External Magnetic Fields in QFT: A Non-Perturbative Approach
  A discussion of the influence of boundaries and scalar field interactions in the non-perturbative dynamics of fermions in an external magnetic field, along with their possible applications to condensed matter and cosmology, is briefly presented. The significance of the results for electroweak baryogenesis in the presence of an external magnetic field is indicated. 
Vivian de la Incera