Inflaton field governed universe from NKK theory of gravity: stochastic approach

Details Inflaton field governed universe from NKK theory of gravity: stochastic approach Inflaton field governed universe from NKK theory of gravity: stochastic approach

2005-05-24

arxiv.org/abs/gr-qc/0505123v4

Eur.Phys.J.C45:249-256,2006

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

accepted in European Physical Journal C

Scientific paper

10.1140/epjc/s2005-02404-9

We study a nonperturbative single field (inflaton) governed cosmological model from a 5D Noncompact Kaluza-Klein (NKK) theory of gravity. The inflaton field fluctuations are estimated for different epochs of the evolution of the universe. We conclude that the inflaton field has been sliding down its (quadratic) potential hill along all the evolution of the universe and a mass of the order of the Hubble parameter. In the model here developed the only free parameter is the Hubble parameter, which could be reconstructed in future from Super Nova Acceleration Probe (SNAP) data.

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