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Title

Quantum quench dynamics of the sine-Gordon model in some solvable limits

AuthorsIucci, A.; Cazalilla, M. A.
Issue DateMay-2010
PublisherInstitute of Physics Publishing
CitationNew Journal of Physics 12: 055019 (2010)
AbstractWith regard to the thermalization problem in isolated quantum systems, we investigate the dynamics following a quantum quench of the sine-Gordon model (sGM) in the Luther–Emery and the semiclassical limits. We consider the quench from the gapped to the gapless phase, as well as the reverse one. By obtaining analytic expressions for the one- and two-point correlation functions of the order parameter operator at zero-temperature, the manifestations of integrability in the absence of thermalization in the sGM are studied. It is shown that correlations in the long-time regime after the quench are well described by a generalized Gibbs ensemble. We also consider the case where the system is initially in contact with a reservoir at finite temperature. The possible relevance of our results to current and future experiments with ultracold atomic systems is also considered.
Description27 páginas.
Publisher version (URL)http://dx.doi.org/10.1088/1367-2630/12/5/055019
URIhttp://hdl.handle.net/10261/44149
DOI10.1088/1367-2630/12/5/055019
ISSN1367-2630
Appears in Collections:(CFM) Artículos
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