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]!!
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