QCD corrections to the electroweak sphaleron rate

par Dietrich Bodeker (Uni Bielefeld)

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

Amphi Kastler

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.