Electric-magnetic duality and the conditions of inflationary magnetogenesis

  title={Electric-magnetic duality and the conditions of inflationary magnetogenesis},
  author={Massimo Giovannini},
  journal={Journal of Cosmology and Astroparticle Physics},
  • M. Giovannini
  • Published 4 November 2009
  • Physics
  • Journal of Cosmology and Astroparticle Physics
The magnetogenesis scenarios triggered by the early variation of the gauge coupling are critically analyzed. In the absence of sources, it is shown that the electric power spectra can be explicitly computed from the magnetic power spectra by means of electric-magnetic duality transformations. In the absence of sources the reverse is also true. The remnants of a pre-inflationary expansion and the reheating process break explicitly electric-magnetic duality by inducing Ohmic currents. The… 

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