Did the Universe Experienced a Pressure non-Crushing Type Cosmological Singularity in the Recent Past?

Abstract

In the recent literature it has been shown that the $H_0$ tension may be eliminated if an abrupt physics transition changed the Cepheid parameters in the near past of the Universe, nearly $70-150$Myrs ago. In this letter we stress the possibility that this abrupt transition was caused by the smooth passage of our Universe through a pressure finite-time cosmological singularity. Being a non-crushing type singularity the pressure singularity can leave its imprints in the Universe, since it occurs globally and literally everywhere. We discuss how this scenario could easily be realized by $F(R)$ gravity, with the strong energy conditions being satisfied without the need for a scalar field or specific matter fluids. We also stress the fact that the pressure singularity can affect the effective gravitational constant of $F(R)$ gravity. Moreover, we stress the fact that pressure singularities can disrupt the trajectories of bound objects in the Universe, which is also pointed out in the literature, even in the context of general relativity. We also show numerically in a general relativistic framework that elliptic trajectories are distorted and changed to different elliptic trajectories when the Universe passes through the pressure singularity. Such a disruption of the trajectories could have tidal effects on the surface of the earth, for example on sea waters and oceans, regarding the distortion of moon's elliptic trajectory. Accordingly, the distortion of earth's trajectory around the sun could have affected climatologically earth $70-150$Myrs ago.

EPL Accepted

References in corpus (10)

• Cosmographic bounds on the cosmological deceleration-acceleration transition redshift in $f(\mathcal{R})$ gravity
• Worse than a big rip?
• Quantum phantom cosmology
• Avoidance of Big Rip In Phantom Cosmology by Gravitational Back Reaction
• Cosmic history of viable exponential gravity: Equation of state oscillations and growth index from inflation to dark energy era
• Singular Inflation
• A quantitative analysis of singular inflation with scalar-tensor and modified gravity
• The fate of bound systems through Sudden Future Singularities
• Finite time future singularities in the interacting dark sector
• Is the Hubble crisis connected with the extinction of dinosaurs?

Cited by in corpus (31)

• Seven hints that early-time new physics alone is not sufficient to solve the Hubble tension
• Is the Observable Universe Consistent with the Cosmological Principle?
• Is Local $H_0$ At Odds With Dark Energy EFT?
• Finite-time Cosmological Singularities and the Possible Fate of the Universe
• Gaussian processes and effective field theory of $f(T)$ gravity under the $H_0$ tension
• Multidimensionality of the Hubble tension: the roles of ${\Omega }_m$ and ${\omega }_c$
• Combining pre- and post-recombination new physics to address cosmological tensions: case study with varying electron mass and sign-switching cosmological constant
• Early Dark Energy with Power-law F(R) Gravity
• Machine learning constraints on deviations from general relativity from the large scale structure of the Universe
• Stepped Partially Acoustic Dark Matter, Large Scale Structure, and the Hubble Tension
• Recent advances in cosmological singularities
• Gravitational transitions via the explicitly broken symmetron screening mechanism
• Solving the $H_0$ tension in $f(T)$ Gravity through Bayesian Machine Learning
• The Unsettled Number: Hubble's Tension
• Planck-PR4 anisotropy spectra show (better) consistency with General Relativity
• Singularity formation in asymptotically safe cosmology with inhomogeneous equation of state
• Does the fraction of dark matter diminish with early dark energy?
• Cosmological singularities in $f(T,\varphi )$ gravity
• Hubble constant by natural selection: Evolution chips in the Hubble tension
• New perspectives on future rip scenarios with holographic dark energy
• Resilience and implications of adiabatic CMB cooling
• Type V singularities with inhomogeneous equations of state
• 2D BAO vs 3D BAO: Hints for new physics?
• Equality scale-based and sound horizon-based analysis of the Hubble tension
• Another look on the connections of Hubble tension with the Heisenberg Uncertainty Principle
• Rips and regular future scenario with Holographic Dark Energy: A comprehensive look
• Solving the Hubble tension à la Ellis & Stoeger 1987
• On rips and cosmological singularities in a universe merging with baby universes
• Periodic orbits and gravitational waveforms of black holes in bumblebee gravity
• Nature-inspired optimization, the Philippine Eagle, and cosmological parameter estimation
• Sample Variance for Supernovae Distance Measurements and the Hubble tension