在非互易Ising模型中,局部阶控制振荡的起始。

IF 2.2 3区 物理与天体物理 Q2 PHYSICS, FLUIDS & PLASMAS
Kristian Blom, Uwe Thiele, Aljaž Godec
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引用次数: 0

摘要

研究了在Glauber动力学下演化的非互易Ising模型中局部阶和全局阶的一般分岔行为。我们表明,在各自的格子内,最近邻相关性的临界幅度控制着由于挫折而导致的全球秩序相干振荡的出现。在这些振荡期间保持局部秩序,这意味着非平凡的时空相关性。长期存在的状态出现在强相互作用的体系中。在这两种状态中的停留时间最终会发散,从而产生有序的非平衡捕获状态,并通过鞍-节点-无限周期分岔丧失遍历行为。我们的工作提供了超越平均场近似的非互易Ising模型的全面微观理解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Local order controls the onset of oscillations in the nonreciprocal Ising model.

We elucidate the generic bifurcation behavior of local and global order in the nonreciprocal Ising model evolving under Glauber dynamics. We show that a critical magnitude of nearest-neighbor correlations within the respective lattices controls the emergence of coherent oscillations of global order as a result of frustration. Local order is maintained during these oscillations, implying nontrivial spatiotemporal correlations. Long-lived states emerge in the strong-interaction regime. The residence time in either of these states eventually diverges, giving rise to ordered nonequilibrium trapped states and a loss of ergodic behavior via a saddle-node-infinite-period bifurcation. Our work provides a comprehensive microscopic understanding of the nonreciprocal Ising model beyond the mean-field approximation.

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来源期刊
Physical Review E
Physical Review E PHYSICS, FLUIDS & PLASMASPHYSICS, MATHEMAT-PHYSICS, MATHEMATICAL
CiteScore
4.50
自引率
16.70%
发文量
2110
期刊介绍: Physical Review E (PRE), broad and interdisciplinary in scope, focuses on collective phenomena of many-body systems, with statistical physics and nonlinear dynamics as the central themes of the journal. Physical Review E publishes recent developments in biological and soft matter physics including granular materials, colloids, complex fluids, liquid crystals, and polymers. The journal covers fluid dynamics and plasma physics and includes sections on computational and interdisciplinary physics, for example, complex networks.
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