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DiracG5

DiracG5 or γ5
represents the fifth Dirac gamma matrix

Details and OptionsDetails and Options

  • DiracG5 is recognized as an object in spinor space by Spur and FermionLineExpand.
  • DiracG5 can be entered in StandardForm as γ5 using EscgEsc5 (the '5' should not be set in subscript position).
  • DiracG5 anticommutes with all other gamma matrices (naive implementation of dimensional regularization).

ExamplesExamplesopen allclose all

Basic Examples  (2)Basic Examples  (2)

Take the trace of with various gamma matrices:

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Out[1]=
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All objects in spinor space should be entered inside Spur or DiracMatrix. Otherwise, symbols outside Spur or DiracMatrix are always assumed to commute, and can lead to surprising results:

In[1]:=
Click for copyable input
Out[1]=
In[2]:=
Click for copyable input
Out[2]=