论文标题
三阶拓扑绝缘子的签名指数
A signature index for third order topological insulators
论文作者
论文摘要
在这项工作中，我们开发了一个索引签名，该索引签名表征了3D系统中的三阶拓扑阶段。该指数是3D角处Higgs三重态的单一特征的交替总和。我们将我们的方法扩展到具有开放界限的N维系统，并证明可以有效地将拓扑不变性概括到任何空间维度，包括二阶拓扑绝缘子。恢复了较低维系统的已知结果，并给出了HIGGS空间参数中的解释。
In this work, we develop an index signature characterising the third order topological phases in 3D systems. This index is an alternating sum of monomial signatures of Higgs triplet values at 3D corners. We extend our method to N-dimensional systems with open boundaries, and demonstrate that the topological invariant can be efficiently generalised to any space dimension including the second order topological insulators. Known results on lower dimensional systems are recovered and an interpretation in the Higgs space parameters is given.
