Can interacting dark energy with dynamical coupling resolve the Hubble tension

Abstract

The H0 tension between low-and high-redshift measurements is definitely a serious issue faced by current cosmologists since it ranges from 4σ to 6σ. To relieve this tension, in this paper we propose a new interacting dark energy model with time varying coupling parameter by parameterizing the densities of dark matter and dark energy, this parametric approach for interacting dark sectors are inspired by our previous work concerning the coupled generalized three-form dark energy model in which dark matter and dark energy behave like two uncoupled dark sectors with effective equation of state when the three-form |κX| 1, for this reason, we reconstruct coupled generalized threeform dark energy from such parametric model under the condition |κX0|1. In the end, we place constraints on the parametric model with the coupled generalized three-form dark energy model proposed in our previous work in light of the Planck 2018 cosmic microwave background (CMB) distance priors, baryon acoustic oscillations (BAO) data from the Baryon Oscillation Spectroscopic Survey (BOSS) Data Release (DR) 12, Pantheon compilation of Type Ia supernovae (SN Ia) data and the latest local determinations of the Hubble constant from Riess et al., i.e. the so called R20. The fitting results show that, comparing to R20, the parametric model relieves the Hubble tension to 0.05σ with χ 2 min = 6.70 and the coupled generalized three-form dark energy model relieves the Hubble tension to 0.70σ with χ 2 min = 9.02. However, it is worth noting that the tiny Hubble tension between R20 and the parametric model is mostly due to the fact that the introduction of the parameter k greatly increase the uncertainty of the Hubble constant obtained without using a H0 prior.

IWDM: the fate of an interacting non-cold dark matter — vacuum scenario

“…The interacting DM-DE models, widely known as the Interacting Dark Energy (IDE) models/Coupled dark Energy (CDE) models, are very rich both theoretically and observationally. In recent years, IDE models have been extensively investigated by many researchers, which has led to a number of interesting possibilities, including a possible alleviation of the cosmic coincidence problem [31][32][33][34][35][36][37], phantom crossing [38][39][40][41] and recently the alleviation of the cosmological tensions [42][43][44][45][46][47][48][49][50][51][52][53][54][55][56][57][58][59]. We recall that the origin of IDE theory was motivated by a previous proposal by Wetterich in which the author argued that the cosmological constant problem might be solved through an interaction in the cosmic sector [60].…”

Misalignment mechanism for a mass-varying vector boson

“…Due to this fact, the gauged quintessence might relax the drawbacks of quintessence on Hubble tension. Also, recent studies suggest that scenarios containing the couplings between dark energy and dark matter could be a viable solution to Hubble tension [34,35,40,47,77].…”