Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2009-01-15
Phys.Rev.D79:083504,2009
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
v2: 8 pages, 1 figure + 2 figure panels of 6 figures each; slightly shortened for improved presentation; new references; publi
Scientific paper
10.1103/PhysRevD.79.083504
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.
Gergely L. A.
Gorini Vittorio
Kamenshchik Alexander Yu.
Keresztes Zoltán
Moschella Ugo
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