# The Sym2Int program: going from symmetries to interactions

## TL;DR

The paper introduces Sym2Int, a program that automates the process of generating all possible interactions in a Lagrangian based on given field representations and symmetries, aiding model building in theoretical physics.

## Contribution

The paper presents a new software tool that systematically enumerates interactions from symmetry representations, streamlining the construction of Lagrangians in particle physics models.

## Key findings

- Automates the generation of interaction terms from symmetry representations.
- Reduces manual effort and potential errors in model building.
- Facilitates exploration of possible theories with given symmetry constraints.

## 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.