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feat: Npr_matrix.g5H now makes use of gamma5 hermiticity property of the

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propagator
This commit is contained in:
Fabian Joswig 2021-11-18 12:39:32 +00:00
parent 976d9c3f29
commit cedceced61
1 changed files with 3 additions and 6 deletions
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9
pyerrors/npr.py
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@ -20,13 +20,10 @@ class Npr_matrix(np.ndarray):
def g5H(self):
"""Gamma_5 hermitean conjugate
Returns gamma_5 @ M.T.conj() @ gamma_5 and exchanges in and out going
momenta. Works only for 12x12 matrices.
Uses the fact that the propagator is gamma5 hermitean, so just the
in and out momenta of the propagator are exchanged.
"""
if self.shape != (12, 12):
raise Exception('g5H only works for 12x12 matrices.')
extended_g5 = np.kron(np.eye(3, dtype=int), gamma5)
return Npr_matrix(matmul(extended_g5, self.conj().T, extended_g5),
return Npr_matrix(self,
mom_in=self.mom_out,
mom_out=self.mom_in)