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June 4, 2026Open Access

Testing the Standard Cosmological Model: Late-Universe Constraints on the Clustering of Matter with Early-Universe Priors

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Authors

UUUalype de Andrade UchôaJJJoann JonesSDScott Dodelson

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Overview

Randomized trial investigates the s8 tension in cosmology, suggesting implications for universe physics.

Key Points

  • This research aims to explore the s8 tension between early and late universe observations to understand its origins.
  • Utilized final data release from the Dark Energy Survey for analysis.
  • Employed Bayesian parameter inference with CosmoSIS, incorporating informative Cosmic Microwave Background priors.
  • Assessed the impact of early-universe data on late-universe clustering results.
  • The s8 tension persists when incorporating CMB priors, suggesting data systematics may not fully explain the difference.
  • Analysis reveals insufficient alleviation of the s8 discrepancy, indicating a potential need for physics beyond ΛCDM.

Cite This Study

Uchôa et al. (2026) studied this question.

synapsesocial.com/papers/6a2115d7d499ed480b16ed62https://doi.org/10.6082/6tghx-daz90
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