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北美退伍军人节(Veterans Day),12 日无更新
arXiv 2007.08730cond-mat.mes-hallcond-mat.othercond-mat.stat-mech
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经典扩散现象的体边对应

Bulk-edge correspondence of classical diffusion phenomena

Tsuneya Yoshida, Yasuhiro Hatsugai

摘要:

我们阐明了自然界中广泛存在的扩散系统可以成为体-边对应这一典型拓扑现象的新平台。使用一个离散的扩散方程,我们证明了出现强大的边缘状态保护的缠绕数为一维和二维系统。这些拓扑边缘状态可以通过测量边缘处的扩散动力学来实验访问。此外,通过数值模拟蜂窝晶格系统的温度分布,我们发现了一种新的扩散现象:波数为$π$的温度场不能扩散到体相,这归因于边缘态的完全局域化.

英文摘要:

We elucidate that the diffusive systems, which are widely found in nature, can be a new platform of the bulk-edge correspondence, a representative topological phenomenon. Using a discretized diffusion equation, we demonstrate the emergence of robust edge states protected by the winding number for one- and two-dimensional systems. These topological edge states can be experimentally accessible by measuring the diffusive dynamics at the edges. Furthermore, we discover a novel diffusive phenomenon by numerically simulating the distribution of temperatures for a honeycomb lattice system; the temperature field with wavenumber $π$ cannot diffuse to the bulk, which is attributed to the complete localization of the edge state.

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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