Enhanced (p)reheating in DBI Inflation
High Energy Physics - Theory
2009-08-31 v1 Cosmology and Nongalactic Astrophysics
High Energy Physics - Phenomenology
Abstract
We study preheating in DBI hybrid inflation. Preheating occurs since the matter fields are non-minimally coupled to the inflaton. Despite the coupling being small, preheating happens as a narrow parametric resonance in which matter fields and inflaton modes are exponentially created. We show that, within the approximations used, the process is very efficient at late times. The resonance stage gives way to the decay of the inflaton into bosonic or fermionic degrees of freedom and the corresponding reheating temperature is determined.
Cite
@article{arxiv.0908.4217,
title = {Enhanced (p)reheating in DBI Inflation},
author = {A. C. Davis and Raquel H. Ribeiro},
journal= {arXiv preprint arXiv:0908.4217},
year = {2009}
}
Comments
21 pages