Interacting models may be key to solve the cosmic coincidence problem

Journal Article · Thu Jan 15 00:00:00 EST 2009 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2009/01/020· OSTI ID:22156859

Campo, Sergio del; Herrera, Ramon ^[1]; Pavon, Diego ^[2]

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1. Instituto de Fisica, Pontificia Universidad Catolica de Valparaiso, Avenida Brasil 2950, Casilla 4059, Valparaiso (Chile)
2. Departamento de Fisica, Facultad de Ciencias, Universidad Autonoma de Barcelona, 08193 Bellaterra (Barcelona) (Spain)

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?{sup )}. 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.

• OSTI ID: 22156859
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2009, Issue 01; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ACCELERATION
COSMOLOGICAL MODELS
ENERGY DENSITY
GALACTIC EVOLUTION
HUBBLE EFFECT
NONLUMINOUS MATTER
RED SHIFT