PIRSA:12110078

Holography for inflation using conformal perturbation theory.

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}}
          }

Paul McFadden

Newcastle University

Talk number
PIRSA:12110078
Collection
Talk Type
Subject
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.