Stabilising the Planck mass shortly after inflation
Cosmology and Nongalactic Astrophysics
2015-06-10 v2 High Energy Physics - Theory
Abstract
We consider a model of the early universe which consists of two scalar fields: the inflaton, and a second field which drives the stabilisation of the Planck mass (or gravitational constant). We show that the non-minimal coupling of this second field to the Ricci scalar sources a non-adiabatic pressure perturbation. By performing a fully numerical calculation we find, in turn, that this boosts the amplitude of the primordial power spectrum after inflation.
Cite
@article{arxiv.1503.06490,
title = {Stabilising the Planck mass shortly after inflation},
author = {Carsten van de Bruck and Adam J. Christopherson and Mathew Robinson},
journal= {arXiv preprint arXiv:1503.06490},
year = {2015}
}
Comments
13 pages, 5 figs; v2: version to appear in PRD