Package for Calculations and Simplifications of Expressions with Dirac Matrixes (MatrixExp)

Details Package for Calculations and Simplifications of Expressions with Dirac Matrixes (MatrixExp) Package for Calculations and Simplifications of Expressions with Dirac Matrixes (MatrixExp)

2005-07-07

arxiv.org/abs/hep-ph/0507080v1

Comput.Phys.Commun. 170 (2005) 287-295

Physics

High Energy Physics

High Energy Physics - Phenomenology

Scientific paper

10.1016/j.cpc.2005.06.002

This paper describes a package for calculations of expressions with Dirac matrixes. Advantages to existing similar packages are described. MatrixExp package is intended for simplification of complex expressions involving $\gamma$-matrixes, providing such tools as automatic Feynman parameterization, integration in $d$-dimensional space, sorting and grouping of results in a given order. Also, in comparison with existing similar package Tracer, presented package MatrixExp has more enhanced input possibility. User-available functions of MatrixExp package are described in detail. Also an example of calculation of Feynman diagram for process $b\to s\gamma g$ with application of functions of MatrixExp package is presented.

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