Name: zwhuang Date: 04/16/03-07:42:27 AM Z
I don’t know how to input a single gamma matrix such as \gamma^0,
\gamma^1 and so on. In physics, the square of \gamma^0 satisfies
(\gamma^0)^2 = 1. However, if I input
“GA[LorentzIndex[0]]”, I find that
“DiracSimplify[GA[LorentzIndex[0],LorentzIndex[0]]”
is equal to 4, and if I input “GA[0]”, I find that
“DiracSimplify[GA[0,0]” is equal to
“DiracGamma(0).DiracGamma(0)”, which is not I expect.
Why I can not conduct \gammma^0 like \gamma^5? We can see that
“DiracSimplify[GA[5, 5]]” is exactly equal to 1! It’s
wonderful.
I want to find a command for \gamma^0 matrix which works like the
\gamma^5 case. But I can not find the way. So I really want to get help
from you.