Hubble tension problem encompassed by phase-space quantum cosmology
arXiv:2607.27285 · doi:10.1016/j.physletb.2026.140645
The paper proposes a phase‑space quantum cosmology framework using Weyl–Wigner mechanics to derive quantum corrections to the Friedmann equation that can reduce the discrepancy between early‑ and late‑time measurements of the Hubble constant.
Abstract
Analytical solutions encompassing the so-called Hubble tension problem are revisited through the framework of Weyl--Wigner quantum mechanics and discussed in the context of generalized phase-space scenarios of quantum cosmology. After reviewing the nature of the problem and its recent developments, an extended formulation constructed within the quantum phase-space framework to address the Hubble tension is proposed. For the quantum cosmology described in the minisuperspace framework through (generic) localized phase-space quantum states, when residual quantum corrections to the Einstein--Friedmann equation are analytically derived, quantum effects are shown to suppress the Hubble tension divergence between early- and late-time predictions. Besides addressing the Hubble tension problem within the standard CDM cosmological model, our approach encompasses generalized quantum cosmological scenarios that also include curvature and dark sector modifications.
21 pages, 4 figures