Complex Hybrid Inflation and Baryogenesis

Details Complex Hybrid Inflation and Baryogenesis Complex Hybrid Inflation and Baryogenesis

2006-09-08

arxiv.org/abs/hep-ph/0609086v2

Phys.Rev.Lett.98:161302,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 RevTex pages, no figures. Changes made in response to referee's comments; matches version published in Phys.Rev.Lett

Scientific paper

10.1103/PhysRevLett.98.161302

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.

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