Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Volume -, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2009/01/020
Keywords
cosmological perturbation theory; quantum gravity phenomenology; physics of the early universe
Funding
- Comision Nacional de Ciencias y Tecnologia (Chile) [1070306]
- Programa Bicentenario de Ciencia y Tecnologia [N<SUP>0</SUP> PSD/06]
- Ministerio Espanol de Educacion y Ciencia [FIS2006-12296-C02-01]
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It is argued that cosmological models that feature a flow of energy from dark nergy 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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