Absence of an Almeida-Thouless line in three-dimensional spin glasses.
We present results of Monte Carlo simulations of the three-dimensional Edwards-Anderson Ising spin glass in the presence of a (random) field. A finite-size scaling analysis of the correlation length shows no indication of a transition, in contrast with the zero-field case. This suggests that there is no Almeida-Thouless line for short-range Ising spin glasses.
Young
A P
AP
Department of Physics, University of California, Santa Cruz, California 95064, USA. peter@bartok.ucsc.edu
Katzgraber
Helmut G
HG