FEYN CALC SYMBOL

PolarizationVector


gives a polarization vector.

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]=
A polarization vector epsilon_mu(k)is a special four-vector.
In[3]:=
Click for copyable input
Out[3]//StandardForm=
The transverality property is not automatic.
In[4]:=
Click for copyable input
Out[4]=
In[5]:=
Click for copyable input
Out[5]=
In[6]:=
Click for copyable input
Out[6]=
In[7]:=
Click for copyable input
Out[7]=
Depending on the alphabetical ordering of the momenta, simplifcations are done - e.g.
-(k-p-k)^muepsilon_mu(k-p)=k^muepsilon_mu(k-p)=k.(epsilon(k-p)).
In[8]:=
Click for copyable input
Out[8]=
In[9]:=
Click for copyable input
Out[9]=
In[10]:=
Click for copyable input