| Texto completo | |
| Autor(es): |
Zhu, Qiong
;
Wan, Xin
;
Narayanan, Rajesh
;
Hoyos, Jose A.
;
Vojta, Thomas
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Physical Review B; v. 91, n. 22, p. 16-pg., 2015-06-08. |
| Resumo | |
We study the effects of quenched disorder on the first-order phase transition in the two-dimensional three-color Ashkin-Teller model by means of large-scaleMonte Carlo simulations. We demonstrate that the first-order phase transition is rounded by the disorder and turns into a continuous one. Using a careful finite-size-scaling analysis, we provide strong evidence for the emerging critical behavior of the disordered Ashkin-Teller model to be in the clean two-dimensional Ising universality class, accompanied by universal logarithmic corrections. This agrees with perturbative renormalization-group predictions by Cardy. As a byproduct, we also provide support for the strong-universality scenario for the critical behavior of the two-dimensional disordered Ising model. We discuss consequences of our results for the classification of disordered phase transitions as well as generalizations to other systems. (AU) | |
| Processo FAPESP: | 13/09850-7 - Disorder, Dynamics, Frustration and Topology in Quantum Condensed Matter |
| Beneficiário: | José Abel Hoyos Neto |
| Modalidade de apoio: | Auxílio à Pesquisa - Reunião - Exterior |