What question did this study set out to answer?

The central aim is to address the discrepancy in the Hubble Constant estimates from early and late universe observations.

February 2, 2026Open Access

Resolving the Hubble Tension via Viscoelastic Relaxation: A Non-Equilibrium Solution to the ΛCDM Crisis

Key Points

The central aim is to address the discrepancy in the Hubble Constant estimates from early and late universe observations.
Propose a mechanical solution using the Deus Cosmological Model (DCM)
Analyze spacetime vacuum as a viscoelastic Kelvin-Voigt solid
Examine the implications of bulk viscosity on cosmological measurements
Identified a significant 4σ to 6σ discrepancy in Hubble Constant estimates
Suggested that current models may need revising due to non-zero bulk viscosity
Proposed that viscoelastic properties of spacetime can help explain Hubble Tension

Abstract

Abstract: The persisting 4σ to 6σ discrepancy between early-universe estimates of the Hubble Constant (Planck/CMB: H₀ ≈ 67.4 km/s/Mpc) and late-universe local measurements (SH0ES/SNIa: H₀ ≈ 73.0 km/s/Mpc) suggests a fundamental flaw in the standard ΛCDM concordance model. Current attempts to resolve this "Hubble Tension" typically invoke Early Dark Energy (EDE) or exotic particle physics. This paper proposes a mechanical solution derived from the Deus Cosmological Model (DCM), which posits that the spacetime vacuum is not a Perfect Fluid, but a Viscoelastic Kelvin-Voigt Solid possessing non-zero Bulk Viscosity (ζ).

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