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

DOI DOI Web Site Web Site BIBCODE 被引用文献29件 参考文献84件 オープンアクセス

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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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