期刊
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
卷 73, 期 10, 页码 2604-2607出版社
PHYSICAL SOC JAPAN
DOI: 10.1143/JPSJ.73.2604
关键词
chem numbers; degeneracy; topological orders
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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