Phantom Behavior Bounce with Tachyon and Non-minimal Derivative Coupling

Details Phantom Behavior Bounce with Tachyon and Non-minimal Derivative Coupling Phantom Behavior Bounce with Tachyon and Non-minimal Derivative Coupling

2012-01-08

arxiv.org/abs/1201.1627v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

15 pages, 8 figures, Accepted for publication in JCAP. arXiv admin note: substantial text overlap with arXiv:1105.4967

Scientific paper

The bouncing cosmology provides a successful solution of the cosmological singularity problem. In this paper, we study the bouncing behavior of a single scalar field model with tachyon field non-minimally coupled to itself, its derivative and to the curvature. By utilizing the numerical calculations we will show that the bouncing solution can appear in the universe dominated by such a quintom matter with equation of state crossing the phantom divide line. We also investigate the classical stability of our model using the phase velocity of the homogeneous perturbations of the tachyon scalar field.

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