Vacuum Topology and the Electroweak Phase Transition
  We investigate if the topology of pure gauge fields in the electroweak vacuum
can play a role in classical dynamics at the electroweak phase transition. Our
numerical analysis shows that magnetic fields are produced if the initial
vacuum has non-trivial Chern-Simons number, and the fields are helical if the
Chern-Simons number changes during the phase transition.
