Inflationary Phase in Brans-dicke Cosmology With a Cosmological Constant

Berman, Marcelo S.

doi:10.1016/0375-9601(89)90376-9

Inflationary Phase in Brans-dicke Cosmology With a Cosmological Constant

Marcelo S. Berman
(
- Florida U.
)

1989

3 pages

Published in:

Phys.Lett.A 142 (1989) 335-337

DOI:

10.1016/0375-9601(89)90376-9

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Abstract: (Elsevier)

It has been shown earlier that, for a perfect fluid, a perfect gas law of state, and the Robertson-Walker metric, an exponential phase in Brans-Dicke cosmology is possible, with both positive pressure and density, but not with the violated energy condition p = − ρ . We demonstrate in this paper that the inclusion of a cosmological constant into the theory does not change that picture.