Cosmological acceleration from a gas of strings

Francesc Ferrer

doi:10.1016/j.nuclphysbps.2009.07.039

Cosmological acceleration from a gas of strings

Francesc Ferrer

Department of Physics

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

7 Scopus citations

Abstract

In string gas cosmology, the extra dimensions of the underlying theory are kept at a microscopic scale by a gas of strings. In the matter-dominated era, however, dust pressure can lead to oscillations of the extra dimensions and to acceleration in the three visible dimensions, even with a vanishing cosmological term. We review the resulting oscillating expansion history, that provides an acceptable fit to the observed accelerated expansion of the Universe.

Original language	English
Pages (from-to)	218-223
Number of pages	6
Journal	Nuclear Physics B (Proceedings Supplements)
Volume	194
Issue number	C
DOIs	https://doi.org/10.1016/j.nuclphysbps.2009.07.039
State	Published - Oct 2009

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10.1016/j.nuclphysbps.2009.07.039

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title = "Cosmological acceleration from a gas of strings",

abstract = "In string gas cosmology, the extra dimensions of the underlying theory are kept at a microscopic scale by a gas of strings. In the matter-dominated era, however, dust pressure can lead to oscillations of the extra dimensions and to acceleration in the three visible dimensions, even with a vanishing cosmological term. We review the resulting oscillating expansion history, that provides an acceptable fit to the observed accelerated expansion of the Universe.",

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doi = "10.1016/j.nuclphysbps.2009.07.039",

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N2 - In string gas cosmology, the extra dimensions of the underlying theory are kept at a microscopic scale by a gas of strings. In the matter-dominated era, however, dust pressure can lead to oscillations of the extra dimensions and to acceleration in the three visible dimensions, even with a vanishing cosmological term. We review the resulting oscillating expansion history, that provides an acceptable fit to the observed accelerated expansion of the Universe.

AB - In string gas cosmology, the extra dimensions of the underlying theory are kept at a microscopic scale by a gas of strings. In the matter-dominated era, however, dust pressure can lead to oscillations of the extra dimensions and to acceleration in the three visible dimensions, even with a vanishing cosmological term. We review the resulting oscillating expansion history, that provides an acceptable fit to the observed accelerated expansion of the Universe.

UR - https://www.scopus.com/pages/publications/71149085963

U2 - 10.1016/j.nuclphysbps.2009.07.039

DO - 10.1016/j.nuclphysbps.2009.07.039

M3 - Article

AN - SCOPUS:71149085963

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VL - 194

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EP - 223

JO - Nuclear Physics B (Proceedings Supplements)

JF - Nuclear Physics B (Proceedings Supplements)

IS - C

ER -

Cosmological acceleration from a gas of strings

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