Tachyon cosmology, supernovae data, and the big brake singularity

Z. Keresztes, L. A. Gergely, V. Gorini, U. Moschella, A. Yu Kamenshchik

Research output: Contribution to journalArticle

40 Citations (Scopus)

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. 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 ΛCDM model.

Original languageEnglish
Article number083504
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume79
Issue number8
DOIs
Publication statusPublished - Apr 1 2009

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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