Unified dark energy-dark matter model with inverse quintessence

Stefano Ansoldi, Eduardo I. Guendelman

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


We consider a model where both dark energy and dark matter originate from the coupling of a scalar field with a non-canonical kinetic term to, both, a metric measure and a non-metric measure. An interacting dark energy/dark matter scenario can be obtained by introducing an additional scalar that can produce non constant vacuum energy and associated variations in dark matter. The phenomenology is most interesting when the kinetic term of the additional scalar field is ghost-type, since in this case the dark energy vanishes in the early universe and then grows with time. This constitutes an "inverse quintessence scenario", where the universe starts from a zero vacuum energy density state, instead of approaching it in the future.

Original languageEnglish
Article number036
JournalJournal of Cosmology and Astroparticle Physics
Issue number5
StatePublished - 1 May 2013


  • Dark energy theory
  • Dark matter theory

ASJC Scopus subject areas

  • Astronomy and Astrophysics


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