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arXiv 0911.4837cond-mat.stat-mechcond-mat.other
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三维$\pm J$ Edwards-Anderson自旋玻璃模型中的类格里菲斯相

Griffiths-like phase in the three-dimensional $\pm J$ Edwards-Anderson spin-glass model

M. L. Rubio Puzzo, F. Romá, S. Bustingorry, P. M. Gleiser

摘要:

利用基态拓扑信息和损伤扩展技术,我们证明了三维$\pm J$ Edwards-Anderson自旋玻璃模型中存在类Griffiths相.对于自旋翻转动力学,损伤在大于$T_{\mathrm{g}}$(玻璃化转变温度)的温度下扩散。随着自旋取向动力学和温度在$T_{\mathrm{g}} < T < T_{\mathrm{d}}$,损害蔓延到有限区域的系统,由有限的铁磁特性的集群。$T_{\mathrm{d}}$是自旋取向损伤临界温度,其与铁磁伊辛模型的临界温度$T_{\mathrm{c}}$具有相同的数量级。目前的结果使我们能够识别集群起源格里菲斯样阶段在本模型中。

英文摘要:

Using information of the ground state topology and the damage spreading technique we show a Griffiths-like phase is present in the three-dimensional $\pm J$ Edwards-Anderson spin glass model. With spin-flipping dynamics damage spreads for temperatures larger than $T_{\mathrm{g}}$, the glass transition temperature. With spin-orienting dynamics and for temperatures in $T_{\mathrm{g}} < T < T_{\mathrm{d}}$, damage spreads over a finite region of the system, composed of finite clusters of ferromagnetic character. $T_{\mathrm{d}}$ is the spin-orienting damage critical temperature, which is of the same order as the critical temperature of the ferromagnetic Ising model, $T_{\mathrm{c}}$. The present results allow us to identify the clusters which originate the Griffiths-like phase in the present model.

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。

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