Evolution of matter perturbations in the context of cosmic slowing down

arXiv:2608.04922 · gr-qc, astro-ph.CO · Submitted 2026-08-05 · Read on arXiv

gr-qc, astro-ph.CO

Submitted: 2026-08-05

Updated: 2026-08-05

Comments: 22 pages, 5 tables, 15 figures, to appear in MPLA

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Consistency — 2× in this paper · explained in 3 episodes
• Matter Power Spectrum — 1× in this paper · explained in 2 episodes
• Quintessence — 1× in this paper · explained in 2 episodes
• World Model — 1× in this paper · explained in 7 episodes

Sources

• Planck and the local Universe: quantifying the tension
• Does the Hubble constant tension call for new physics?
• Planck 2015 results. XIII. Cosmological parameters
• Planck 2018 results. VI. Cosmological parameters
• A 2.4% Determination of the Local Value of the Hubble Constant
• Milky Way Cepheid Standards for Measuring Cosmic Distances and Application to Gaia DR2: Implications for the Hubble Constant
• A Lower Growth Rate from Recent Redshift Space Distortion Measurements than Expected from Planck
• Conjoined constraints on modified gravity from the expansion history and cosmic growth
• Cosmology Intertwined III: $f \sigma_8$ and $S_8$
• Early Dark Energy Can Resolve The Hubble Tension
• Can scale-dependent cosmology alleviate the $H_0$ tension?
• Tension and constraints on modified gravity parametrizations of $G_{\textrm{eff}}(z)$ from growth rate and Planck data
• Evolution of the $f\sigma_8$ tension with the Planck15/$\Lambda$CDM determination and implications for modified gravity theories
• Hints of Modified Gravity in Cosmos and in the Lab?
• Tension of the $E_G$ statistic and RSD data with Planck/$\Lambda$CDM and implications for weakening gravity
• Growth of structures and redshift-space distortion data in scale-dependent gravity
• Challenges for $\Lambda$CDM: An update
• Anomalies in Physical Cosmology
• DESI DR2 Results II: Measurements of Baryon Acoustic Oscillations and Cosmological Constraints
• Model independent cosmographic constraints from DESI 2024

Related papers

• Improving Slow-Roll Estimates in Starobinsky Inflation Using an Analytic Hubble Parameter
• Listening to the Horizon: Probing Near-Horizon Reflectivity with GW250114
• A Pairwise Surrogate for Gravitational-Wave Spectra from Highly Relativistic Vacuum Bubble Collisions
• Tests of General Relativity with Einstein Telescope
• A weakly modelled view of the joint compact-binary mass plane: population structure and spectral-siren cosmology
• Unitary quantum matter-bounce in a universe with a positive cosmological constant