| Journal: | Brazilian journal of physics |
| Database: | PERIÓDICA |
| System number: | 000390697 |
| ISSN: | 0103-9733 |
| Authors: | Santos, Jander P1 Barreto, F.C. Sa2 |
| Institutions: | 1Universidade Federal de Sao Joao del Rei, Departamento de Matematica, Sao Joao del Rei, Minas Gerais. Brasil 2Universidade Federal de Minas Gerais, Departamento de Fisica, Belo Horizonte, Minas Gerais. Brasil |
| Year: | 2016 |
| Season: | Feb |
| Volumen: | 46 |
| Number: | 1 |
| Pages: | 70-77 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English abstract | Starting from correlation identities for the Ashkin-Teller model and using correlation inequalities, we obtain rigorous upper bounds on the critical temperatures. The results were obtained in hexagonal, square, and cubic lattices and improve over effective field type calculations. The rigorous upper bounds results are compared to those obtained by other methods |
| Disciplines: | Física y astronomía |
| Keyword: | Física de materia condensada, Diagrama de fases, Modelo de Ashkin-Teller, Desigualdades de correlación, Temperatura crítica |
| Keyword: | Physics and astronomy, Condensed matter physics, Phase diagram, Ashkin-Teller model, Correlation inequalities, Critical temperature |
| Full text: | Texto completo (Ver PDF) |
