摘要翻译:
对于可能的Ising模型,我们提出了一个类似于Langevin方程的离散时间随机模型,该模型包含了任意数量的阻尼。它给出了正确的平衡统计量,并用于研究非平衡现象,特别是磁雪崩。阻尼的大小可以极大地改变滞回线的形状,对于小阻尼和高无序度的雪崩,大雪崩的形貌会受到极大的影响。小阻尼也改变了雪崩的尺寸分布。
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英文标题:
《Ising Dynamics with Damping》
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作者:
J.M. Deutsch and A. Berger
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最新提交年份:
2007
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分类信息:
一级分类:Physics 物理学
二级分类:Materials Science 材料科学
分类描述:Techniques, synthesis, characterization, structure. Structural phase transitions, mechanical properties, phonons. Defects, adsorbates, interfaces
技术,合成,表征,结构。结构相变,力学性质,声子。缺陷,吸附质,界面
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一级分类:Physics 物理学
二级分类:Statistical Mechanics 统计力学
分类描述:Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变,热力学,场论,非平衡现象,重整化群和标度,可积模型,湍流
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英文摘要:
We show for the Ising model that is possible construct a discrete time stochastic model analogous to the Langevin equation that incorporates an arbitrary amount of damping. It is shown to give the correct equilibrium statistics and is then used to investigate nonequilibrium phenomena, in particular, magnetic avalanches. The value of damping can greatly alter the shape of hysteresis loops, and for small damping and high disorder, the morphology of large avalanches can be drastically effected. Small damping also alters the size distribution of avalanches at criticality.
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PDF链接:
https://arxiv.org/pdf/708.3855