False vacuum decay with gravity in a critical case
General Relativity and Quantum Cosmology
2008-11-26 v2
Abstract
The vacuum decay in a de Sitter universe is studied within semiclassical approximation for the class of effective inflaton potentials whose curvature at the top is close to a critical value. By comparing the actions of the Hawking - Moss instanton and the Coleman - de Luccia instanton(s) the mode of vacuum decay is determined. The case when the fourth derivative of the effective potential at its top is less than a critical value is discussed.
Keywords
Cite
@article{arxiv.gr-qc/0504133,
title = {False vacuum decay with gravity in a critical case},
author = {Michal Demetrian},
journal= {arXiv preprint arXiv:gr-qc/0504133},
year = {2008}
}
Comments
10 pages, 8 figures, minor changes done