Inflation with improved D3-brane potential and the fine tunings associated with the model
High Energy Physics - Theory
2011-06-07 v2 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
We investigate brane-antibrane inflation in a warped deformed conifold background that includes contributions to the potential arising from imaginary anti-self-dual (IASD) fluxes including the term with irrational scaling dimension discovered recently. We find that the model can give rise to required number of e-foldings; observational constraint on COBE normalization is easily satisfied and low value of the tensor to scalar ratio of perturbations is achieved. We observe that these corrections to the effective potential help in relaxing the severe fine tunings associated with the earlier analysis.
Keywords
Cite
@article{arxiv.1010.1407,
title = {Inflation with improved D3-brane potential and the fine tunings associated with the model},
author = {Amna Ali and Atri Deshamukhya and Sudhakar Panda and M. Sami},
journal= {arXiv preprint arXiv:1010.1407},
year = {2011}
}
Comments
8 pages, 4 figures; typos corrected, minor clarifications and new refs added, to appear in epjc