Cosmological acceleration from a gas of strings

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Ferrer, Francesc
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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.
Comment: 6 pages, 2 figures. Proceedings of the GGI Dark Matter and Dark Energy conference
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High Energy Physics - Theory
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