Study of the consistency relation for single-field inflation with power spectrum oscillations

@article{Jackson2013StudyOT,
  title={Study of the consistency relation for single-field inflation with power spectrum oscillations},
  author={M. Jackson and G. Shiu},
  journal={Physical Review D},
  year={2013},
  volume={88},
  pages={123511}
}
  • M. Jackson, G. Shiu
  • Published 2013
  • Physics
  • Physical Review D
  • We derive a theoretical upper bound on the oscillation frequency in the scalar perturbation power spectrum of single-field inflation. Oscillations are most naturally produced by modified vacua with varying phase. When this phase changes rapidly, it induces strong interactions between the scalar fluctuations. If the interactions are sufficiently strong the theory cannot be evaluated using perturbation theory, hence imposing a limit on the oscillation frequency. This complements the bound found… CONTINUE READING
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