Name: Sharaz Date: 03/25/05-06:31:59 PM Z
Hello, I have just worked with FeynCalc, and I ran into a problem.
If I have an expression, say a combination of different momente - external - incomming as well as outgoing - for a fermionic feynman diagram, and i wish to use the Dirac equation for the diagram to reduce the expression -
how do I get RID of the spinors Ive introduced to simplify the expression? It seems impossible to rid of the Spinors once you’ve introduced them
-————–
A very simple example of the problem:
SpinorUbar[p1,m].(DS[p]+DS[q]-m).SpinorUbar[p2,m]
= SpinorUbar[p1,m].DS[q].SpinorUbar[p2,m]
Now how do you remove the spinors? If you have a very big expression - it wont be possible to remove them manually!