An inflationary scenario in intersecting brane models

We propose a new scenario for D-term inflation which appears quitestraightforwardly in the open string sector of intersecting brane models. Wetake the inflaton to be a chiral field in a bifundamental representation of thehidden sector and we argue that a sufficiently flat potential can be braneengineered. This type of model generically predicts a near gaussian redspectrum with negligible tensor modes. We note that this model can verynaturally generate a baryon asymmetry at the end of inflation via the recentlyproposed hidden sector baryogenesis mechanism. We also discuss the possibilitythat Majorana masses for the neutrinos can be simultaneously generated by thetachyon condensation which ends inflation. Our proposed scenario is viable forboth high and low scale supersymmetry breaking.Comment: 30 pages, 2 figures; v2 references and comments adde