Tuesday, April 10, 2012

1105.0325 (A. Sheykhi et al.)

Tachyon Reconstruction of Ghost Dark Energy    [PDF]

A. Sheykhi, M. Sadegh Movahed, E. Ebrahimi
Recently it has been argued that a possible source for the dark energy may arise due to the contribution to the vacuum energy of the QCD ghost in a time-dependent background. In this paper we establish a connection between interacting ghost dark energy and tachyon field. It is demonstrated that the evolution of the ghost dark energy dominated universe can be described completely by a single tachyon scalar field. The potential and the dynamics of the tachyon field are reconstructed according to the evolutionary behavior of ghost energy density.
View original: http://arxiv.org/abs/1105.0325

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