Quasi-Single Field Inflation with Large Mass
High Energy Physics - Theory
2015-06-04 v2 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
We study the effect of massive isocurvaton on density perturbations in quasi-single field inflation models, when the mass of the isocurvaton M becomes larger than the order of the Hubble parameter H. We analytically compute the correction to the power spectrum, leading order in coupling but exact for all values of mass. This verifies the previous numerical results for the range 0<M<3H/2 and shows that, in the large mass limit, the correction is of order H^2/M^2.
Cite
@article{arxiv.1205.0160,
title = {Quasi-Single Field Inflation with Large Mass},
author = {Xingang Chen and Yi Wang},
journal= {arXiv preprint arXiv:1205.0160},
year = {2015}
}
Comments
19 pages, 6 figures; v2: minor revision