Fitting oscillating string gas cosmology to supernova data

Abstract

In string gas cosmology, extra dimensions are stabilised by a gas of strings. In the matter-dominated era, competition between matter pushing the extra dimensions to expand and the string gas pulling them back can lead to oscillations of the extra dimensions and acceleration in the visible dimensions. We fit this model to supernova data, taking into account the Big Bang Nucleosynthesis constraint on the energy density of the string gas. The fit to the Union set of supernova data is acceptable, but the fit to the ESSENCE data is poor.

17 pages, 4 figures. v2: published version. Important correction in the calculation of distances, added references

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Cited by in corpus (2)

• Testing Oscillating Primordial Spectrum and Oscillating Dark Energy with Astronomical Observations
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