Super-Hubble de Sitter Fluctuations and the Dynamical

@inproceedings{Burgess2016SuperHubbleDS,
  title={Super-Hubble de Sitter Fluctuations and the Dynamical},
  author={Patrick Burgess and Louis Leblond and Richard Holman and Sarah E. Shandera},
  year={2016}
}
Perturbative corrections to correlation functions for interacting theories in de Sitter spacetime often grow secularly with time, due to the properties of fluctuations on super-Hubble scales. This growth can lead to a breakdown of perturbation theory at late times. We argue that Dynamical Renormalization Group (DRG) techniques provide a convenient framework for interpreting and resumming these secularly growing terms. In the case of a massless scalar field in de Sitter with quartic self… CONTINUE READING

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