A simple toy model for a unified picture of dark energy, dark matter, and inflation

Details A simple toy model for a unified picture of dark energy, dark matter, and inflation A simple toy model for a unified picture of dark energy, dark matter, and inflation

2011-05-02

arxiv.org/abs/1105.0345v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

25 pages. The model is given in 3 pages. The rest is compatibility check with observations and supplementary material

Scientific paper

A specific scale factor in Robertson-Walker metric with the prospect of giving the overall cosmic history in a unified picture roughly is considered. The corresponding energy-momentum tensor is identified as that of two scalar fields where one plays the roles of both inflaton and dark matter while the other accounts for dark energy. A preliminary phenomenological analysis gives an order of magnitude agreement with observational data. The resulting picture may be considered as a first step towards a single model for all epochs of cosmic evolution.

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