Dark matter problem and effective curvature Lagrangians

Details Dark matter problem and effective curvature Lagrangians Dark matter problem and effective curvature Lagrangians

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005gregr..37.1427s&link_type=abstract

General Relativity and Gravitation, Volume 37, Issue 8, pp.1427-1433

Mathematics

Logic

6

Cosmology, Fourth-Order Gravity, Effective Cosmological Constant

Scientific paper

A `radical' conservative unifying model of scalar dark matter and modified gravity is proposed here. 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 gravitational strength and cosmological constant. A swallow tail or butterfly catastrophe in the bifurcation set indicates the possibility for the coexistence of different Einsteinian domains in our Universe. This finding 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.

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