Dipolar Dark Matter and Dark Energy

Details Dipolar Dark Matter and Dark Energy Dipolar Dark Matter and Dark Energy

2009-01-20

arxiv.org/abs/0901.3114v2

Phys.Rev.D80:023524,2009

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

11 pages, 2 figures; minor stylistic corrections, added references, added appendix; to appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.80.023524

In previous work [L. Blanchet and A. Le Tiec, Phys. Rev. D 78, 024031 (2008)], a model of dark matter and dark energy based on the concept of gravitational polarization was investigated. This model was shown to recover the concordance cosmological scenario (Lambda-CDM) at cosmological scales, and the phenomenology of the modified Newtonian dynamics (MOND) at galactic scales. In this article we prove that the model can be formulated with a simple and physically meaningful matter action in general relativity. We also provide alternative derivations of the main results of the model, and some details on the variation of the action.

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