Abstract
Plenitude of models incorporating a dynamical dark energy equation of state are proposed and the scalar-tensor gravity is certainly one possible candidate. In this paper we examine whether a cosmological rip scenarios are possible in the scalar-tensor gravity by parametrizing the equation of state of dark energy Wde(z) in an appropriate way. The parameters of the model are constrained by the observational data of type Ia supernovas collected to Union 2.1 compilation.
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