Tachyon cosmology, supernovae data and the Big Brake singularity
Jan, 2009
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Abstract: (arXiv)
In this paper we compare the existing observational data on type Ia Supernovae with the theoretical evolutions of the universe predicted by a one-parameter family of tachyon models which we have introduced recently in paper [6]. Among the set of the trajectories of the model which are compatible with the data there is a consistent subset for which the fate of 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 CDM model.- 95.36.+x
- 98.80.Jk
- 98.80.Cq
- 98.80.Es
- tachyon
- singularity
- supernova
- dark matter
- trajectory
- boundary condition
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