Effective horizons, junction conditions and large-scale magnetism

  title={Effective horizons, junction conditions and large-scale magnetism},
  author={Massimo Giovannini},
  journal={The European Physical Journal C},
  • M. Giovannini
  • Published 29 June 2017
  • Physics
  • The European Physical Journal C
The quantum mechanical generation of hypermagnetic and hyperlectric fields in four-dimensional conformally flat background geometries rests on the simultaneous continuity of the effective horizon and of the extrinsic curvature across the inflationary boundary. The junction conditions for the gauge fields are derived in general terms and corroborated by explicit examples with particular attention to the limit of a sudden (but nonetheless continuous) transition of the effective horizon. After… 
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