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Resolving the Hubble Tension with Quantum Cosmology

Strategic Insights

— 1 min read

Researchers at the University of Porto have provided a new theoretical explanation for the Hubble tension, a long-standing problem in cosmology. According to their study, published in Physics Letters B, the discrepancy between early- and late-time Universe predictions for the Hubble constant can be resolved using a quantum cosmology framework based on the Weyl-Wigner phase-space quantum approach. This framework circumvents the tension by yielding predictions for H-0 that smoothly interpolate between early- and late-time phenomenological values.

Key Takeaways:

  • The study provides a theoretical explanation for the Hubble tension within the framework of phase-space quantum mechanics extended to (quantum) cosmology.
  • The research concluded that the emergence of quantum-origin corrections, dependent on a single parameter, yields predictions for H-0 that smoothly interpolate between early- and late-time phenomenological values.
  • The study circumvents the discrepancy between early- and late-time Universe predictions for the Hubble constant, H-0, within the framework of quantum cosmology.
  • The financial supporters for this research include Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) and Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ).
  • The study was conducted at the University of Porto, Faculty of Science, Dept. of Physics & Astronomy.

Statistics:

  • The study resolves the Hubble tension using a quantum cosmology framework based on the Weyl-Wigner phase-space quantum approach.
  • The predictions for H-0 yielded by this framework smoothly interpolate between early- and late-time phenomenological values.
  • The research concluded that the emergence of quantum-origin corrections, dependent on a single parameter, yields predictions for H-0 that join the plethora of solutions for the Hubble tension.

Sources:

  • Soft Quantum Back Reaction To the Hubble Tension: a Smeared-out Early Time Cosmological Energy Density. Physics Letters B, 2025;870.
  • University of Porto, Faculty of Science, Dept. of Physics & Astronomy.

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