Interacting scenarios with dynamical dark energy: Observational constraints and alleviation of the H0 tension
By Supriya Pan, Weiqiang Yang, E. di Valentino, Emmanuel N. Saridakis, Subenoy Chakraborty. Physical Review D, 2019
143 citations recorded by the source corpus.
We investigate interacting scenarios which 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 Cosmic Microwave Background (CMB), Joint light-curve (JLA) sample from Supernovae Type Ia, Baryon Acoustic Oscillations (BAO), Hubble parameter measurements from Cosmic Chronometers (CC) and a gaussian prior on the Hubble parameter $H_0$. In all examined scenarios we find a non-zero interaction, nevertheless the non-interacting case is allowed within 2$\sigma$. Concerning the current value of the dark energy equation of state for all combination of datasets it always lies in the phantom regime at more than two/three standard deviations. Finally, for all interacting models, independently of the combination of datasets considered, the estimated values of the present Hubble parameter $H_0$ are greater compared to the $\Lambda$CDM-based Planck's estimation and close to the local measurements, thus alleviating the $H_0$ tension.
Subfields: Astronomy and Astrophysics
View Paper: https://www.semanticscholar.org/paper/2e2cb9466a6a9deb8270c976dad19b098384bf41
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In Astronomy and Astrophysics
Citations in the corpus
- Interacting dark energy in the early 2020s: A promising solution to the H0 and cosmic shear tensions (2019, unknown): “[240–259].”
- New physics in light of the H0 tension: An alternative view (2019, background): “[60–209] for what is inevitably an incomplete list of works examining these possibilities.”
- Cosmology Intertwined II: The Hubble Constant Tension (2020, unknown): “[94] S.”
- Hubble Tension: The Evidence of New Physics (2023, background): “4) IDE with variable DE equation of state [273,323]; (1.”