Extended inflation in scalar-tensor theories of gravity

Details Extended inflation in scalar-tensor theories of gravity Extended inflation in scalar-tensor theories of gravity

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990phlb..243...45g&link_type=abstract

Physics Letters B, Volume 243, Issue 1-2, p. 45-51.

Physics

73

Scientific paper

Extended inflation based on a pure Brans-Dicke theory of gravity with constant parameter ω (ω>30 in order to avoid unacceptable distortions of the microwave background radiation) is ruled out by light-deflection and time-delay experiments (ω>500). We propose a dynamical mechanism to solve this problem, based on a general scalar-tensor theory of gravity with a function ω(f) having a singularity at f=fc. We analyze a particular class of models, with a Brans-Dicke-like behaviour during inflation, which converge continuously to general relativity during the radiation- and matter-dominated eras. Solving numerically their equations of motion we find a subclass of models for which ω<30 at the end of inflation and ω>500 today, thus in agreement with all post-newtonian experiments.
On leave of absence from Instituto de Estructura de la Materia, CSIC, Serrano 123, E-28006 Madrid, Spain.

Affiliated with

Also associated with

No associations

Rating

Extended inflation in scalar-tensor theories of gravity 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 Extended inflation in scalar-tensor theories of gravity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extended inflation in scalar-tensor theories of gravity will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-988544