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arXiv 1301.7449cond-mat.str-elcond-mat.mes-hallcond-mat.supr-conhep-th
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拓扑相边界处涌现的时空超对称性

Emergent Space-time Supersymmetry at the Boundary of a Topological Phase

Tarun Grover, D. N. Sheng, Ashvin Vishwanath

摘要:

与普通对称性不同,超对称性交换了玻色子和费米子。它最初被认为是我们宇宙的对称性,但仍有待实验验证。在这里,我们从理论上表明,超对称性自然出现在拓扑超导体,这是众所周知的凝聚态系统。具体来说,我们认为,在二维和三维的拓扑超导体的边界处的量子相变显示超对称性时,在长距离和时间探测。超对称性为这些系统带来了几个实验结果,例如,在不同实验中测量的量之间的精确关系,以及在某些情况下,普适临界指数的精确知识。拓扑表面态本身可以被解释为自发破缺的超对称性,表明拓扑相位和超对称性之间的深刻关系。我们讨论了在超流He $_3$ -B薄膜中实验实现的前景。

英文摘要:

In contrast to ordinary symmetries, supersymmetry interchanges bosons and fermions. Originally proposed as a symmetry of our universe, it still awaits experimental verification. Here we theoretically show that supersymmetry emerges naturally in topological superconductors, which are well-known condensed matter systems. Specifically, we argue that the quantum phase transitions at the boundary of topological superconductors in both two and three dimensions display supersymmetry when probed at long distances and times. Supersymmetry entails several experimental consequences for these systems, such as, exact relations between quantities measured in disparate experiments, and in some cases, exact knowledge of the universal critical exponents. The topological surface states themselves may be interpreted as arising from spontaneously broken supersymmetry, indicating a deep relation between topological phases and SUSY. We discuss prospects for experimental realization in films of superfluid He$_3$-B.

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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