Spinflation with Angular Potentials
arXiv:1107.5522 · doi:10.1007/JHEP01(2012)037
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 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 also increases the amount of inflation. We also derive an analytic approximation for the number of e-foldings along the DBI trajectory in terms of the compactification parameters.
20 pages, 10 figures. Revised to published version: minor errors corrected, references and discussion added
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Cited by in corpus (11)
- A Statistical Approach to Multifield Inflation: Many-field Perturbations Beyond Slow Roll
- Primordial perturbations from inflation with a hyperbolic field-space
- Dark D-brane Cosmology
- D-brane Potentials in the Warped Resolved Conifold and Natural Inflation
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