Gravitational-Wave Mediated Preheating
General Relativity and Quantum Cosmology
2015-05-11 v2 High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
We propose a new preheating mechanism through the coupling of the gravitational field to both the inflaton and matter fields, without direct inflaton-matter couplings. The inflaton transfers power to the matter fields through interactions with gravitational waves, which are exponentially enhanced due to an inflation-graviton coupling. One such coupling is the product of the inflaton to the Pontryagin density, as in dynamical Chern-Simons gravity. The energy scales involved are constrained by requiring that preheating happens fast during matter domination.
Cite
@article{arxiv.1405.4288,
title = {Gravitational-Wave Mediated Preheating},
author = {Stephon Alexander and Sam Cormack and Antonino Marcianò and Nicolás Yunes},
journal= {arXiv preprint arXiv:1405.4288},
year = {2015}
}
Comments
6 pages, 2 figures