2006/09/30 by David Delepine, D. Delépine, Carlos Martinez +3 · 1 citation
Earth and Planetary Sciences · Physics and Astronomy · #Cosmology and Gravitation Theories #Geophysics and Gravity Measurements #Solar and Space Plasma Dynamics #astro-ph #hep-ph #hep-th
paper · pdf · doi:10.1103/physrevlett.98.161302
published as Phys.Rev.Lett.98:161302,2007 · 4 RevTex pages, no figures. Changes made in response to referee's comments; matches version published in Phys.Rev.Lett
openalex publication_date 2007/04/17 · arxiv created 2007/04/24 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We propose a hybrid inflation model with a complex waterfall field which contains an interaction term that breaks the U(1) global symmetry associated with 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 vacuum expectation value of the waterfall field, which is well constrained by diverse cosmological observations.