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arXiv 0811.3843cond-mat.str-elhep-thquant-ph
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拓扑诱导的量子临界点附近的反常缺陷产生

Topology induced anomalous defect production by crossing a quantum critical point

A. Bermudez, D. Patanè, L. Amico, M. A. Martin-Delgado

摘要:

我们研究了拓扑结构对系统在量子临界点处失超动力学的影响。我们展示了如何出现的某些边缘状态,这充分体现了系统的拓扑结构,极大地修改了过程中的缺陷生产的临界点的交叉。有趣的是,缺陷的密度不再由Kibble-Zurek标度描述,而是由系统的非普适拓扑特征决定。边缘状态被证明是强大的缺陷生产,这突出了它们的拓扑性质。

英文摘要:

We study the influence of topology on the quench dynamics of a system driven across a quantum critical point. We show how the appearance of certain edge states, which fully characterise the topology of the system, dramatically modifies the process of defect production during the crossing of the critical point. Interestingly enough, the density of defects is no longer described by the Kibble-Zurek scaling, but determined instead by the non-universal topological features of the system. Edge states are shown to be robust against defect production, which highlights their topological nature.

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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