Out of equilibrium correlation functions of quantum anisotropic XY models: one-particle excitations

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dc.creatorAmico, Luigi
dc.creatorOsterloh, Andreas
dc.date2003-06-11
dc.date2003-12-15
dc.date.accessioned2026-07-07T10:48:08Z
dc.date.available2026-07-07T10:48:08Z
dc.descriptionWe calculate exactly matrix elements between states that are not eigenstates of the quantum XY model for general anisotropy. Such quantities therefore describe non equilibrium properties of the system; the Hamiltonian does not contain any time dependence. These matrix elements are expressed as a sum of Pfaffians. For single particle excitations on the ground state the Pfaffians in the sum simplify to determinants.
dc.description11 pages, no figures; revtex. Minor changes in the text; list of refs. modified
dc.identifierhttps://arxiv.org/abs/cond-mat/0306285
dc.identifierhttp://arxiv.org/abs/cond-mat/0306285
dc.identifierJ.Phys.A37:291-302,2004
dc.identifierdoi:10.1088/0305-4470/37/2/001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/183773
dc.subjectStrongly Correlated Electrons
dc.subjectHigh Energy Physics - Theory
dc.subjectMathematical Physics
dc.subjectExactly Solvable and Integrable Systems
dc.titleOut of equilibrium correlation functions of quantum anisotropic XY models: one-particle excitations
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