Rapid Oscillatory quintessence with variable equation of state parameter in non minimal derivative coupling model

Abstract

The rapid oscillating scalar field is considered as the quintessence in the framework of nonminimal kinetic coupling model. The scalar field behaves like a perfect fluid with a variable equation of state parameter which can be expressed as a function of the Hubble parameter. This feature enables us to study its evolution via continuity equation. The scalar field may behave as dark energy in the present epoch, while it behaves like dark matter in the future. This characteristic allows the occurrence of a decelerated expansion after the present acceleration, without invoking any interaction. The model is also studied in the presence of an interaction between dark sectors alleviating the coincidence problem. The stability of the model is investigated and the stable attractor solutions are studied.

19 pages, 7 figures, major revision

References in corpus (6)

• Dynamics of dark energy
• Large-scale instability in interacting dark energy and dark matter fluids
• The Dynamics of Quintessence, The Quintessence of Dynamics
• Realistic cosmological scenario with non-minimal kinetic coupling
• Evolution of Oscillating Scalar Fields as Dark Energy
• Non-minimal kinetic coupling and the phenomenology of dark energy

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• Symmetry breaking and the onset of cosmic acceleration in scalar field models
• Temperature in warm inflation in non minimal kinetic coupling model
• Warm inflation with an oscillatory inflaton in the non-minimal kinetic coupling model
• Quasinormal modes of scalar field coupled to Einstein's tensor in the non-commutative geometry inspired black hole
• Thermodynamics of general scalar-tensor theory with non-minimally derivative coupling
• Oscillating scalar fields in extended quintessence
• No scalar hair in nonminimal derivative coupling model for Neumann and Dirichlet reflecting star