The Sym2Int program: going from symmetries to interactions

Abstract

Model builders often need to find the most general Lagrangian which can be constructed from a given list of fields. These fields are actually representations of the Lorentz and gauge groups (and maybe of some discrete symmetry group as well). I will describe a simple program (Sym2Int) which helps to automate this task by listing all possible interactions between Lorentz/gauge group representations.

Comments: Contribution to the proceedings of the Fifth Symposium on Prospects in the Physics of Discrete Symmetries (DISCRETE 2016), Warsaw, Poland, 28 November - 3 December 2016. The computer program is available on http://renatofonseca.net/sym2int.php