Scaling Cosmology

By Winfried Zimdahl, D. Pavón. 2002

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We show that with the help of a suitable coupling between dark energy and cold dark matter it is possible to reproduce any scaling solution ρX ∝ ρMaξ, where ρX and ρM are the densities of dark energy and dark matter, respectively. We demonstrate how the case ξ = 1 alleviates the coincidence problem. Future observations of supernovae at high redshift as well as quasar pairs which are planned to discriminate between different cosmological models will also provide direct constraints on the coupling between dark matter and dark energy.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/525a52979b7d3c67e5bb08ef462aea981d7b4b26