Preheating after modular inflation

@article{Barnaby2009PreheatingAM,
  title={Preheating after modular inflation},
  author={Neil Barnaby and J. Richard Bond and Zhiqi Huang and Lev Kofman},
  journal={Journal of Cosmology and Astroparticle Physics},
  year={2009},
  volume={2009},
  pages={021-021}
}
We study (p)reheating in modular (closed string) inflationary scenarios, with a special emphasis on Kahler moduli/Roulette models. It is usually assumed that reheating in such models occurs through perturbative decays. However, we find that there are very strong non-perturbative preheating decay channels related to the particular shape of the inflaton potential (which is highly nonlinear and has a very steep minimum). Preheating after modular inflation, proceeding through a combination of… 

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