What is there in the black box of dark energy: variable cosmological parameters or multiple (interacting) components?

Abstract

The coincidence problems and other dynamical features of dark energy are studied in cosmological models with variable cosmological parameters and in models with the composite dark energy. It is found that many of the problems usually considered to be cosmological coincidences can be explained or significantly alleviated in the aforementioned models.

arXiv comment6 pages, 1 figure, talk given at IRGAC2006 (Barcelona, July 11-15, 2006), to appear in J. Phys. A

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Cited by in corpus (3)

• Hubble expansion and structure formation in the "running FLRW model" of the cosmic evolution
• Dark energy perturbations and cosmic coincidence
• Effective growth of matter density fluctuations in the running LCDM and LXCDM models