The paper uses a spinor field-theory model with a periodic vector potential to rederive Chern number and Chern vector formulas and to construct an optical conductivity tensor.
quasi-Bloch states
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Chern insulators in two and three dimensions: A global perspective
The paper uses a spinor field-theory model with a periodic vector potential to rederive Chern number and Chern vector formulas and to construct an optical conductivity tensor.