False vacuum decay with gravity in a critical case

Details False vacuum decay with gravity in a critical case False vacuum decay with gravity in a critical case

2005-04-27

arxiv.org/abs/gr-qc/0504133v2

Int.J.Theor.Phys.46:652-663,2007

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages, 8 figures, minor changes done

Scientific paper

10.1007/s10773-006-9227-8

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.

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