FEYN CALC SYMBOL

SUNDelta


is the Kronecker-delta for SU(N) with color indices a and b.

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]=
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]//StandardForm=
In[6]:=
Click for copyable input
Out[6]//StandardForm=
In[7]:=
Click for copyable input
Out[7]//StandardForm=
Symbolic arguments to SUNDelta are transformed into the data type SUNIndex and integer arguments are transformed to ExplicitSUNIndex. The difference is that SUNSimplify will only sum over symbolic indices.
In[8]:=
Click for copyable input
Out[8]=
In[9]:=
Click for copyable input
Out[9]//StandardForm=
In[10]:=
Click for copyable input
Out[10]//StandardForm=