Fidelity approach to the disordered quantum XY model

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dc.creatorGarnerone, Silvano
dc.creatorJacobson, N. Tobias
dc.creatorHaas, Stephan
dc.creatorZanardi, Paolo
dc.date2008-08-29
dc.date2009-02-05
dc.date.accessioned2026-07-07T12:37:28Z
dc.date.available2026-07-07T12:37:28Z
dc.descriptionWe study the random XY spin chain in a transverse field by analyzing the susceptibility of the ground state fidelity, numerically evaluated through a standard mapping of the model onto quasi-free fermions. It is found that the fidelity susceptibility and its scaling properties provide useful information about the phase diagram. In particular it is possible to determine the Ising critical line and the Griffiths phase regions, in agreement with previous analytical and numerical results.
dc.description4 pages, 3 figures; references added
dc.identifierhttps://arxiv.org/abs/0808.4140
dc.identifierhttp://arxiv.org/abs/0808.4140
dc.identifierPhys. Rev. Lett. 102, 057205 (2009)
dc.identifierdoi:10.1103/PhysRevLett.102.057205
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/218450
dc.subjectQuantum Physics
dc.subjectStrongly Correlated Electrons
dc.titleFidelity approach to the disordered quantum XY model
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