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 0711.0205cond-mat.stat-mechcond-mat.dis-nn
收藏

Edwards-Anderson自旋玻璃模型中畴壁的分形维数

Fractal dimension of domain walls in the Edwards-Anderson spin glass model

S. Risau-Gusman, F. Roma

摘要:

我们直接研究了在周期和反周期边界条件下,通过比较Edwards-Anderson自旋玻璃模型的基态得到的畴壁长度。对于双峰型和高斯型键分布,我们分离了DW,并直接计算了它的分形维数$d_f$。我们的研究结果表明,即使在三维$d_f$是相同的两种分布的债券,这显然不是二维(2D)系统的情况。另外,与键呈高斯分布的二维Edwards-Anderson自旋玻璃的情况相反,我们没有发现键呈双峰分布的DW可以描述为Schramm-Loewner演化过程的证据.

英文摘要:

We study directly the length of the domain walls (DW) obtained by comparing the ground states of the Edwards-Anderson spin glass model subject to periodic and antiperiodic boundary conditions. For the bimodal and Gaussian bond distributions, we have isolated the DW and have calculated directly its fractal dimension $d_f$. Our results show that, even though in three dimensions $d_f$ is the same for both distributions of bonds, this is clearly not the case for two-dimensional (2D) systems. In addition, contrary to what happens in the case of the 2D Edwards-Anderson spin glass with Gaussian distribution of bonds, we find no evidence that the DW for the bimodal distribution of bonds can be described as a Schramm-Loewner evolution processes.

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。

↑