The acceleration of the universe and the physics behind it

Details The acceleration of the universe and the physics behind it The acceleration of the universe and the physics behind it

2006-05-12

arxiv.org/abs/astro-ph/0605313v1

Gen.Rel.Grav.39:307-342,2007

Astronomy and Astrophysics

Astrophysics

18 pages, 18 figures

Scientific paper

10.1007/s10714-006-0385-z

Using a general classification of dark enegy models in four classes, we discuss the complementarity of cosmological observations to tackle down the physics beyond the acceleration of our universe. We discuss the tests distinguishing the four classes and then focus on the dynamics of the perturbations in the Newtonian regime. We also exhibit explicitely models that have identical predictions for a subset of observations.

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