Interacting quintessence solution to the coincidence problem

By L. Chimento, A. S. Jakubi, D. Pavón, Winfried Zimdahl. 2003

440 citations recorded by the source corpus.

We show that a suitable interaction between a scalar field and a matter fluid in a spatially homogeneous and isotropic spacetime can drive the transition from a matter dominated era to an accelerated expansion phase and simultaneously solve the coincidence problem of our present Universe. For this purpose we study the evolution of the energy density ratio of these two components. We demonstrate that a stationary attractor solution is compatible with an accelerated expansion of the Universe. We extend this study to account for dissipation effects due to interactions in the dark matter fluid. Finally, type Ia supernovae and primordial nucleosynthesis data are used to constrain the parameters of the model.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/77d3bf985fbcc6769f66bb3f8116e0bee6b6d36e

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In Astronomy and Astrophysics

Citations in the corpus

The growth of structure in interacting dark energy models (2009, neutral): “[7–28]).”
Observational constraints on an interacting dark energy model (2009, background): “…for Qc have been put forward (see, e.g. Wetterich (1995); Amendola (1999); Billyard & Coley (2000); Zimdahl & Pavon (2001); Farrar & Peebles (2004); Chimento et al. (2003); Olivares et al. (2005); Koivisto (2005); Sadjadi & Alimohammadi (2006); Guo et al. (2007); Boehmer et al. (2008); He & Wang…”
Cosmology and Fundamental Physics with the Euclid Satellite (2012, background): “At the background level only, [313], [315], [409] and [916] have also considered which background constraints can be obtained when starting from a fixed present ratio of dark energy and dark matter.”