Reducing the $H_0$ Tension with Exponential Acoustic Dark Energy

Abstract

The Hubble tension arises from different observations between the late-time and early Universe. We explore a new model with dark fluid, called the exponential Acoustic Dark Energy (eADE) model, to relieve the Hubble tension. The eADE model gives an exponential form of the equation of state (EoS) in the acoustic dark energy, which is the first time to explore an exponential form for the EoS. In this model, the gravitational effects from the acoustic oscillations of the model can impact the CMB phenomena at the matter radiation equally epoch. We give the constraints of the eADE model by the current cosmological dataset. The comparison of the phenomena with the standard model can be shown through CMB and matter power spectra. The fitting results of our model have $H_0=70.06_{-1.09}^{+1.13}$ in 95$\%$ C.L. and a smaller best-fit value than $\Lambda$CDM.

References in corpus (20)

• Dynamics of dark energy
• In the Realm of the Hubble tension $-$ a Review of Solutions
• Large Magellanic Cloud Cepheid Standards Provide a 1% Foundation for the Determination of the Hubble Constant and Stronger Evidence for Physics Beyond LambdaCDM
• The Clustering of the SDSS DR7 Main Galaxy Sample I: A 4 per cent Distance Measure at z=0.15
• Cosmology Intertwined II: The Hubble Constant Tension
• Early modified gravity in light of the $H_0$ tension and LSS data
• Unified framework for Early Dark Energy from $\alpha$-attractors
• A larger value for $H_0$ by an evolving gravitational constant
• Interacting neutrinos in cosmology: exact description and constraints
• Scalar-tensor theories of gravity, neutrino physics, and the $H_0$ tension
• Neutrinos help reconcile Planck measurements with both Early and Local Universe
• A $w-M$ phantom transition at $z_t<0.1$ as a resolution of the Hubble tension
• Dynamical dark energy after Planck CMB final release and $H_0$ tension
• No new cosmological concordance with massive sterile neutrinos
• Testing H0 in Acoustic Dark Energy Models with Planck and ACT Polarization
• Partially Acoustic Dark Matter Cosmology and Cosmological Constraints
• Metastable dark energy models in light of Planck 2018: Alleviating the $H_0$ tension
• Touch of Neutrinos on the Vacuum Metamorphosis: is the $H_0$ Solution Back?
• Impacts of dark energy on constraining neutrino mass after Planck 2018
• Constraints on neutrino mass in the scenario of vacuum energy interacting with cold dark matter after Planck 2018

Cited by in corpus (5)

• Challenges for $\Lambda$CDM: An update
• Seven hints that early-time new physics alone is not sufficient to solve the Hubble tension
• The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
• Impact of Low ell's on Large Scale Structure Anomalies
• A new parametrization of Hubble function and Hubble tension