A Note on Inflation with Tachyon Rolling on the Gauss-Bonnet Brane

Abstract

In this paper we study the tachyonic inflation in brane world cosmology with Gauss-Bonnet term in the bulk. We obtain the exact solution of slow roll equations in case of exponential potential. We attempt to implement the proposal of Lidsey and Nunes, astro-ph/0303168, for the tachyon condensate rolling on the Gauss-Bonnet brane and discuss the difficulties associated with the proposal.

Comments: RevTex4, 5 pages, no figures, Minor clarifications added and references updated, To appear in PRD