"Graceful" Old Inflation
Astrophysics
2009-11-13 v2 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
We show that Inflation in a False Vacuum becomes viable in the presence of a spectator scalar field non minimally coupled to gravity. The field is unstable in this background, it grows exponentially and slows down the pure de Sitter phase itself, allowing then fast tunneling to a true vacuum. We compute the constraint from graceful exit through bubble nucleation and the spectrum of cosmological perturbations.
Keywords
Cite
@article{arxiv.astro-ph/0511396,
title = {"Graceful" Old Inflation},
author = {Fabrizio Di Marco and Alessio Notari},
journal= {arXiv preprint arXiv:astro-ph/0511396},
year = {2009}
}
Comments
17 pages, 3 figures