Abstract: We investigate in detail the cosmological consequences of realistic angular dependent potentials in the brane inflation scenario. Embedding a warped throat into a compact Calabi-Yau space with all moduli stabilized breaks the no-scale structure and induces angular dependence in the potential of the probe D3-brane. We solve the equations of motion from the DBI action in the warped deformed conifold including linearized as well as nonlinear perturbations around the imaginary self-dual solution. Our numerical solutions show that angular dependence is a next to leading order correction to the dominant radial motion of the brane, however, just as angular motion typically increases the amount of inflation (spinflation), having additional angular dependence from linearized perturbations also increases the amount of inflation. Our numerical results also show that the DBI brane inflationary solutions are quite robust against nonlinear corrections.
Time: Saturday, December 21, 2013 at 15:00 in Larak Seminar Room