Journal
PHYSICAL REVIEW D
Volume 100, Issue 10, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.100.103520
Keywords
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Funding
- Mathematical Research Impact-Centric Support Scheme (MATRICS) [MTR/2018/000940]
- Science and Engineering Research Board (SERB)
- Faculty Research and Professional Development Fund (FRPDF) Scheme of Presidency University, Kolkata, India
- National Natural Science Foundation of China [11705079, 11647153]
- European Research Council [681431, MTR/2017/000407]
- CANTATA COST (European Cooperation in Science and Technology) action [CA15117]
- EU
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We investigate interacting scenarios that belong to a wider class, since they include a dynamical dark energy component whose equation of state follows various one-parameter parametrizations. We confront them with the latest observational data from the cosmic microwave background, the joint light-curve sample from type Ia supernovae, baryon acoustic oscillations, Hubble parameter measurements from cosmic chronometers (CC), and a Gaussian prior on the Hubble parameter H-0. In all examined scenarios we find a nonzero interaction; nevertheless, the noninteracting case is allowed within 2 sigma. Concerning the current value of the dark energy equation of state for all combinations of data sets, it always lies in the phantom regime at more than 2-3 standard deviations. Finally, for all interacting models, independently of the combination of data sets considered, the estimated values of the present Hubble parameter H-0 are greater compared to the Lambda CDM-based Planck estimate and close to the local measurements, thus alleviating the H-0 tension.
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