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The Hubble Tension and Primordial Magnetic Fields

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If you have a question about this talk, please contact Louis Legrand .

The Hubble tension hints at a missing ingredient in the standard cosmological model describing the universe around the epoch of recombination. A stochastic magnetic field, if present in the plasma prior to last scattering, would induce baryon inhomogeneities and speed up the recombination process, reducing the sound horizon at last scattering and potentially helping to relieve the Hubble tension. I will review this proposal and provide an update on its current status.

This talk is part of the Cosmology Lunch series.

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