Dynamics of false vacuum bubbles in Brans-Dicke theory
arXiv:1006.3127 · doi:10.1088/1475-7516/2011/01/005
Abstract
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.
29 pages, 20 figures
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