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一维中的远离平衡拓扑相变

Far-from-equilibrium topological phase transition in one dimension

Ze-Min Huang, Gustav John, Sebastian Diehl

arXiv 2608.13658首次发表:更新:

AI 中文总结

研究人员通过一维紧致相位模型,揭示了基于拓扑与对称性的远离平衡拓扑相变机制,确定其普适类为定向渗流(DP),并通过有效场论构建与数值分析验证了该结论。

AI 中文摘要

我们通过一个从随机初始条件确定性演化的一维紧致相位模型,揭示了一种远离平衡拓扑相变的机制。该机制基于拓扑和对称性而非唯象假设:相位紧致性允许涡旋存在,而均匀不动点抑制涡旋成核,该不动点由相移对称性隐含。涡旋诱导的无序化与向均匀性弛豫的竞争驱动了连续非平衡相变,我们确定其普适类为定向渗流(DP)。我们通过构建相应的有效场论并利用动力学标度分析数值确认DP临界标度来证明这一点。

英文摘要

We uncover a mechanism for far-from-equilibrium topological phase transitions, via a one-dimensional compact phase model evolving deterministically from random initial conditions. It rests on topology and symmetry rather than on phenomenological postulates: phase compactness permits vortices, and a homogeneous fixed point suppresses their nucleation, with the fixed point itself implied by phase-shift symmetry. The competition between vortex-induced disordering and relaxation toward homogeneity drives a continuous nonequilibrium transition, whose universality class we identify as directed percolation (DP). We demonstrate this by constructing the corresponding effective field theory and numerically confirming DP critical scaling through dynamical-scaling analysis.

Comments6+2 pages, 6 figures

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