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arXiv 1504.04233cond-mat.str-elquant-ph
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相互作用费米子微观模型中的拓扑态

Topological states in a microscopic model of interacting fermions

Nicolai Lang, Hans Peter Büchler

摘要:

我们提出了一个相互作用费米子的微观模型,其中的基态简并是拓扑保护的。该模型是基于一个双线设置与局部相互作用的粒子数守恒设置。这个模型的一个引人注目的性质是它的基态和低能激发的精确可解性。我们展示了拓扑保护边缘状态的外观,并在微观水平上推导出它们的编织特性。我们发现了Ising任意子的非阿贝尔统计,这可以解释为Majorana类边缘态。

英文摘要:

We present a microscopic model of interacting fermions where the ground state degeneracy is topologically protected. The model is based on a double-wire setup with local interactions in a particle number conserving setting. A compelling property of this model is the exact solvability for its ground states and low energy excitations. We demonstrate the appearance of topologically protected edge states and derive their braiding properties on a microscopic level. We find the non-abelian statistics of Ising anyons, which can be interpreted as Majorana-like edge states.

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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