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Bubbles in Brans-Dicke theory

D S Goldwirth and H W Zaglauer

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Using the thin-wall approximation the authors develop a scheme to describe the evolution of true vacuum bubbles in Jordan-Brans-Dicke theory. They find four possible configurations depending on the surface energy density. The type of bubbles and the time of nucleation determines whether the bubbles recollapse or grow and ultimately expand with the speed of light, which in turn depends on the particle theory and the nucleation process. The big bubbles problem of extended inflation is solved in the case where bubbles recollapse or where the nucleation radius is comparable to the horizon size.


PACS

98.80.Cq Particle-theory and field-theory models of the early Universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.)

04.20.-q Classical general relativity

MSC

83Cxx General relativity

83F05 Cosmology

Subjects

Gravitation and cosmology

Astrophysics and astroparticles

Dates

Issue 8 (August 1993)



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