PIRSA Logo


PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

Displaying all lectures given by: Kostas Skenderis


PIRSA:20050025  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Holographic cosmology: status report
Speaker(s): Kostas Skenderis
Abstract: I will give an overview of holographic cosmology and discuss recent results and work in progress. In holographic cosmology time evolution is mapped to inverse RG flow of the dual QFT. As such this framework naturally explains the arrow of time via the monotonicity of RG flows. Properties of th... read more
Date: 19/05/2020 - 2:30 pm

PIRSA:17050066  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Towards a general AdS/Ricci-flat correspondence
Speaker(s): Kostas Skenderis
Abstract: The AdS/Ricci-flat (AdS/RF) correspondence is a map between families of asymptotically locally AdS solutions on a torus and families of asymptotically flat spacetimes on a sphere. In this talk I will discuss how to relax these restrictions for linearized perturbations around solutions connected via ... read more
Date: 08/05/2017 - 10:00 am

PIRSA:12050063  ( MP4 Medium Res , MP4 Low Res , MP3 , PDF ) Which Format?
Conformal Gravity and AdS/CFT
Speaker(s): Kostas Skenderis
Abstract: TBA
Date: 10/05/2012 - 3:20 pm

PIRSA:10060013  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Holographic Non-Gaussianity
Speaker(s): Kostas Skenderis
Abstract: We discuss holographic models for the inflationary epoch. We show how cosmological observables such as the primordial spectrum and non-Gaussianities can be computed via computations of correlation functions of a dual three dimensional QFT (without gravity!) We present a general class of models that ... read more
Date: 15/06/2010 - 4:15 pm

PIRSA:09070032  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Holography for cosmology
Speaker(s): Kostas Skenderis
Abstract: We propose a holographic description of four dimensional single scalar inflationary universes, in particular asymptotically de Sitter cosmologies and power-law inflation. We show how cosmological observables such as the primordial power spectrum and non-gaussianities are encoded in correlation funct... read more
Date: 18/07/2009 - 10:00 am

PIRSA:08110031  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Non-conformal holography
Speaker(s): Kostas Skenderis
Abstract: We discuss holography for geometries that are asymptotic to non-conformal brane backgrounds. The near-horizon limit of all non-conformal branes, including D-branes and the fundamental string but excluding five-branes, is conformal to $AdS_{p+2} imes S^{8-p}$ with a linear dilaton. They exhibit a ge... read more
Date: 18/11/2008 - 11:00 am
Valid XHTML 1.0!