PIRSA:12110078 Scientific Series Cosmology

DOI10.48660/12110078

Series: Cosmology and Gravitation

McFadden, P. (2012). Holography for inflation using conformal perturbation theory.. Perimeter Institute. https://pirsa.org/12110078

McFadden, Paul. Holography for inflation using conformal perturbation theory.. Perimeter Institute, Nov. 22, 2012, https://pirsa.org/12110078 

@misc{ pirsa_PIRSA:12110078,
  doi = {10.48660/12110078},
  url = {https://pirsa.org/12110078},
  author = {McFadden, Paul},
  keywords = {Cosmology},
  language = {en},
  title = {Holography for inflation using conformal perturbation theory.},
  publisher = {Perimeter Institute},
  year = {2012},
  month = {nov},
  note = {PIRSA:12110078 see, \url{https://pirsa.org}}
}

Abstract

Holographic cosmology maps cosmological time evolution to the inverse RG flow of a dual three-dimensional QFT. In cases where this RG flow connects two closely separated fixed points, QFT correlators may be calculated perturbatively in terms of the conformal field theory associated with one of the fixed points, even when the dual QFT is at strong  coupling.  Realising slow-roll inflation in these terms, we show how to derive standard slow-roll inflationary power spectra and non-Gaussianities through purely holographic calculations. The form of slow-roll inflationary correlators is seen to be determined by the perturbative breaking of conformal symmetry away from the fixed point.

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