Interacting models may be key to solve the cosmic coincidence problem

Details Interacting models may be key to solve the cosmic coincidence problem Interacting models may be key to solve the cosmic coincidence problem

2008-12-11

arxiv.org/abs/0812.2210v1

JCAP 0901:020,2009

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

25 pages, 11 figures; accepted for publication in JCAP

Scientific paper

10.1088/1475-7516/2009/01/020

It is argued that cosmological models that feature a flow of energy from dark energy to dark matter may solve the coincidence problem of late acceleration (i.e., "why the energy densities of both components are of the same order precisely today?"). However, much refined and abundant observational data of the redshift evolution of the Hubble factor are needed to ascertain whether they can do the job.

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