Chaotic inflation on the brane

Physics – High Energy Physics – High Energy Physics - Phenomenology

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

New figure to show accuracy of high-energy approximation. Version accepted by Phys. Rev. D (RC)

Scientific paper

10.1103/PhysRevD.62.041301

We consider slow-roll inflation in the context of recently proposed four-dimensional effective gravity induced on the world-volume of a three-brane in five-dimensional Einstein gravity. We find significant modifications of the simplest chaotic inflationary scenario when the five-dimensional Planck scale is below about 10^{17} GeV. We use the comoving curvature perturbation, which remains constant on super-Hubble scales, in order to calculate the spectrum of adiabatic density perturbations generated. Modifications to the Friedmann constraint equation lead to a faster Hubble expansion at high energies and a more strongly damped evolution of the scalar field. This assists slow-roll, enhances the amount of inflation obtained in any given model, and drives the perturbations towards an exactly scale-invariant Harrison-Zel'dovich spectrum. In chaotic inflation driven by a massive scalar field we show that inflation can occur at field values far below the four-dimensional Planck scale, though above the five-dimensional fundamental scale.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Chaotic inflation on the brane 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 Chaotic inflation on the brane, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chaotic inflation on the brane will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-518993

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.