Cosmic acceleration from second order gauge gravity |
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Authors: | R R Cuzinatto C A M de Melo L G Medeiros and P J Pompeia |
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Abstract: | 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 ∼9.3 Gyr). |
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