Inflation and Transition to a Slowly Accelerating Phase from S.S.B. of Scale Invariance

Details Inflation and Transition to a Slowly Accelerating Phase from S.S.B. of Scale Invariance Inflation and Transition to a Slowly Accelerating Phase from S.S.B. of Scale Invariance

2002-11-27

arxiv.org/abs/gr-qc/0211095v2

Class.Quant.Grav. 20 (2003) 1715-1728

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

22 pages, latex, three figures now in separate files

Scientific paper

We consider the effects of adding a scale invariant $R^{2}$ term to the action of the scale invariant model (SIM) studied previously by one of us (E.I.G., Mod. Phys. Lett. A14, 1043 (1999)). The SIM belongs to the general class of theories, where an integration measure independent of the metric is introduced. To implement scale invariance (S.I.), a dilaton field is introduced. The integration of the equations of motion associated with the new measure gives rise to the spontaneous symmetry breaking (S.S.B) of S.I.. After S.S.B. of S.I. in the model with the $R^{2}$ term, it is found that a non trivial potential for the dilaton is generated. This potential contains two flat regions: one associated with the Planck scale and with an inflationary phase, while the other flat region is associated to a very small vacuum energy (V.E.) and is associated to the present slowly accelerated phase of the universe (S.A.PH). The smallness of the V.E. in the S.A.PH. is understood through the see saw mechanism introduced in S.I.M.

Affiliated with

Also associated with

No associations

Rating

Inflation and Transition to a Slowly Accelerating Phase from S.S.B. of Scale Invariance 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 Inflation and Transition to a Slowly Accelerating Phase from S.S.B. of Scale Invariance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inflation and Transition to a Slowly Accelerating Phase from S.S.B. of Scale Invariance will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-140469