Complex Hybrid Inflation and Baryogenesis
Urena-Lopez, L. Arturo
High Energy Physics - Phenomenology | Astrophysics | High Energy Physics - Theory
arxiv: Computer Science::Software Engineering | Computer Science::Hardware Architecture
We propose a hybrid inflation model with a complex waterfall field which contains an interaction term that breaks the U(1) global symmetry associated to the waterfall field charge. We show that the asymmetric evolution of the real and imaginary parts of the complex field during the phase transition at the end of inflation translates into a charge asymmetry. The latter strongly depends on the vev of the waterfall field, which is well constrained by diverse cosmological observations.