"Graceful" Old Inflation

Details "Graceful" Old Inflation "Graceful" Old Inflation

2005-11-14

arxiv.org/abs/astro-ph/0511396v2

Phys.Rev.D73:063514,2006

Astronomy and Astrophysics

Astrophysics

17 pages, 3 figures

Scientific paper

10.1103/PhysRevD.73.063514

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.

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