Modified gravity in the presence of matter creation: scenario for the late Universe

Abstract

We consider a dynamic scenario for characterizing the late Universe evolution, aiming to mitigate the Hubble tension. Specifically, we consider a metric $f(R)$ gravity in the Jordan frame which is implemented to the dynamics of a flat isotropic Universe. This cosmological model incorporates a matter creation process, due to the time variation of the cosmological gravitational field. We model particle creation by representing the isotropic Universe (specifically, a given fiducial volume) as an open thermodynamic system. The resulting dynamical model involves four unknowns: the Hubble parameter, the non-minimally coupled scalar field, its potential, and the energy density of the matter component. We impose suitable conditions to derive a closed system for these functions of the redshift. In this model, the vacuum energy density of the present Universe is determined by the scalar field potential, in line with the modified gravity scenario. Hence, we construct a viable model, determining the form of the $f(R)$ theory a posteriori and appropriately constraining the phenomenological parameters of the matter creation process to eliminate tachyon modes. Finally, by analyzing the allowed parameter space, we demonstrate that the Planck evolution of the Hubble parameter can be reconciled with the late Universe dynamics, thus alleviating the Hubble tension.

8 pages, 3 figures

References in corpus (25)

• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km/s/Mpc Uncertainty from the Hubble Space Telescope and the SH0ES Team
• In the Realm of the Hubble tension $-$ a Review of Solutions
• The Pantheon+ Analysis: Cosmological Constraints
• The Pantheon+ Analysis: The Full Dataset and Light-Curve Release
• On the Hubble constant tension in the SNe Ia Pantheon sample
• Seven hints that early-time new physics alone is not sufficient to solve the Hubble tension
• The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: BAO and RSD measurements from anisotropic clustering analysis of the Quasar Sample in configuration space between redshift 0.8 and 2.2
• f(R) Gravity and Chameleon Theories
• To H0 or not to H0?
• On the evolution of the Hubble constant with the SNe Ia Pantheon Sample and Baryon Acoustic Oscillations: a feasibility study for GRB-cosmology in 2030
• The evidence for a spatially flat Universe
• Running Hubble Tension and a H0 Diagnostic
• Analyzing the $H_0$ tension in $F(R)$ gravity models
• Hints of a Local Matter Underdensity or Modified Gravity in the Low $z$ Pantheon data
• Phantom behavior via cosmological creation of particles
• Omnipotent dark energy: A phenomenological answer to the Hubble tension
• Cosmic acceleration without dark energy: Background tests and thermodynamic analysis
• Reducing the uncertainty on the Hubble constant up to 35\% with an improved statistical analysis: different best-fit likelihoods for Supernovae Ia, Baryon Acoustic Oscillations, Quasars, and Gamma-Ray Bursts
• Integral $F(R)$ Gravity and Saddle Point Condition as a Remedy for the $H_0$-tension
• Inflation, the Hubble Tension and Early Dark Energy: an alternative overview
• Slow-rolling scalar dynamics and as solution for the Hubble tension
• Dark matter solution to the $H_0$ and $S_8$ tensions, and the integrated Sachs-Wolfe void anomaly
• Gravitationally induced particle production and its impact on structure formation
• Gravitational particle production and the Hubble tension

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• The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
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• Multidimensionality of the Hubble tension: the roles of ${\Omega }_m$ and ${\omega }_c$
• Planck-PR4 anisotropy spectra show (better) consistency with General Relativity
• The effective running Hubble constant in SNe Ia as a marker for the dark energy nature
• Decay of $f(R)$ quintessence into dark matter: mitigating the Hubble tension?
• Gravitational particle production and the Hubble tension
• Decay of dark energy into dark matter in a metric $f(R)$ gravity: effective running Hubble constant
• Inflation in non-local hybrid metric-Palatini gravity
• Reheating constraints and the $H_0$ tension in Quintessential Inflation
• Matter Creation Cosmologies and Accelerated Expansion
• The Hubble Tension: Relativistic Dark Matter Production from Long-lived Particles
• Running Einstein Constant and a Possible Vacuum State of the Universe
• Revisiting the Matter Creation Process: Observational Constraints on Gravitationally Induced Dark Energy and the Hubble Tension