arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1105.3757cond-mat.stat-mechcond-mat.dis-nn
收藏

不同键分布的二维Edwards-Anderson自旋玻璃模型的基态能量和熵

Ground-state energy and entropy of the two-dimensional Edwards-Anderson spin-glass model with different bond distributions

D. J. Perez-Morelo, A. J. Ramirez-Pastor, F. Roma

摘要:

本文采用并行回火蒙特卡罗算法研究了二维Edwards-Anderson自旋玻璃模型。计算了不同键分布下的基态能量和熵。特别地,熵是通过使用热力学积分技术和适当的参考状态,这是由高温膨胀的方法确定的。这种策略为有限大小的格子提供了这个量的精确值。通过外推到热力学极限,确定了不同版本的自旋玻璃模型的基态能量和熵。

英文摘要:

We study the two-dimensional Edwards-Anderson spin-glass model using a parallel tempering Monte Carlo algorithm. The ground-state energy and entropy are calculated for different bond distributions. In particular, the entropy is obtained by using a thermodynamic integration technique and an appropriate reference state, which is determined with the method of high-temperature expansion. This strategy provide accurate values of this quantity for finite-size lattices. By extrapolating to the thermodynamic limit, the ground-state energy and entropy of the different versions of the spin-glass model are determined.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑