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Explicit Gauge Fixing for Degenerate Multiplets: A Generic Setup for Topological Orders

Yasuhiro Hatsugai
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Abstract

We supply basic tools for the study of the topological order of a multiplet which is an eigenspace of a finite-dimensional normal operator with continuous parameters. We allow intrinsic degeneracies within the multiplet where a well-known standard procedure does not work. As an important example, we give novel expressions for a spin Hall conductance for unitary superconductors with equal spin pairing. Generic topological orders will be treated in this unified manner particularly with nontrivial topological degeneracies.

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Yasuhiro Hatsugai. 2004-11-29. Explicit Gauge Fixing for Degenerate Multiplets: A Generic Setup for Topological Orders. https://doi.org/10.1143/jpsj.73.2604

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