the Lipkin-Meshkov-Glick model, which undergoes an ESQPT, using the exact diagonalization method. We show that the long-time evolution of the proposed OTOC is remarkably different in the different phases of the ESQPT. In consequence, we put the long-time averaged value of the OTOC forward as a possible ESQPT order parameter. Our results highlight the connections between OTOCs and ESQPTs, opening the possibility of using OTOCs for accessing experimentally ESQPTs in quantum many-body systems.es_ES
dc.language.isoenges_ES
dc.publisherAmerican Physical Societyes_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subject.otherQuantum phase transitionses_ES
dc.subject.otherQuantum many body systemes_ES
dc.titleProbing excited-state quantum phase transition in a quantum many body system via out-of-time-ordered correlatores_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.identifier.doi10.1103/PhysRevA.100.062113
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES


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