The bulk-dislocation correspondence for weak topological insulators on screw-dislocated lattices

DOI10.1088/1751-8121/AC190CzbMATH Open1520.81111arXiv2103.13277MaRDI QIDQ6363638

Publication date: 24 March 2021

Abstract: A weak topological insulator in dimension

3

is known to have a topologically protected gapless mode along the screw dislocation. In this paper we formulate and prove this fact with the language of C*-algebra K-theory. The proof is based on the coarse index theory of the helical surface.

Mathematics Subject Classification ID

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