Fermionic Path Integrals and Two-Dimensional Ising Model with Quenched Site Disorder
Abstract
Description
The notion of the integral over the anticommuting Grassmann variables is applied to analyze the fermionic structure of the 2D Ising model with quenched site dilution. In the $N$-replica scheme, the model is explicitly reformulated as a theory of interacting fermions on a lattice. For weak dilution, the continuum-limit approximation implies the log-log singularity in the specific heat near $T_c$.
LaTeX, 5 pages, no figures. A plenary talk at the 6th International Conference on Path Integrals from peV to TeV, August 25--29, 1998, Florence, Italy
LaTeX, 5 pages, no figures. A plenary talk at the 6th International Conference on Path Integrals from peV to TeV, August 25--29, 1998, Florence, Italy
Citation
Consulte el texto completo en el siguiente enlace:
https://arxiv.org/abs/hep-th/9906107
http://arxiv.org/abs/hep-th/9906107
In ``Path Integrals from peV to TeV: 50 Years after Feynman's Paper'', Proceedings of the 6th International Conference on Path Integrals from peV to TeV, August 25--29, 1998, Florence, Italy. Edited by R.Casalbuoni, R.Giachetti, V.Tognetti, R.Vaia and P.Verrucchi (World Scientific, Singapore, 1999) p.137-141
http://arxiv.org/abs/hep-th/9906107
In ``Path Integrals from peV to TeV: 50 Years after Feynman's Paper'', Proceedings of the 6th International Conference on Path Integrals from peV to TeV, August 25--29, 1998, Florence, Italy. Edited by R.Casalbuoni, R.Giachetti, V.Tognetti, R.Vaia and P.Verrucchi (World Scientific, Singapore, 1999) p.137-141