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https://hdl.handle.net/2440/129983
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Type: | Journal article |
Title: | On spectral flow and Fermi arcs |
Author: | Thiang, G.C. |
Citation: | Communications in Mathematical Physics, 2021; 385(1):465-493 |
Publisher: | Springer-Verlag |
Issue Date: | 2021 |
ISSN: | 0010-3616 1432-0916 |
Statement of Responsibility: | Guo Chuan Thiang |
Abstract: | We introduce spectral flow techniques to explain why the Fermi arcs of Weyl semimetals are topologically protected against boundary condition changes and perturbations. We first analyse the topology of a certain universal space of self-adjoint half-line massive Dirac Hamiltonians, and then exploit its non-trivial and homotopy invariant spectral flow structure by pulling it back to generic Weyl semimetal models. The homological perspective of using Dirac strings/Euler chains as global topological invariants of Weyl semimetals/Fermi arcs, is thereby analytically justified. |
Description: | Published online: 8 February 2021 |
Rights: | © The Author(s), under exclusive licence to Springer-Verlag GmbH, DE part of Springer Nature 2021 |
DOI: | 10.1007/s00220-021-04007-z |
Grant ID: | http://purl.org/au-research/grants/arc/DE170900149 http://purl.org/au-research/grants/arc/DP200100729 |
Published version: | http://dx.doi.org/10.1007/s00220-021-04007-z |
Appears in Collections: | Aurora harvest 8 Physics publications |
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