Boundary contributions to specific heat and susceptibility in the spin-1/2 XXZ chain

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dc.creatorFurusaki, A.
dc.creatorHikihara, T.
dc.date2003-10-22
dc.date2004-09-22
dc.date.accessioned2026-07-07T02:54:21Z
dc.date.available2026-07-07T02:54:21Z
dc.descriptionExact low-temperature asymptotic behavior of boundary contribution to specific heat and susceptibility in the one-dimensional spin-1/2 XXZ model with exchange anisotropy 1/2 < Δ\le 1 is analytically obtained using the Abelian bosonization method. The boundary spin susceptibility is divergent in the low-temperature limit. This singular behavior is caused by the first-order contribution of a bulk leading irrelevant operator to boundary free energy. The result is confirmed by numerical simulations of finite-size systems. The anomalous boundary contributions in the spin isotropic case are universal.
dc.description6 pages, 3 figures; corrected typos
dc.identifierhttps://arxiv.org/abs/cond-mat/0310517
dc.identifierhttp://arxiv.org/abs/cond-mat/0310517
dc.identifierPhys. Rev. B 69, 094429 (2004)
dc.identifierdoi:10.1103/PhysRevB.69.094429
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/22508
dc.subjectStrongly Correlated Electrons
dc.subjectStatistical Mechanics
dc.titleBoundary contributions to specific heat and susceptibility in the spin-1/2 XXZ chain
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