Cosmological expansion governed by a scalar field from a 5D vacuum

Details Cosmological expansion governed by a scalar field from a 5D vacuum Cosmological expansion governed by a scalar field from a 5D vacuum

2006-02-02

arxiv.org/abs/gr-qc/0602014v3

Phys.Lett. B637 (2006) 16-20

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

version accepted in Phys. Lett. B

Scientific paper

10.1016/j.physletb.2006.04.033

We consider a single field governed expansion of the universe from a five dimensional (5D) vacuum state. Under an appropiate change of variables the universe can be viewed in a effective manner as expanding in 4D with an effective equation of state which describes different epochs of its evolution. In the example here worked the universe fistly describes an inflationary phase, followed by a decelerated expansion. Thereafter, the universe is accelerated and describes a quintessential expansion to finally, in the future, be vacuum dominated.

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