Gauge-preheating and the end of axion inflation

@article{Adshead2015GaugepreheatingAT,
  title={Gauge-preheating and the end of axion inflation},
  author={Peter Adshead and John T. Giblin and Timothy R. Scully and Evangelos I. Sfakianakis},
  journal={Journal of Cosmology and Astroparticle Physics},
  year={2015},
  volume={2015},
  pages={034-034}
}
We study the onset of the reheating epoch at the end of axion-driven inflation where the axion is coupled to an Abelian, U(1), gauge field via a Chern-Simons interaction term. We focus primarily on m22 inflation and explore the possibility that preheating can occur for a range of coupling values consistent with recent observations and bounds on the overproduction of primordial black holes. We find that for a wide range of parameters preheating is efficient. In certain cases the inflaton… 
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