Oscillations in the CMB from Axion Monodromy Inflation

  title={Oscillations in the CMB from Axion Monodromy Inflation},
  author={Raphael Flauger and Liam McAllister and Enrico Pajer and Alexander Westphal and Gang Xu},
We study the CMB observables in axion monodromy inflation. These well-motivated scenarios for inflation in string theory have monomial potentials over super-Planckian field ranges, with superimposed sinusoidal modulations from instanton effects. Such periodic modulations of the potential can drive resonant enhancements of the correlation functions of cosmological perturbations, with characteristic modulations of the amplitude as a function of wavenumber. We give an analytical result for the… CONTINUE READING
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