Assisted inflation via tachyon condensation

Anupam Mazumdar; Sudhakar Panda; Abdel Perez-Lorenzana

doi:10.1016/S0550-3213(01)00410-2

Assisted inflation via tachyon condensation

Anupam Mazumdar, Sudhakar Panda, Abdel Perez-Lorenzana

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Abstract

In this paper we propose a new mechanism of inflating the Universe with non-BPS D4-branes which decay into stable D3-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 noninteracting unstable D4-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 D3-branes. We study the scalar density perturbations and reheating within this setup

Original language	English
Pages (from-to)	101-116
Number of pages	16
Journal	Nuclear Physics B
Volume	614
Issue number	1-2
DOIs	https://doi.org/10.1016/S0550-3213(01)00410-2
Publication status	Published - Oct-2001
Externally published	Yes

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AB - In this paper we propose a new mechanism of inflating the Universe with non-BPS D4-branes which decay into stable D3-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 noninteracting unstable D4-branes, then the associated set of tachyons may drive inflation along our 3 spatial dimensions. After tachyon condensation the Universe isimagined to be filled with a set of parallel stable D3-branes. We study the scalar density perturbations and reheating within this setup

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Assisted inflation via tachyon condensation

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