An analysis of the $H_0$ tension problem in a universe with a viscous dark fluid

Abstract

In this paper, two inhomogeneous single fluid models for the Universe, which are able to naturally solve the $H_0$ tension problem, are discussed. The analysis is based on a Bayesian Machine Learning approach that uses a generative process. The adopted method allows to constrain the free parameters of each model by using the model itself, only. The observable is taken to be the Hubble parameter, obtained from the generative process. Using the full advantages of our method, the models are constrained for two redshift ranges. Namely, first this is done with mock $H(z)$ data over $z\in [0,2.5]$, thus covering known $H(z)$ observational data, which are most helpful to validate the fit results. Then, aiming to extend to redshift ranges to be covered by the most recent ongoing and future planned missions, the models are constrained for the range $z\in [0,5]$, too. Full validation of the results for this extended redshift range will have to wait for the near future, when higher redshift $H(z)$ data become available. This makes our models fully falsifiable. Finally, our second model here is able to explain the BOSS reported value for $H(z)$ at $z=2.34$.

arXiv comment13 pages, 4 figures

References in corpus (47)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Planck 2015 results. XIII. Cosmological parameters
• Planck 2013 results. XVI. Cosmological parameters
• Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Parameter Results
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample
• Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
• Inhomogeneous Equation of State of the Universe: Phantom Era, Future Singularity and Crossing the Phantom Barrier
• Dark Energy Survey Year 1 Results: Cosmological Constraints from Cosmic Shear
• Milky Way Cepheid Standards for Measuring Cosmic Distances and Application to Gaia DR2: Implications for the Hubble Constant
• Non-minimal dark sector physics and cosmological tensions
• Observational constraints on dark energy with generalized equations of state
• Interacting dark energy in the early 2020s: a promising solution to the $H_0$ and cosmic shear tensions
• Dark Energy Survey Year 1 Results: Cosmological Constraints from Cluster Abundances and Weak Lensing
• Early dark energy from massive neutrinos -- a natural resolution of the Hubble tension
• Viscous Cosmology for Early- and Late-Time Universe
• Next Generation Cosmology: Constraints from the Euclid Galaxy Cluster Survey
• $H_0$ Tension, Phantom Dark Energy and Cosmological Parameter Degeneracies
• Structure formation in $f(T)$ gravity and a solution for $H_0$ tension
• Observational constraints on one-parameter dynamical dark-energy parametrizations and the $H_0$ tension
• Model-independent reconstruction of $f(T)$ gravity from Gaussian Processes
• A deep learning approach to cosmological dark energy models
• Phase Space Analysis of the Accelerating Multi-fluid Universe
• Cosmological Fluids with Logarithmic Equation of State
• The evidence of cosmic acceleration and observational constraints
• Dawn of the dark: unified dark sectors and the EDGES Cosmic Dawn 21-cm signal
• Turbulence and Little Rip Cosmology
• Inflationary universe in terms of a van der Waals viscous fluid
• Can $f(T)$ gravity resolve the $H_0$ tension?
• Warm Decaying Dark Matter and the Hubble Tension
• Effective field description of the Anton-Schmidt cosmic fluid
• Implications of the possible 21-cm line excess at cosmic dawn on dynamics of interacting dark energy
• Testing the equation of state for viscous dark energy
• Bulk viscous embedded hybrid dark energy models
• Phase space analysis and singularity classification for linearly interacting dark energy models
• Constraining the reionization history using deep learning from 21cm tomography with the Square Kilometre Array
• Viscous Fluid Holographic Bounce
• Cosmological singularities in interacting dark energy models with an $\omega (q)$ parametrization
• Studying Type II supernovae as cosmological standard candles using the Dark Energy Survey
• Cosmological model involving an interacting van der Waals fluid
• Hubble constant difference between CMB lensing and BAO measurements
• Scrutinizing Various Phenomenological Interactions In The Context Of Holographic Ricci Dark Energy Models
• Little Rip cosmological models with time-dependent equation of state
• Forecast constraints on Anisotropic Stress in Dark Energy using gravitational-waves
• Interacting Dark Sectors in Anisotropic Universe: Observational Constraints and $H_0$ Tension
• Cosmological models, observational data and tension in Hubble constant
• Accelerated cosmological expansion without tension in the Hubble parameter

Cited by in corpus (26)

• In the Realm of the Hubble tension $-$ a Review of Solutions
• Challenges for $\Lambda$CDM: An update
• Seven hints that early-time new physics alone is not sufficient to solve the Hubble tension
• Consistency tests of $\Lambda$CDM from the early integrated Sachs-Wolfe effect: Implications for early-time new physics and the Hubble tension
• The galaxy power spectrum take on spatial curvature and cosmic concordance
• Soundness of Dark Energy properties
• Gaussian processes and effective field theory of $f(T)$ gravity under the $H_0$ tension
• Alleviating both $H_0$ and ${\sigma }_8$ tensions in Tsallis cosmology
• Constraints on dark matter to dark radiation conversion in the late universe with DES-Y1 and external data
• Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies
• Alleviating $H_0$ Tension with New Gravitational Scalar Tensor Theories
• Alleviating $H_0$ tension in Horndeski gravity
• Solving the $H_0$ tension in $f(T)$ Gravity through Bayesian Machine Learning
• Alleviating $H_0$ tension in scalar-tensor and bi-scalar-tensor theories
• Can the Hubble tension be resolved by bulk viscosity?
• A new Parametrization for Bulk Viscosity Cosmology as Extension of the $\Lambda$CDM Model
• Study of a viscous $\Lambda$WDM model: Near equilibrium condition, entropy production, and cosmological constraints
• Assessing the foundation and applicability of some dark energy fluid models in the Dirac-Born-Infeld framework
• Addressing the Hubble tension in Yukawa cosmology?
• An approach to cold dark matter deviation and the $H_0$ tension problem by using machine learning
• Interplay between Swampland and Bayesian Machine Learning in constraining cosmological models
• Exploring thermodynamics inconsistencies in unimodular gravity: a comparative study of two energy diffusion functions
• Viscous coupled fluids in terms of a log-corrected equation of state
• Late time attractors of some varying Chaplygin gas cosmological models
• Ricci cosmology in light of astronomical data
• Singularities and Soft-Big Bang in a viscous $\Lambda$CDM model