arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2103.12359cond-mat.mes-hallcond-mat.supr-con
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光谱体边界对应的推广

Generalization of spectral bulk-boundary correspondence

Shun Tamura, Shintaro Hoshino, Yukio Tanaka

摘要:

在一维中的体-边界对应性断言,在体中和在边缘处定义的物理量是连接的,正如在电极化的强度的论证中所确立的那样。最近,谱体边界对应(SBBC),一个扩展版本的传统体边界对应的能量依赖的谱函数,如格林函数,已被提出在手征对称系统,其中手征运营商与哈密顿反交换。在这项研究中,我们扩展的SBBC系统的杂质散射和动力学自能,无论存在或不存在的差距,在能谱。此外,观察到SBBC甚至在没有手征对称性的系统中也成立,这基本上推广了它的概念。SBBC的具体模型,如超导纳米线和苏-施里弗-希格模型证明。它的潜在应用和某些剩余的问题进行了讨论。

英文摘要:

The bulk-boundary correspondence in one dimension asserts that the physical quantities defined in the bulk and at the edge are connected, as well established in the argument for electric polarization. Recently, a spectral bulk-boundary correspondence (SBBC), an extended version of the conventional bulk-boundary correspondence to energy-dependent spectral functions, such as Green's functions, has been proposed in chiral symmetric systems, in which the chiral operator anticommutes with the Hamiltonian. In this study, we extend the SBBC to a system with impurity scattering and dynamical self-energies, regardless of the presence or absence of a gap in the energy spectrum. Moreover, the SBBC is observed to hold even in a system without chiral symmetry, which substantially generalizes its concept. The SBBC is demonstrated with concrete models, such as superconducting nanowires and a Su-Schrieffer-Heeger model. Its potential applications and certain remaining issues are also discussed.

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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