Dynamics of false vacuum bubbles in Brans-Dicke theory

Details Dynamics of false vacuum bubbles in Brans-Dicke theory Dynamics of false vacuum bubbles in Brans-Dicke theory

2010-06-16

arxiv.org/abs/1006.3127v2

JCAP 1101:005,2011

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

29 pages, 20 figures

Scientific paper

10.1088/1475-7516/2011/01/005

We study the dynamics of false vacuum bubbles in the Brans-Dicke theory of gravity by using the thin shell or thin wall approximation. We consider a false vacuum bubble that has a different value for the Brans-Dicke field between the inside false vacuum region and the outside true vacuum region. Within a certain limit of field values, the difference of field values makes the effective tension of the shell negative. This allows new expanding false vacuum bubbles to be seen by the outside observer, which are disallowed in Einstein gravity.

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