Nature of the Spin Glass State
Abstract
The nature of the spin glass state is investigated by studying changes to the ground state when a weak perturbation is applied to the bulk of the system. We consider short range models in three and four dimensions and the infinite range Sherrington-Kirkpatrick (SK) and Viana-Bray models. Our results for the SK and Viana-Bray models agree with the replica symmetry breaking picture. The data for the short range models fit naturally a picture in which there are large scale excitations which cost a finite energy but whose surface has a fractal dimension, , less than the space dimension . We also discuss a possible crossover to other behavior at larger length scales than the sizes studied.
Keywords
Cite
@article{arxiv.cond-mat/0002134,
title = {Nature of the Spin Glass State},
author = {Matteo Palassini and A. P. Young},
journal= {arXiv preprint arXiv:cond-mat/0002134},
year = {2009}
}
Comments
4 pages, 4 postscript figures included. Final version, only minor changes made