FeynmanParameter and Trace: Programs for expressing Feynman amplitudes as integrals over Feynman parameters

West, Todd H.

doi:10.1016/0010-4655(93)90011-Z

FeynmanParameter and Trace: Programs for expressing Feynman amplitudes as integrals over Feynman parameters

Todd H. West
(
- Texas U.
)

Dec 2, 1991

21 pages

Published in:

Comput.Phys.Commun. 77 (1993) 286-298

DOI:

10.1016/0010-4655(93)90011-Z

Report number:

UTTG-33-91

View in:

ADS Abstract Service

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Abstract: (Elsevier)

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 γ 5 's.

Feynman graph: higher-order
Feynman graph: parametrization
field theory: any-dimensional
anomaly: axial
W: electric moment
programming
numerical calculations

References(5)

Figures(0)

Regularization and Renormalization of Gauge Fields

Gerard 't Hooft
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,
M.J.G. Veltman
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C.G. Bollini
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,
J.J. Giambiagi
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)

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FeynmanParameter and Trace: Programs for expressing Feynman amplitudes as integrals over Feynman parameters

Citations per year

Regularization and Renormalization of Gauge Fields

Dimensional Renormalization and the Action Principle

Axial vector vertex in spinor electrodynamics

A PCAC puzzle: π0→γγ\pi^0 \to \gamma \gammaπ0→γγ in the σ\sigmaσ model

Evanescent couplings and compensation of adler anomaly

A PCAC puzzle: $\pi^0 \to \gamma \gamma$ in the $\sigma$ model