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2009

Tachyon cosmology, supernovae data and the Big Brake singularity

Keresztes, Z., Gergely, L. Á., Gorini, V. et al.

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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 $\Lambda$CDM model.

Tachyon cosmology, supernovae data and the Big Brake singularity · Around

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