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arXiv 1401.8010cond-mat.stat-mechcond-mat.dis-nn
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随机场下的自旋1 Hopfield模型

Spin-1 Hopfield model under a random field

C. V. Morais, M. J. Lazo, F. M. Zimmer, P. R. Krebs, S. G. Magalhaes

摘要:

本文研究了高斯随机场场中三态Hopfield模型中平凡无序和非平凡无序的作用。为了控制非平凡无序,使用Hebb相互作用。这提供了一种通过参数a=p/N来控制系统挫折的方法,在热力学极限中,从平凡的随机性变化到高度挫折的状态。我们进行了热力学分析,使用一步复制对称性破缺平均场论,获得的序参量和相图的几个强度的a,各向异性常数,和随机场。

英文摘要:

The goal of the present work is to investigate the role of trivial disorder and nontrivial disorder in the three-state Hopfield model under a Gaussian random field. In order to control the nontrivial disorder, the Hebb interaction is used. This provides a way to control the system frustration by means of the parameter a=p/N, varying from trivial randomness to a highly frustrated regime, in the thermodynamic limit. We performed the thermodynamic analysis using the one-step replica-symmetry-breaking mean field theory to obtain the order parameters and phase diagrams for several strengths of a, the anisotropy constant, and the random field.

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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