Massless Fileds in Scalar-Tensor Cosmologies

Details Massless Fileds in Scalar-Tensor Cosmologies Massless Fileds in Scalar-Tensor Cosmologies

1994-05-10

arxiv.org/abs/gr-qc/9405025v1

Phys.Rev.D51:477-489,1995

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

24 pages (5 figures available on request from dwands@star.susx.ac.uk), LaTeX with REVTeX macros, SUSSEX-AST-94/4-1

Scientific paper

10.1103/PhysRevD.51.477

We derive exact Friedmann--Robertson--Walker cosmological solutions in general scalar--tensor gravity theories, including Brans--Dicke gravity, for stiff matter or radiation. These correspond to the long or short wavelength modes respectively of massless scalar fields. If present, the long wavelength modes of such fields would be expected to dominate the energy density of the universe at early times and thus these models provide an insight into the classical behaviour of these scalar--tensor cosmologies near an initial singularity, or bounce. The particularly simple exact solutions also provide a useful example of the possible evolution of the Brans--Dicke (or dilaton) field, $\phi$, and the Brans--Dicke parameter, $\omega(\phi)$, at late times in spatially curved as well as flat universes. We also discuss the corresponding solutions in the conformally related Einstein metric.

Affiliated with

Also associated with

No associations

Rating

Massless Fileds in Scalar-Tensor Cosmologies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Massless Fileds in Scalar-Tensor Cosmologies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Massless Fileds in Scalar-Tensor Cosmologies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-289026