Dark energy and dark matter from nonlocal ghost-free gravity theory

Details Dark energy and dark matter from nonlocal ghost-free gravity theory Dark energy and dark matter from nonlocal ghost-free gravity theory

2011-07-07

arxiv.org/abs/1107.1463v2

Phys. Lett. B 710 (2012) 12-16

Physics

High Energy Physics

High Energy Physics - Theory

9 pages, LaTeX, final version published in Phys. Lett. B: title changed, discussion of Schwinger-Keldysh technique vs Euclidea

Scientific paper

We suggest a class of generally covariant ghost-free nonlocal gravity models generating de Sitter or Anti-de Sitter background with an arbitrary value of the effective cosmological constant and featuring a mechanism of dark matter simulation. These models interpolate between the general relativistic phase on a flat spacetime background and their strongly coupled infrared (Anti)-de Sitter phase with two propagating massless graviton modes.

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