期刊
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT
卷 -, 期 -, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1742-5468/2008/02/L02001
关键词
classical Monte Carlo simulations; critical exponents and amplitudes (theory); disordered systems (theory); spin glasses (theory)
We perform high-statistics Monte Carlo simulations of three three-dimensional Ising spin glass models: the +/- J Ising model for two values of the disorder parameter p, p = 1/2 and 0.7, and the bond-diluted +/- J model for bond-occupation probability pb = 0.45. A. nite-size scaling analysis of the quartic cumulants at the critical point shows conclusively that these models belong to the same universality class and allows us to estimate the scaling-correction exponent. related to the leading irrelevant operator, omega = 1.0(1). We also determine the critical exponents nu and eta. Taking into account the scaling corrections, we obtain nu = 2.53(8) and eta = -0.384(9).
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