Applicability of the generalized Gibbs ensemble after a quench in the quantum Ising chain

Caneva, T; Canovi, E; Rossini, Davide; Santoro G., E; Silva, A.

doi:10.1088/1742-5468/2011/07/P07015

We investigate the out-of-equilibrium dynamics of the one-dimensional quantum Ising model after a sudden quench in the transverse magnetic field. While for a translationally invariant system the statistical description of the asymptotic order parameter correlations after the quench can be performed in terms of the generalized Gibbs ensemble, we show that a breaking of translational invariance, e.g. by perturbing the boundary conditions, disrupts its validity. This effect, which of course vanishes in the thermodynamic limit, is shown to be very important in the presence of disorder.

Titolo:	Applicability of the generalized Gibbs ensemble after a quench in the quantum Ising chain
Autori:	CANEVA T CANOVI E ROSSINI, DAVIDE SANTORO G. E SILVA A. mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2011
Rivista:	JOURNAL OF STATISTICAL MECHANICS: THEORY AND EXPERIMENT
Digital Object Identifier (DOI):	http://dx.doi.org/10.1088/1742-5468/2011/07/P07015
Handle:	http://hdl.handle.net/11384/10556
Appare nelle tipologie:	1.1 Articolo in rivista

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http://hdl.handle.net/11384/10556

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