Inflation, bifurcations of nonlinear curvature Lagrangians and dark energy

Details Inflation, bifurcations of nonlinear curvature Lagrangians and dark energy Inflation, bifurcations of nonlinear curvature Lagrangians and dark energy

2007-04-09

arxiv.org/abs/0704.1135v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

20 pages, 8 figures, Proceedings of the 11th Marcel Grossmann Meeting (MG11) in Berlin, Germany, July 23-29, 2006

Scientific paper

A possible equivalence of scalar dark matter, the inflaton, and modified gravity is analyzed. After a conformal mapping, the dependence of the effective Lagrangian on the curvature is not only singular but also bifurcates into several almost Einsteinian spaces, distinguished only by a different effective gravitational strength and cosmological constant. A swallow tail catastrophe in the bifurcation set indicates the possibility for the coexistence of different Einsteinian domains in our Universe. This `triple unification' may shed new light on the nature and large scale distribution not only of dark matter but also on `dark energy', regarded as an effective cosmological constant, and inflation.

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