Artículo
Quantum work for sudden quenches in Gaussian random Hamiltonians
Arrais, Eric G.; Wisniacki, Diego Ariel
; Céleri, Lucas C.; De Almeida, Norton G.; Roncaglia, Augusto Jose
; Toscano, Fabricio
Fecha de publicación:
07/2018
Editorial:
American Physical Society
Revista:
Physical Review E
ISSN:
2470-0045
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
In the context of nonequilibrium quantum thermodynamics, variables like work behave stochastically. A particular definition of the work probability density function (pdf) for coherent quantum processes allows the verification of the quantum version of the celebrated fluctuation theorems, due to Jarzynski and Crooks, that apply when the system is driven away from an initial equilibrium thermal state. Such a particular pdf depends basically on the details of the initial and final Hamiltonians, on the temperature of the initial thermal state, and on how some external parameter is changed during the coherent process. Using random matrix theory we derive a simple analytic expression that describes the general behavior of the work characteristic function G(u), associated with this particular work pdf for sudden quenches, valid for all the traditional Gaussian ensembles of Hamiltonians matrices. This formula well describes the general behavior of G(u) calculated from single draws of the initial and final Hamiltonians in all ranges of temperatures.
Palabras clave:
Quantum thermodynamics
,
Random matrix theory
,
Quantum work
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Colecciones
Articulos(IFIBA)
Articulos de INST.DE FISICA DE BUENOS AIRES
Articulos de INST.DE FISICA DE BUENOS AIRES
Citación
Arrais, Eric G.; Wisniacki, Diego Ariel; Céleri, Lucas C.; De Almeida, Norton G.; Roncaglia, Augusto Jose; et al.; Quantum work for sudden quenches in Gaussian random Hamiltonians; American Physical Society; Physical Review E; 98; 1; 7-2018; 1-8; 012106
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