FEYN CALC SYMBOL

DiracMatrix


denotes a Dirac gamma matrix with Lorentz index mu. DiracMatrix[mu,nu, ...] is a product of gamma matrices with Lorentz indices mu, nu, ... DiracMatrix[5] is gamma^5. DiracMatrix[6] is 1/2 + gamma^5/2. DiracMatrix[7] is 1/2 - gamma^5/2.

ExamplesExamplesopen allclose all

Basic Examples  (1)Basic Examples  (1)

In[1]:=
Click for copyable input
Out[1]=
In[2]:=
Click for copyable input
Out[2]=
This is how to enter the non-commutative product of two Null. The Mathematica Dot "." is used as non-commutative multiplication operator.
In[3]:=
Click for copyable input
Out[3]=
In[4]:=
Click for copyable input
Out[4]//StandardForm=
In[5]:=
Click for copyable input
Out[5]=
In[6]:=
Click for copyable input
Out[6]//StandardForm=
In[7]:=
Click for copyable input
Out[7]=
In[8]:=
Click for copyable input
Out[8]//StandardForm=
In[9]:=
Click for copyable input
Out[9]=
In[10]:=
Click for copyable input
Out[10]=
In[11]:=
Click for copyable input
Out[11]//StandardForm=