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Parity anomaly with impurities and the Pauli--Villars subtraction
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Parity anomaly with impurities and the Pauli--Villars subtraction
classification
hep-th
cond-mat.mes-hall
keywords
impuritiespauli--villarsanomalousanomalyarbitrarycalculateconsequencesconsider
read the original abstract
We calculate the anomalous part of the polarization tensor of Dirac fermions in $2+1$ dimensions in the presence of impurities described by the scattering rate $\Gamma$ for arbitrary external frequency and momenta. We consider two different versions of the Pauli--Villars subtractions and discuss their physical consequences.
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