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arXiv · 0901.2292

Tachyon cosmology, supernovae data and the Big Brake singularity

Z. Keresztes·L. Á. Gergely·V. Gorini·U. Moschella·A. Yu. Kamenshchik
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Abstract

We compare the existing observational data on type Ia Supernovae with the evolutions of the universe predicted by a one-parameter family of tachyon models which we have introduced recently in paper \cite{we-tach}. Among the set of the trajectories of the model which are compatible with the data there is a consistent subset for which the universe ends up in a new type of soft cosmological singularity dubbed Big Brake. This opens up yet another scenario for the future history of the universe besides the one predicted by the standard $Λ$CDM model.

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Z. Keresztes, L. Á. Gergely, V. Gorini, U. Moschella, A. Yu. Kamenshchik. 2009-04-21. Tachyon cosmology, supernovae data and the Big Brake singularity. https://doi.org/10.1103/physrevd.79.083504

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