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The point-splitting regularization of (2+1)d parity breaking models
classification
✦ hep-th
cond-mat
keywords
point-splittingregularizationbreakingparityactionadditionalambiguitiesarise
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The coefficient of the Chern-Simons term in the effective action for massive Dirac fermions in three dimensions is computed by using the point-splitting regularization method. We show that in this framework no ambiguities arise. This is related to the fact that the point-splitting regularization does not introduce additional parity breaking effects, implementing one possible physical criterion in order to uniquely characterize the system.
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