Gravitational Particle Production in Gravity Theories with Non-minimal Derivative Couplings
General Relativity and Quantum Cosmology
2015-06-16 v2 High Energy Physics - Theory
Abstract
We study the gravitational production of heavy X-particles of mass of the order of the inflaton mass, produced after the end of inflation. We find that, in the presence of a derivative coupling of the inflaton field or of the X-field to the Einstein tensor, the number of gravitationally produced particles is suppressed as the strength of the coupling is increased.
Keywords
Cite
@article{arxiv.1305.5741,
title = {Gravitational Particle Production in Gravity Theories with Non-minimal Derivative Couplings},
author = {George Koutsoumbas and Konstantinos Ntrekis and Eleftherios Papantonopoulos},
journal= {arXiv preprint arXiv:1305.5741},
year = {2015}
}
Comments
23 pages, 12 figures, version to be published in JCAP