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】
Free