arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2001.06611hep-th
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全息量子奇点

Holographic quantum singularity

Izumi Tanaka

摘要:

在这项研究中,我们解析地考虑了三维Weyl半金属中的位错及其全息模型。起源于位错的量子奇点在动量空间中产生了一个缺陷。这个缺陷导致拓扑保护的零能量模式绑定到量子奇点。该缺陷有两个方面:第一,它阻止了拓扑缠绕数的形成。其次,它提供了围绕自身的另一个拓扑数。规范场调节缺陷的这些效应,并且有可能控制相变。此外,从全息对偶,量子奇点映射到经典引力的畴壁。我们发现畴壁破坏了体时空的规范不变性。我们还证明了量子奇异性与体时空的规范不变性破缺的异常相当,全息纠缠熵揭示了编码在动量空间缺陷中的信息。

英文摘要:

In this study, we have analytically considered a dislocation in three-dimensional Weyl semimetal and its holographic model. A quantum singularity that originated in the dislocation creates a defect in momentum space. This defect causes topologically protected zero-energy mode bound to the quantum singularity. The defect has two aspects: First, it prevents the formation of a topological winding number. Second, it provides another topological number around itself. The gauge field adjusts these effects of the defect, and it is possible to control the phase transition. Further, from holographic duality, the quantum singularity is mapped onto a domain wall of classical gravity. We find that the domain wall causes a violation of gauge invariance of bulk spacetime. We also demonstrate that the quantum singularity is comparable to the anomaly from the gauge invariance breaking of the bulk spacetime, and holographic entanglement entropy reveals the information encoded in the defect of momentum space.

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