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Dynamical symmetries in Brans-Dicke cosmology
(American Physical SocietyPhysical Review D, 2017-01-20)
In the context of generalized Brans-Dicke cosmology we use the Killing tensors of the minisuperspace in order to determine the unspecified potential of a scalar-tensor gravity theory. Specifically, based on the existence ...
Observational constraints on new exact inflationary scalar-field solutions
(American Physical SocietyPhysical Review D, 2016-10-15)
An algorithm is used to generate new solutions of the scalar-field equations in homogeneous and isotropic universes. Solutions can be found for pure scalar fields with various potentials in the absence and presence of ...