QCD corrections to the electroweak sphaleron rate

par Dietrich Bodeker (Université Bielefeld, Allemagne)

mercredi 23 sept. 2026, 14:00 → 15:00 Europe/Paris

Amphi Charpak (Subatech IMT Atlantique)

Séminaire interne à l'équipe Théorie

In the early Universe baryon number conservation is violated by electroweak sphalerons. These are processes involving electroweak gauge fields with ultrasoft momenta which are non-perturbative.  They can be computed on the lattice with an effective classical field theory. A key parameter in this effective theory is the weak-isospin conductivity. Previously only electroweak interactions have been included in its computation. I describe how it is affected by QCD interations and show the resulting corrections.

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