Probing the Almeida-Thouless line away from the mean-field model

Article

关键词: ISING SPIN-GLASS;    MONTE-CARLO;    CRITICAL-BEHAVIOR;    MAGNETIC-FIELD;    TRANSITION;    PHASE;   

DOI  :  10.1103/PhysRevB.72.184416

来源: SCIE

【 摘 要 】

Results of Monte Carlo simulations of the one-dimensional long-range Ising spin glass with power-law interactions in the presence of a (random) field are presented. By tuning the exponent of the power-law interactions, we are able to scan the full range of possible behaviors from the infinite-range (Sherrington-Kirkpatrick) model to the short-range model. A finite-size scaling analysis of the correlation length indicates that the Almeida-Thouless line does not occur in the region with non-mean-field critical behavior in zero field. However, there is evidence that an Almeida-Thouless line does occur in the mean-field region.

【 授权许可】

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