Published August 9, 2025 | Version 1.0
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Multi-Phase Expansion Model v1.0: A Modified Cosmological Framework for Late-Time Acceleration

Creators

  • 1. Cosmic Horizons

Description

This report introduces the Multi-Phase Expansion Model (MPEM), a modified cosmological framework that proposes distinct expansion phases to account for observed deviations from ΛCDM predictions. Incorporating recent DESI and Euclid constraints, the model refines the late-time expansion history while maintaining consistency with early-universe observations. Mathematical formulations, observational tests, and parameter estimates are provided, alongside implications for cosmic acceleration and potential extensions of general relativity.

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Additional details

Dates

Created
2025-08-09
"Version 1.0 release".

References

  • 1. Padmanabhan, T. (2012). Emergence and Expansion of Cosmic Space as due to the Quest for Holographic Equipartition. arXiv:1206.491Ryu2. Ryu, S., & Takayanagi, T. (2006). Holographic Derivation of Entanglement Entropy from the Anti-de Sitter Space/Conformal Field Theory Correspondence. Phys. Rev. Lett., 96(18), 181602.
  • 2. Cai, Y.-F., et al. (2020). Oscillating Dark Energy. JCAP, 04, 005.
  • 3. Hindmarsh, M., et al. (2021). Phase Transitions in the Early Universe. Phys. Rev. Lett., 127, 101301.
  • 4. DESI Collaboration. (2023). Year 1 Cosmology Forecasts. arXiv:2306.06307.
  • 5. Verlinde, E. (2017). Emergent Gravity and the Dark Universe. SciPost Physics, 2(3), 016.
  • 6. Euclid Consortium. (2022). Euclid Mission Performance Forecasts. arXiv:2205.08788