High Energy Physics - Theory
[Submitted on 5 Sep 2012
]
Title: Exact solutions in a scalar-tensor model of dark energy
Title: 精确解在标量-张量暗能量模型中
Abstract: We consider a model of scalar field with non minimal kinetic and Gauss Bonnet couplings as a source of dark energy. Based on asymptotic limits of the generalized Friedmann equation, we impose restrictions on the kinetic an Gauss-Bonnet couplings. This restrictions considerable simplify the equations, allowing for exact solutions unifying early time matter dominance with transitions to late time quintessence and phantom phases. The stability of the solutions in absence of matter has been studied.
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