ULYSSES: Universal LeptogeneSiS Equation Solver

Published: 16-02-2021| Version 1 | DOI: 10.17632/rzd24f34h2.1
A. Granelli,
K. Moffat,
Y.F. Perez-Gonzalez,
H. Schulz,
J. Turner


ULYSSES is a python package that calculates the baryon asymmetry produced from leptogenesis in the context of a type-I seesaw mechanism. The code solves the semi-classical Boltzmann equations for points in the model parameter space as specified by the user. We provide a selection of predefined Boltzmann equations as well as a plugin mechanism for externally provided models of leptogenesis. Furthermore, the ULYSSES code provides tools for multi-dimensional parameter space exploration. The emphasis of the code is on user flexibility and rapid evaluation. It is publicly available at https://github.com/earlyuniverse/ulysses.