xTras: A field-theory inspired xAct package for mathematica
Abstract
We present the tensor computer algebra package xTras, which provides functions and methods frequently needed when doing (classical) field theory. Amongst others, it can compute contractions, make Ansätze, and solve tensorial equations. It is built upon the tensor computer algebra system xAct, a collection of packages for Mathematica.
- Publication:
-
Computer Physics Communications
- Pub Date:
- June 2014
- DOI:
- 10.1016/j.cpc.2014.02.006
- arXiv:
- arXiv:1308.3493
- Bibcode:
- 2014CoPhC.185.1719N
- Keywords:
-
- Mathematica;
- Computer algebra;
- Tensor calculus;
- Field theory;
- Combinatorics;
- General relativity;
- Riemann tensor;
- Young tableaux;
- Computer Science - Symbolic Computation;
- Computer Science - Mathematical Software;
- General Relativity and Quantum Cosmology;
- High Energy Physics - Theory
- E-Print:
- 29 pages. The package can be downloaded from http://www.xact.es/xtras/
