Order-parameter fluctuations in Ising spin glasses at low temperatures
Disordered Systems and Neural Networks
2009-11-10 v1
Abstract
We present a numerical study of the order-parameter fluctuations for Ising spin glasses in three and four dimensions at very low temperatures and without an external field. Accurate measurements of two previously introduced parameters, A and G, show that the order parameter is not self-averaging, consistent with a zero-temperature thermal exponent value \theta' \simeq 0, and confirm the validity of the relation G=1/3 in the thermodynamic limit in the whole low-temperature phase, as predicted by stochastic stability arguments.
Keywords
Cite
@article{arxiv.cond-mat/0308293,
title = {Order-parameter fluctuations in Ising spin glasses at low temperatures},
author = {Matteo Palassini and Marta Sales and Felix Ritort},
journal= {arXiv preprint arXiv:cond-mat/0308293},
year = {2009}
}
Comments
7 pages, 7 eps figures, RevTex