Non-Minimal Inflation on the Warped DGP Brane

Understand

We construct an inflation model with inflaton non-minimally coupled to gravity on a warped DGP brane.

• Using an exponential potential, we calculate scalar power spectrum, spectral index and the running of the spectral index.
• We show that for a suitable range of non-minimal coupling it is possible to exit the inflationary phase spontaneously and without any mechanism, even in the case that minimal inflation can not exit spontaneously.
• By a detailed analysis of parameter space, we study the constraints imposed on the non-minimal coupling from recent observational data.