Chaotic Inflation on the Brane with Induced Gravity

TL;DR

This paper investigates how chaotic inflation behaves in a braneworld model with induced gravity, revealing significant corrections to standard cosmology that align with recent observational data.

Contribution

It introduces a detailed analysis of slow-roll inflation in a self-gravitating induced gravity braneworld, highlighting new corrections to the Friedmann equation and their implications.

Findings

Corrections to the Friedmann equation improve agreement with observations.

Five-dimensional effects reproduce Randall-Sundrum inflationary parameters.

Significant deviations from standard cosmology at high energies.

Abstract

We study the slow-roll inflationary dynamics in a self-gravitating induced gravity braneworld model with bulk cosmological constant. For E \gg M_{5}^{3}/M^{2}_{2} we find important corrections to the four-dimensional Friedmann equation which bring the standard chaotic inflationary scenario in closer agreement with recent observations. For \lambda/M^{3}_{5} \ll E \ll M^{3}_{5}/M^{2}_{4} we find five-dimensional corrections to the Friedmann equation, which give the known Randall-Sundrum results of the inflationary parameters.