肖孟
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其他联系方式
邮编：430072
通讯/办公地址：物理科学与技术学院，D303
邮箱：phmxiao@whu.edu.cn
论文
Exact universal characterization of chiral-symmetric higher-order topological phases
- 发布时间：2026-03-16
- 点击次数：
- 发表刊物：Newton
- 摘要：Utilizing a series of Bott indices formulated through polynomials of position operators, we establish a comprehensive framework for characterizing topological zero-energy corner states in systems with chiral symmetry. Our framework covers systems with arbitrary shape, including topological phases that are not characterizable by previously proposed invariants such as multipole moments or multipole chiral numbers. A key feature of our framework is its ability to capture the real-space pattern of zero-energy corner states. We provide a rigorous analytical proof of its higher-order correspondence. To demonstrate the effectiveness of our theory, we examine several model systems with representative patterns of zero-energy corner states that previous frameworks fail to classify.
- 卷号：2
- 页面范围：100406
- 是否译文：否
- 发表时间：2026-02-12