Non-zero entropy density in the XY chain out of equilibrium

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dc.creatorAschbacher, Walter H.
dc.date2006-03-20
dc.date2006-10-20
dc.date.accessioned2026-07-07T07:06:21Z
dc.date.available2026-07-07T07:06:21Z
dc.descriptionThe von Neumann entropy density of a block of n spins is proved to be non-zero for large n in the non-equilibrium steady state of the XY chain constructed by coupling a finite cutout of the chain to the two infinite parts to its left and right which act as thermal reservoirs at different temperatures. Moreover, the non-equilibrium density is shown to be strictly greater than the density in thermal equilibrium.
dc.identifierhttps://arxiv.org/abs/math-ph/0603049
dc.identifierhttp://arxiv.org/abs/math-ph/0603049
dc.identifierdoi:10.1007/s11005-006-0115-1
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/109993
dc.subjectMathematical Physics
dc.subject46L60, 47B35, 82C10, 82C23
dc.titleNon-zero entropy density in the XY chain out of equilibrium
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