| Texto completo | |
| Autor(es): |
Tavares, T. S.
;
Ribeiro, G. A. P.
Número total de Autores: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT; v. N/A, p. 23-pg., 2016-09-01. |
| Resumo | |
We study the phase diagram and finite temperature properties of an integrable generalization of the one-dimensional super-symmetric t-J model containing interactions explicitly breaking parity-time reversal ( PT) symmetries. To this purpose, we apply the quantum transfer matrix method which results in a finite set of non-linear integral equations. We obtain numerical solutions to these equations leading to results for thermodynamic quantities as a function of temperature, magnetic field, particle density and staggering parameter. Studying the maxima lines of entropy at low but non zero temperature reveals the phase diagram of the model. There are ten different phases which we may classify in terms of the qualitative behaviour of auxiliary functions, closely related to the dressed energy functions. (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 |
| Processo FAPESP: | 15/07780-7 - Termodinâmica e correlações de modelos integráveis |
| Beneficiário: | Giuliano Augustus Pavan Ribeiro |
| Modalidade de apoio: | Auxílio à Pesquisa - Pesquisador Visitante - Internacional |