PIRSA:12110078

Video URL

http://pirsa.org/12110078

Holography for inflation using conformal perturbation theory.

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

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

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

Paul McFadden Newcastle University

Source Repository PIRSA
Collection
Talk Type Scientific Series
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.