A note on inflationary scenario with non-minimal coupling
High Energy Physics - Phenomenology
2013-01-10 v2 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
We consider first order perturbation theory for a non-minimally coupled inflaton field without assuming an adiabatic equation of state. In general perturbations in non-minimally coupled theory may be non-adiabatic. However under the slow-roll assumptions the perturbation theory may look like adiabatic one. We show in the frame-work of perturbation theory, that our results of spectral index and bound on no-minimal coupling parameter agree with the results obtained using the adiabatic equation of state by the earlier authors.
Keywords
Cite
@article{arxiv.1208.3298,
title = {A note on inflationary scenario with non-minimal coupling},
author = {Abhishek Basak and Jitesh R. Bhatt},
journal= {arXiv preprint arXiv:1208.3298},
year = {2013}
}
Comments
6 pages, no figure, title, abstract and conclusion are changed, corrected some of the previous results