Can interacting dark energy solve the H 0 tension

By E. di Valentino, A. Melchiorri, O. Mena. 2017

324 citations recorded by the source corpus.

The answer is Yes! We indeed find that interacting dark energy can alleviate the current tension on the value of the Hubble constant $H_0$ between the Cosmic Microwave Background anisotropies constraints obtained from the Planck satellite and the recent direct measurements reported by Riess et al. 2016. The combination of these two datasets points towards an evidence for a non-zero dark matter-dark energy coupling $\xi$ at more than two standard deviations, with $\xi=-0.26_{-0.12}^{+0.16}$ at $95\%$ CL. However the $H_0$ tension is better solved when the equation of state of the interacting dark energy component is allowed to freely vary, with a phantom-like equation of state $w=-1.184\pm0.064$ (at $68 \%$ CL), ruling out the pure cosmological constant case, $w=-1$, again at more than two standard deviations. When Planck data are combined with external datasets, as BAO, JLA Supernovae Ia luminosity distances, cosmic shear or lensing data, we find good consistency with the cosmological constant scenario and no compelling evidence for a dark matter-dark energy coupling.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/05f611c30d34f545ce90a463bba73a72479eb544

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Citations in the corpus

Interacting scenarios with dynamical dark energy: Observational constraints and alleviation of the H0 tension (2019, background): “This motivates us to consider a wider picture in which the interaction should be allowed too, and to check whether the H0 tension is still released, since it has been argued that an allowance of a non-gravitational interaction between dark matter and dark energy naturally increases the error bars on”
Implications of an extended dark energy cosmology with massive neutrinos for cosmological tensions (2018, background): “Extra relativistic degrees of freedom sufficient to recover the low-redshift value of H0 are ruled out within ΛCDM by Planck polarization data and BAO measurements [17, 32].”
Interacting dark energy in the early 2020s: A promising solution to the H0 and cosmic shear tensions (2019, methodology): “nvector problem, and studying the modes which dominate the time evolution (which in this case will be those corresponding to the largest eigenvalue). These initial conditions turn out to be (see e.g. [172, 244, 257, 261, 264]): in x () = 3 2 (2˘ 1 w)(1 + w+ ˘=3) 12w2 2w 3w˘+ 7˘ 14 in (); (8) in x (x”
Tale of stable interacting dark energy, observational signatures, and the H0 tension (2018, background): “More interestingly still, such an interaction between the dark components has been shown to be potentially able to reconcile some of the persisting tensions between high- and low-redshift cosmological observables [83, 86], such as the tension between cosmic microwave background (CMB) [87, 88] and lo”
Modified Gravity and Cosmology (2021, background): “This results in the so-called H0 tension, a concern that has been around for some years now and that does not cease to be a lively source of controversy, quite the opposite [1].”
Nonminimal dark sector physics and cosmological tensions (2019, background): “[222] E.”
Measuring the Hubble constant with Type Ia supernovae as near-infrared standard candles (2017, background): “…physics”, including possibilities like additional species of relativistic particles, non-zero curvature, dark radiation or even a modification of the equations of general relativity (e.g., see Verde et al. 2017; Di Valentino et al. 2017; Sasankan et al. 2017; Dhawan et al. 2017a; Renk et al. 2017).”
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): “[53] E.”
Sounds Discordant: Classical Distance Ladder and ΛCDM-based Determinations of the Cosmological Sound Horizon (2018, background): “On the other hand, Di Valentino et al. (2016, 2017) and Joudaki et al. (2017) used an extended parameter space and pointed out that an interacting phantom-like dark energy with an equation of state wDE<−1 can also reduce the tension in H0 measurements.”