It was recently shown that baryon number in the Standard Model can be efficiently violated at zero temperature, from Higgs bubble collisions in a strongly first-order electroweak phase transition [2508.21825], thus opening up new possibilities of realizing electroweak baryogenesis in models with a low reheat temperature and large bubble wall velocity. In this study, the production of baryon number can be attributed to the dynamics of electroweak textures which are non-trivial Higgs field configurations formed upon spontaneous electroweak symmetry breaking. Textures can decay leading to transitions in the Chern-Simons number, which is converted into baryon number via the Standard Model chiral anomaly. This work has been carried out by relying on large-scale (3+1)D real-time lattice simulations of the Higgs and SU(2)-gauge bosons, where true vacuum critical bubbles are nucleated at initial time.

In this presentation, I will discuss this new source of baryon number violation, as well as its possible implications and further extensions of this work, such as including the hypercharge gauge boson, adding plasma effects, studying the non-runaway regime, and most importantly, adding CP-violation in the simulations.