Name: Kaibao Date: 06/18/13-05:18:40 AM Z
On FeynCalc8.02
Input: Tr[GA[5].DiracSlash[p].GA[u].DiracSlash[k].GA[v]]
Output: -4 i \[Epsilon]^(uvkp)
The right answer is: -4 i \[Epsilon]^(uvab)(k_a)(p_b)
In the result, p and k are absorbed to the index of the tensor \[Epsilon]!!