Accelerated closed universes in scalar-tensor theories

Details Accelerated closed universes in scalar-tensor theories Accelerated closed universes in scalar-tensor theories

2003-08-25

arxiv.org/abs/astro-ph/0308441v1

Class.Quant.Grav.20:4331-4342,2003

Astronomy and Astrophysics

Astrophysics

8 pages, 4 figures, in press (CQG)

Scientific paper

10.1088/0264-9381/20/20/301

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.

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