Dark energy and decompactification in string gas cosmology

Francesc Ferrer; Syksy Räsänen

doi:10.1088/1126-6708/2006/02/016

Dark energy and decompactification in string gas cosmology

Francesc Ferrer
, Syksy Räsänen

Department of Physics

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

We study the stability of extra dimensions in string gas cosmology at late times. Vacuum energy and, interestingly, baryons lead to decompactification after they become dynamically important. The string gas can stabilise the effect of baryons, but not that of vacuum energy. However, we find that the interplay of baryons and strings can lead to acceleration in the visible dimensions, without the need for vacuum energy.

Original language	English
Pages (from-to)	16
Number of pages	1
Journal	Journal of High Energy Physics
Issue number	2
DOIs	https://doi.org/10.1088/1126-6708/2006/02/016
State	Published - Feb 1 2006

Keywords

Cosmology of Theories beyond the SM

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10.1088/1126-6708/2006/02/016

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title = "Dark energy and decompactification in string gas cosmology",

abstract = "We study the stability of extra dimensions in string gas cosmology at late times. Vacuum energy and, interestingly, baryons lead to decompactification after they become dynamically important. The string gas can stabilise the effect of baryons, but not that of vacuum energy. However, we find that the interplay of baryons and strings can lead to acceleration in the visible dimensions, without the need for vacuum energy.",

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AU - Räsänen, Syksy

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AB - We study the stability of extra dimensions in string gas cosmology at late times. Vacuum energy and, interestingly, baryons lead to decompactification after they become dynamically important. The string gas can stabilise the effect of baryons, but not that of vacuum energy. However, we find that the interplay of baryons and strings can lead to acceleration in the visible dimensions, without the need for vacuum energy.

KW - Cosmology of Theories beyond the SM

UR - https://www.scopus.com/pages/publications/33644781589

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DO - 10.1088/1126-6708/2006/02/016

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SN - 1029-8479

SP - 16

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

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Dark energy and decompactification in string gas cosmology

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