Accelerated closed universes in scalar-tensor theories

Abstract

We describe an accelerating universe model in the context of a scalar-tensor theory. This model is intrinsically closed, and is filled with quintessence-like scalar field components, in addition to the Cold Dark Matter component. With a background geometry specified by the Friedman-Robertson-Walker metric, we establish conditions under which this closed cosmological model, described in a scalar-tensor theory, may look flat in a genuine Jordan-Brans-Dicke theory. Both models become indistinguishable at low enough redshift.

8 pages, 4 figures, in press (CQG)

References in corpus (2)

• Closed universe and the first Doppler-peak of the CMB spectrum
• Curvature of the universe and the dark energy potential

Cited by in corpus (3)

• Modelling the rotational curves of spiral galaxies with a scalar field
• Visser's Massive Gravity Bimetric Theory Revisited
• Multidimensional inhomogeneous cosmology in scalar tensor theory