PIRSA:08060099  ( Flash Presentation , Windows Presentation , Windows Video File , MP3 , PDF) Which Format?

Speaker(s): Anastasios Avgoustidis

Abstract: I will present a model of inflation in string theory, where the inflaton field corresponds to a Wilson line in the worldvolume of a D-brane, and in the presence of magnetic flux. Inflation ends in a hybrid fashion, when the Wilson line achieves a critical value and an open string mode becomes tachyonic. This scenario predicts a nearly flat, or red tilted, spectrum of scalar perturbations, with negligible primordial gravitational waves. Interestingly, there is a simple compactification in which the eta-problem, appearing in models of brane inflation, is absent.

Date: 06/06/2008 - 11:15 am

Collection: PASCOS 08

URL: http://pirsa.org/08060099/  Share: