Assisted inflation via tachyon condensation
High Energy Physics - Phenomenology
2009-11-07 v2 Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
In this paper we propose a new mechanism of inflating the Universe with non-BPS branes which decay into stable branes via tachyon condensation. In a single brane scenario the tachyon potential is very steep and unable to support inflation. However if the universe lives in a stack of branes produced by a set of non-interacting unstable branes, then the associated set of tachyons may drive inflation along our 3 spatial dimensions. After tachyon condensation the Universe is imagined to be filled with a set of parallel stable branes. We study the scalar density perturbations and reheating within this setup.
Keywords
Cite
@article{arxiv.hep-ph/0107058,
title = {Assisted inflation via tachyon condensation},
author = {Anupam Mazumdar and Sudhakar Panda and Abdel Pérez-Lorenzana},
journal= {arXiv preprint arXiv:hep-ph/0107058},
year = {2009}
}
Comments
LaTeX file, 10 pages, three figures included. Minor changes, small clarification added in section II. Final version