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FeynmanParameter and Trace--Programs for Expressing Feynman Amplitudes as Integrals over Feynman Parameters
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| Organization: | Theory Group, Department of Physics, University of Texas |
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| Computer Physics Communications |
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We present two Mathematica programs, FeynmanParameter and trace, that automate the evaluation of Feynman diagrams with loops. FeynmanParameter converts integrals over loop momenta into integrals over Feynman parameters. If the input for FeynmanParameter contains any traces these are first evaluated by the program trace. Both trace and FeynmanParameter can work in an arbitrary number of dimensions, if desired--even if the traces to be evaluated contain gamma5's.
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