Hi,
I am getting corrrect expression for Tr[DiracSlash[a].DiracSlash[a]].
I am using latest version Feyncalc of in Mathematica 4.0.
Purnendu
-- * ******************************************************************* * Senior Research Fellow-II, * * Theory Division, * * Saha Institute of Nuclear Physics * * Calcutta :: 700 064 * * * * URL--> http://theory.saha.ernet.in/~purnendu/purnendu.html * * * *********************************************************************On Thu, 7 Nov 2002, Roberto Sghedoni wrote:
> There's a bug in FeynCalc: it calculates Tr[DiracSlash[a].DiracSlash[a]] as > a^2 but the correct result is 4*a^2. > Instead the calculation of Tr[DiracSlash[a].DiracSlash[b]] is correct. > > > > ---------- > > Roberto Sghedoni > Dipartimento di Fisica dell'Università degli Studi di Parma > Parco Area delle Scienze 7/A > 43100 Parma > Tel. +39.0521.905493 > Fax +39.0521.905223 > e-mail: sghedoni@fis.unipr.it > web: www.fis.unipr.it/~sghedoni/ > >
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