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arXiv 2203.01563cond-mat.str-el
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无序量子临界点处涌现的时空超对称性

Emergent space-time supersymmetry at disorder quantum critical point

Xue-Jia Yu, Peng-Lu Zhao, Shao-Kai Jian, Zhiming Pan

摘要:

研究了无序对(2+1)D Dirac半金属和(3+1)D Weyl半金属中在对密度波跃迁的量子临界点处出现的时空超对称性的影响.在(2+1)维Dirac半金属中,我们考虑了三种类型的无序,包括随机标量势、随机矢量势和随机质量势,而在(3+1)维Weyl半金属中没有随机质量无序.通过系统的重整化群分析,我们发现,由于无序势和汤川顶点之间的耦合,任何类型的弱随机无序都是无关的。因此,突现超对称对于弱随机势是稳定的。我们的工作将为探索现实凝聚态系统中的超对称性铺平道路。

英文摘要:

We study the effect of disorder on the spacetime supersymmetry that is proposed to emerge at the quantum critical point of pair density wave transition in (2+1)D Dirac semimetals and (3+1)D Weyl semimetals. In the (2+1)D Dirac semimetal, we consider three types of disorder, including random scalar potential, random vector potential and random mass potential, while the random mass disorder is absent in the (3+1)D Weyl semimetal. Via a systematic renormalization group analysis, we find that any type of weak random disorder is irrelevant due to the couplings between the disorder potential and the Yukawa vertex. The emergent supersymmetry is thus stable for weak random potentials. Our work will pave the way for exploration supersymmetry in realistic condensed matter systems.

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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