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- Title
Quintessence and tachyon dark energy in interaction with dark matter: Observational constraints and model selection.
- Authors
Micheletti, Sandro M. R.
- Abstract
We derive two field theory models of interacting dark energy, one in which dark energy is associated with the quintessence and another in which it is associated with the tachyon. In both, instead of choosing arbitrarily the potential of scalar fields, these are specified implicitly by imposing that the dark energy fields must behave as the new agegraphic dark energy. The resulting models are compared with the Pantheon supernovae sample, CMB distance information from Planck 2015 data, baryonic acoustic oscillations (BAO) and Hubble parameter data. For comparison, the noninteracting case and the Λ CDM model also are considered. By use of the AIC and BIC criteria, we have obtained strong evidence in favor of the two interacting models, and the coupling constants are nonvanishing at more than 3 σ confidence level.
- Subjects
HUBBLE Space Telescope (Spacecraft); DARK matter; DARK energy; HUBBLE constant; COUPLING constants; SCALAR field theory; CURVED spacetime
- Publication
International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology, 2020, Vol 29, Issue 8, pN.PAG
- ISSN
0218-2718
- Publication type
Article
- DOI
10.1142/S0218271820500571