Physical interpretation of Parity?

In summary: But they still preserve the parity of the fermions, because that's the only way to get a faithful representation of L with no massless fermions!In summary, massive fermions can violate parity by transforming only (1/2, 0) or (0,1/2), but they still preserve the parity of the fermions.
  • #36
I noticed that most of my contributions in this thread are wrong in diverse details, misreadings, misconceptions, etc... I would prefer to delete all of them, it is not possible, so let me alert to the reader to not to believe any of my comments here. I will try to straight some comment on volume forms, parity, chirality, minkowski and euclidean, but it will be elsewhere and "elsewhen".
 

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