Relaxation of antiferromagnetic order in spin-1/2 chains following a quantum quench

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dc.creatorBarmettler, Peter
dc.creatorPunk, Matthias
dc.creatorGritsev, Vladimir
dc.creatorDemler, Eugene
dc.creatorAltman, Ehud
dc.date2008-10-27
dc.date2009-04-07
dc.date.accessioned2026-07-07T13:00:32Z
dc.date.available2026-07-07T13:00:32Z
dc.descriptionWe study the unitary time evolution of antiferromagnetic order in anisotropic Heisenberg chains that are initially prepared in a pure quantum state far from equilibrium. Our analysis indicates that the antiferromagnetic order imprinted in the initial state vanishes exponentially. Depending on the anisotropy parameter, oscillatory or non-oscillatory relaxation dynamics is observed. Furthermore, the corresponding relaxation time exhibits a at the critical point, in contrast to the usual notion of critical slowing down, from which a maximum is expected.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0810.4845
dc.identifierhttp://arxiv.org/abs/0810.4845
dc.identifierPhys. Rev. Lett. 102, 130603 (2009)
dc.identifierdoi:10.1103/PhysRevLett.102.130603
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/225867
dc.subjectOther Condensed Matter
dc.titleRelaxation of antiferromagnetic order in spin-1/2 chains following a quantum quench
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