Crossing of the phantom divide using tachyon-Gauss-Bonnet gravity

Details Crossing of the phantom divide using tachyon-Gauss-Bonnet gravity Crossing of the phantom divide using tachyon-Gauss-Bonnet gravity

Jun 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009phrvd..79l3003s&link_type=abstract

Physical Review D, vol. 79, Issue 12, id. 123003

Physics

18

Dark Energy, Cosmology

Scientific paper

In this paper we consider two models. First, we study tachyon-Gauss-Bonnet gravity and obtain the condition of the equation of state crossing -1. Second, we discuss the modified Gauss-Bonnet gravity with the tachyon field and show the condition of ω crossing -1. Also, we plot figures for ω numerically in special potential and coupling function.

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