Cosmic acceleration from second order gauge gravity

Details Cosmic acceleration from second order gauge gravity Cosmic acceleration from second order gauge gravity

2007-12-18

arxiv.org/abs/0712.3062v3

Astrophys.Space Sci.332:201-208,2011

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

RevTex4 15 pages, 1 figure. Accepted for publication in Astrophysics & Space Science

Scientific paper

10.1007/s10509-010-0483-y

We construct a phenomenological theory of gravitation based on a second order gauge formulation for the Lorentz group. The model presents a long-range modification for the gravitational field leading to a cosmological model provided with an accelerated expansion at recent times. We estimate the model parameters using observational data and verify that our estimative for the age of the Universe is of the same magnitude than the one predicted by the standard model. The transition from the decelerated expansion regime to the accelerated one occurs recently (at $\sim9.3\;Gyr$).

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