Curvature driven acceleration : a utopia or a reality ?

Details Curvature driven acceleration : a utopia or a reality ? Curvature driven acceleration : a utopia or a reality ?

2005-05-05

arxiv.org/abs/astro-ph/0505096v2

Class.Quant.Grav.23:4159-4166,2006

Astronomy and Astrophysics

Astrophysics

8 pages, 4 figures

Scientific paper

10.1088/0264-9381/23/12/012

The present work shows that a combination of nonlinear contribution from the Ricci curvature in Einstein field equations can drive a late time acceleration of expansion of the universe. The transit from the decelerated to the accelerated phase of expansion takes place smoothly without having to resort to a study of asymptotic behaviour. This result emphasizes the need for thorough and critical examination of models with nonlinear contribution from the curvature.

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