Dark energy perturbations and a possible solution to the coincidence problem

Details Dark energy perturbations and a possible solution to the coincidence problem Dark energy perturbations and a possible solution to the coincidence problem

2009-04-21

arxiv.org/abs/0904.3293v2

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

16 pages, 3 figures. Presented at the 7th International Heidelberg Conference on Dark Matter in Astro and Particle Physics (DA

Scientific paper

We analyze some generic properties of the dark energy (DE) perturbations, in the case of a self-conserved DE fluid. We also apply a simple test (the "F-test") to compare a model to the data on large scale structure (LSS) under the assumption of negligible DE perturbations. We exemplify our discussions by means of the LXCDM model, showing that it provides a viable solution to the cosmological coincidence problem.

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