A graceful entrance to braneworld inflation

Details A graceful entrance to braneworld inflation A graceful entrance to braneworld inflation

2006-01-27

arxiv.org/abs/hep-th/0601203v1

Phys.Rev. D73 (2006) 083508

Physics

High Energy Physics

High Energy Physics - Theory

Scientific paper

10.1103/PhysRevD.73.083508

Positively-curved, oscillatory universes have recently been shown to have important consequences for the pre-inflationary dynamics of the early universe. In particular, they may allow a self-interacting scalar field to climb up its potential during a very large number of these cycles. The cycles are naturally broken when the potential reaches a critical value and the universe begins to inflate, thereby providing a `graceful entrance' to early universe inflation. We study the dynamics of this behaviour within the context of braneworld scenarios which exhibit a bounce from a collapsing phase to an expanding one. The dynamics can be understood by studying a general class of braneworld models that are sourced by a scalar field with a constant potential. Within this context, we determine the conditions a given model must satisfy for a graceful entrance to be possible in principle. We consider the bouncing braneworld model proposed by Shtanov and Sahni and show that it exhibits the features needed to realise a graceful entrance to inflation for a wide region of parameter space.

Affiliated with

Also associated with

No associations

Rating

A graceful entrance to braneworld inflation 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 A graceful entrance to braneworld inflation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A graceful entrance to braneworld inflation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-506108