Towards multi-field D-brane inflation in a warped throat
High Energy Physics - Theory
2010-11-30 v2 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
We study the inflationary dynamics in a model of slow-roll inflation in warped throat. Inflation is realized by the motion of a D-brane along the radial direction of the throat, and at later stages instabilities develop in the angular directions. We closely investigate both the single field potential relevant for the slow-roll phase, and the full multi-field one including the angular modes which becomes important at later stages. We study the main features of the instability process, discussing its possible consequences and identifying the vacua towards which the angular modes are driven.
Keywords
Cite
@article{arxiv.1007.2068,
title = {Towards multi-field D-brane inflation in a warped throat},
author = {Heng-Yu Chen and Jinn-Ouk Gong and Kazuya Koyama and Gianmassimo Tasinato},
journal= {arXiv preprint arXiv:1007.2068},
year = {2010}
}
Comments
(v1) 35 pages, 7 figures, 2 tables; (v2) 37 pages, more discussions and references, to appear in Journal of Cosmology and Astroparticle Physics