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

Journal Article · Mon Jun 15 00:00:00 EDT 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.79.123003· OSTI ID:21300921

Sadeghi, J; Banijamali, A; Milani, F ^[1]; Setare, M R ^[2]

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1. Sciences Faculty, Department of Physics, Mazandaran University, P.O. Box 47415-416, Babolsar (Iran, Islamic Republic of)
2. Department of Science, Payame Noor University, Bijar (Iran, Islamic Republic of)

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 {omega} crossing -1. Also, we plot figures for {omega} numerically in special potential and coupling function.

• OSTI ID: 21300921
• Journal Information: Physical Review. D, Particles Fields, Vol. 79, Issue 12; Other Information: DOI: 10.1103/PhysRevD.79.123003; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COUPLING
EQUATIONS OF STATE
GRAVITATION
POTENTIALS
TACHYONS