Cracks in the Standard Cosmological Model: Anomalies, Tensions, and Hints of New Physics

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• Eleonora Di Valentino (University of Sheffield)
• Monday 02 June 2025, 13:00-14:00
• SPECIAL LOCATION - CMS, MR4, Pav A basement.

If you have a question about this talk, please contact Thomas Colas.

The ΛCDM model has long served as the standard paradigm in cosmology, offering a remarkably successful description of the Universe’s evolution. Yet, as observational precision continues to improve, persistent tensions have emerged across a range of probes, including the well-known Hubble constant discrepancy. While individual datasets may each align with ΛCDM, their collective interpretation reveals significant discordances that challenge the model’s internal consistency. In this talk, I will review the most prominent tensions in modern cosmology and assess their implications. I will present recent results pointing to hints of dynamical dark energy and interactions within the dark sector. I will also reflect on the growing influence of methodological choices, such as dataset selection and model assumptions, in shaping our cosmological conclusions.

This talk is part of the Cosmology Lunch series.

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