Evidence against an Almeida-Thouless line in disordered systems of Ising dipoles
Statistical Mechanics
2015-05-20 v1
Abstract
By tempered Monte Carlo simulations, an Almeida-Thouless (AT) phase-boundary line in site-diluted Ising spin systems is searched for. Spins interact only through dipolar fields and occupy a small fraction of lattice sites. The spin-glass susceptibility of these systems and of the Sherrington-Kirkpatrick model are compared. The correlation length as a function of system size and temperature is also studied. The results obtained are contrary to the existence of an AT line.
Keywords
Cite
@article{arxiv.1010.0634,
title = {Evidence against an Almeida-Thouless line in disordered systems of Ising dipoles},
author = {Julio F. Fernandez},
journal= {arXiv preprint arXiv:1010.0634},
year = {2015}
}