Interacting models may be key to solve the cosmic coincidence problem

Sergio Del Campo, Ramón Herrera, Diego Pavón

Research output: Contribution to journalArticlepeer-review

72 Scopus citations


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.

Original languageEnglish
Article number020
JournalJournal of Cosmology and Astroparticle Physics
Issue number1
StatePublished - 2009


  • Cosmological perturbation theory
  • Physics of the early universe
  • Quantum gravity phenomenology


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