Adiabatic dynamics in a spin-1 chain with uniaxial single-spin anisotropy

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dc.creatorCanovi, Elena
dc.creatorRossini, Davide
dc.creatorFazio, Rosario
dc.creatorSantoro, Giuseppe E.
dc.date2009-01-10
dc.date2009-03-31
dc.date.accessioned2026-07-07T12:58:04Z
dc.date.available2026-07-07T12:58:04Z
dc.descriptionWe study the adiabatic quantum dynamics of an anisotropic spin-1 XY chain across a second order quantum phase transition. The system is driven out of equilibrium by performing a quench on the uniaxial single-spin anisotropy, that is supposed to vary linearly in time. We show that, for sufficiently large system sizes, the excess energy after the quench admits a non trivial scaling behavior that is not predictable by standard Kibble-Zurek arguments for isolated critical points or extended critical regions. This emerges from a competing effect of many accessible low-lying excited states, inside the whole continuous line of critical points.
dc.description17 pages, 8 figures, published version
dc.identifierhttps://arxiv.org/abs/0901.1384
dc.identifierhttp://arxiv.org/abs/0901.1384
dc.identifierJ. Stat. Mech. (2009) P03038
dc.identifierdoi:10.1088/1742-5468/2009/03/P03038
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/225118
dc.subjectStatistical Mechanics
dc.subjectQuantum Physics
dc.titleAdiabatic dynamics in a spin-1 chain with uniaxial single-spin anisotropy
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