The β-expansion of periodic dressed chain models

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorSilva, E. V. Corrêa-
Autor(es): dc.creatorSouza, S. M. de-
Autor(es): dc.creatorThomaz, M. T.-
Data de aceite: dc.date.accessioned2026-02-09T12:35:15Z-
Data de disponibilização: dc.date.available2026-02-09T12:35:15Z-
Data de envio: dc.date.issued2020-11-28-
Data de envio: dc.date.issued2020-11-28-
Data de envio: dc.date.issued2011-09-15-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/45643-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/pii/S0378437111003128-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1164289-
Descrição: dc.descriptionWe revisit the method of calculating the β-expansion of the Helmholtz free energy of any one-dimensional (1D) Hamiltonian with invariance under space translations, presented in [O. Rojas, S.M. de Souza, M.T. Thomaz, J. Math. Phys. 43 (2002) 1390], extending this method to 1-D Hamiltonians that are invariant under translations along super-sites (sequences of l sites). The method is applicable, for instance, to spin models and bosonic/fermionic versions of Hubbard models, either quantum or classical. As an example, we focus on the staggered spin-S Ising model in the presence of a longitudinal magnetic field, comparing some of its thermodynamic functions to those of the standard Ising model. We show that for arbitrary values of spin (S∈{1,3/2,2,…}) but distinct values of the coupling constant and the magnetic field, the specific heat and the z-component of the staggered and usual magnetizations can be well approximated by their respective thermodynamic function of the spin-1/2 models in a suitable interval of temperature. These approximations are valid for the standard Ising model as well as for the staggered model, the thermodynamics of which are known exactly.-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourcePhysica A: Statistical Mechanics and its Applications-
Palavras-chave: dc.subjectQuantum statistical mechanicsIsing model-
Palavras-chave: dc.subjectβ-expansion-
Palavras-chave: dc.subjectIsing model-
Palavras-chave: dc.subjectStaggered-
Título: dc.titleThe β-expansion of periodic dressed chain models-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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