Name: Lingxiao X (email_not_shown)
Date: 11/26/14-02:42:57 PM Z


Hi,
    Thanks for all the help!
    So my real problem is how to modify the code which I posted in my first message to prevent all these trivial contractions of LeviCivita tensors from appearing. Since for the process which I want to evaluate, 9 terms would come out. I just don't want to replace the trivial LeviCivita tensors one by one.
    Furthermore, after checking FeynCalc manual, I think the function EpsEvaluate might help. But it doesn't work correctly. For example,
"LC[][p1, p2, p3, p1 + p2] // EpsEvaluate"‍
gives" -\[Epsilon]^(p1p2p1+p2p3) " rather than" -\[Epsilon]^(p1p2p1p3)+‍-\[Epsilon]^(p1p2p2p3)".‍‍


 I am using FeynCalc 8.2.0 with Mathematica 9.0 on Win7(64bits).
Thanks for more help.


Best Regards!
Lingxiao



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