Finite size and finite temperature studies of the osp(1 vertical bar 2) spin chain

Autor(es)

Tavares, T. S. ; Ribeiro, G. A. P.

• Tipo de documento: Artigo Científico
• Fonte: Nuclear Physics B; v. 921, p. 357-374, AUG 2017.
• Citações Web of Science: 1

Resumo

We studied a quantum spin chain invariant by the superalgebra os p (1/2). We derived non-linear integral equations for the row -to -row transfer matrix eigenvalue in order to analyze its finite size scaling behavior and we determined its central charge. We also studied the thermodynamical properties of the spin chain via non-linear integral equations for the quantum transfer matrix eigenvalue. We numerically solved these NLIE and evaluated the specific heat and magnetic susceptibility. The analytical low temperature analysis was performed providing the effective central charge. The computed values are in agreement with the numerical predictions in the literature. (C) 2017 The Author(s). Published by Elsevier B.V. (AU)

• Processo FAPESP: 15/01643-8 - Propriedades físicas de modelos integráveis
• Beneficiário: Giuliano Augustus Pavan Ribeiro
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 13/17338-4 - Propriedades físicas de cadeias de spin unidimensionais
• Beneficiário: Thiago Silva Tavares
• Modalidade de apoio: Bolsas no Brasil - Doutorado