Symmetries of inflationary magnetogenesis and the plasma initial conditions

@article{Giovannini2012SymmetriesOI,
  title={Symmetries of inflationary magnetogenesis and the plasma initial conditions},
  author={Massimo Giovannini},
  journal={Physical Review D},
  year={2012},
  volume={86},
  pages={103009}
}
As soon as the geometry expands quasi-exponentially the plasma sources are customarily tuned to zero as if the duration of the inflationary phase was immaterial for the gauge field fluctuations at large-scale. The serendipitous disappearance of the plasma (or even the partial neglect of its effects) depends on the symmetries of the system which are, in four space-time dimensions and in the simplest Abelian case, the invariance under Weyl rescaling and the electromagnetic duality symmetry. The… 

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