Minimal Warm Inflation

  title={Minimal Warm Inflation},
  author={Kim V. Berghaus and Peter W. Graham and David Elazzar Kaplan},
Slow-roll inflation is a successful paradigm. However we find that even a small coupling of the inflaton to other light fields can dramatically alter the dynamics and predictions of inflation. As an example, the inflaton can generically have an axion-like coupling to gauge bosons. Even relatively small couplings will automatically induce a thermal bath during inflation. The thermal friction from this bath can easily be stronger than Hubble friction, significantly altering the usual predictions… CONTINUE READING

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