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Bianchi V inflation in the Brans-Dicke theory?

Jorge L Cervantes-Cota

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Some exact solutions in the Brans-Dicke (BD) theory are shown for a Bianchi V metric having the properties of inflationary expansion, graceful exit and asymptotic evolution to a Friedmann-Robertson-Walker open model. It is remarkable that inflationary behaviour can occur, even without a cosmological potential or constant. However, the horizon and flatness problems cannot be solved within the standard BD theory because the inflationary period is severely restricted by the value of the BD parameter omega.


PACS

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

MSC

85A40 Cosmology (For relativistic cosmology, see 83F05)

Subjects

Gravitation and cosmology

Astrophysics and astroparticles

Dates

Issue 12 (December 1999)

Received 22 March 1999, in final form 26 August 1999



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