Constraining a dark matter and dark energy interaction scenario with a dynamical equation of state

Abstract

In this work we have used the recent cosmic chronometers data along with the latest estimation of the local Hubble parameter value, $H_0$ at 2.4\% precision as well as the standard dark energy probes, such as the Supernovae Type Ia, baryon acoustic oscillation distance measurements, and cosmic microwave background measurements (PlanckTT $+$ lowP) to constrain a dark energy model where the dark energy is allowed to interact with the dark matter. A general equation of state of dark energy parametrized by a dimensionless parameter `$\beta$' is utilized. From our analysis, we find that the interaction is compatible with zero within the 1$\sigma$ confidence limit. We also show that the same evolution history can be reproduced by a small pressure of the dark matter.

Accepted for publication in Physical Review D

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Cited by in corpus (9)

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• Searching for dark matter - dark energy interactions: going beyond the conformal case
• Constraining interacting dark energy with CMB and BAO future surveys
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• Non-parametric reconstruction of interaction in the cosmic dark sector
• Fractional dark energy
• Constraints On Dark Energy Models From Galaxy Clusters and Gravitational Lensing Data
• Perturbations In Some Dark Energy Models