Interaction-disorder competition in a spin system evaluated through the Loschmidt echo

dc.creatorZangara, Pablo René
dc.creatorDente, Axel Damián
dc.creatorIucci, Carlos Aníbal
dc.creatorLevstein, Patricia Rebeca
dc.creatorPastawski, Horacio Miguel
dc.date2013-11
dc.date2020-06-19T15:56:35Z
dc.date.accessioned2023-07-14T19:45:58Z
dc.date.available2023-07-14T19:45:58Z
dc.identifierhttp://sedici.unlp.edu.ar/handle/10915/98625
dc.identifierhttps://ri.conicet.gov.ar/11336/23720
dc.identifierhttp://prb.aps.org/abstract/PRB/v88/i19/e195106
dc.identifierhttps://arxiv.org/abs/1305.0408
dc.identifierissn:0163-1829
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7436600
dc.descriptionThe interplay between interactions and disorder in closed quantum many-body systems is relevant for thermalization phenomenon. In this paper, we address this competition in an infinite temperature spin system by means of the Loschmidt echo (LE), which is based on a time reversal procedure. This quantity has been formerly employed to connect quantum and classical chaos, and in the present many-body scenario we use it as a dynamical witness. We assess the LE time scales as a function of disorder and interaction strengths. The strategy enables a qualitative phase diagram that shows the regions of ergodic and nonergodic behavior of the polarization under the echo dynamics.
dc.descriptionInstituto de Física La Plata
dc.formatapplication/pdf
dc.format1951061-1951064
dc.languageen
dc.rightshttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.rightsCreative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.subjectFísica
dc.subjectDisorder
dc.subjectSpin chain
dc.subjectQuench
dc.subjectLoschmidt echo
dc.titleInteraction-disorder competition in a spin system evaluated through the Loschmidt echo
dc.typeArticulo
dc.typePreprint


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