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cond-mat.str-el2004
A Characterization of Topological Insulators: Chern Numbers for a Ground State Multiplet
Yasuhiro Hatsugai
We propose to use generic Chern numbers for a characterization of topological insulators. It is suitable for a numerical characterization of low dimensional quantum liquids where s…
cond-mat.mes-hall2004
Explicit Gauge Fixing for Degenerate Multiplets: A Generic Setup for Topological Orders
Yasuhiro Hatsugai
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 intr…