| Full text | |
| Author(s): |
Tavares, T. S.
;
Ribeiro, G. A. P.
Total Authors: 2
|
| Document type: | Journal article |
| Source: | JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT; v. N/A, p. 23-pg., 2016-09-01. |
| Abstract | |
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) | |
| FAPESP's process: | 15/01643-8 - Physical properties of integrable models |
| Grantee: | Giuliano Augustus Pavan Ribeiro |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 13/17338-4 - Physical properties of one-dimensional spin chains |
| Grantee: | Thiago Silva Tavares |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 15/07780-7 - Thermodynamics and correlation of integrable models |
| Grantee: | Giuliano Augustus Pavan Ribeiro |
| Support Opportunities: | Research Grants - Visiting Researcher Grant - International |