Electromagnetic Currents from Electroweak Fermion Level Crossing
  Spectral flow of chiral fermions in the background of electroweak sphalerons
is studied. A fermion field configuration that interpolates between the
sphaleron zero mode and the asymptotic fermion modes is proposed for the level
crossing left handed fermion fields. It is shown that the fermionic
electromagnetic currents with non-trivial helicity are produced during the
level crossing. Cosmic magnetic field generation due to these currents is
briefly discussed.
