Census taking in the hat: FRW/CFT duality
Abstract
In this paper a holographic description of eternal inflation is developed. We focus on the description of an open FriedmannRobertsonWalker (FRW) universe that results from a tunneling event in which a false vacuum with positive vacuum energy decays to a supersymmetric vacuum with vanishing cosmological constant. The observations of a “census taker” in the final vacuum can be organized into a holographic dual conformal field theory that lives on the asymptotic boundary of space. We refer to this bulkboundary correspondence as FRW/CFT duality. The dual conformal field theory (CFT) is a Euclidean twodimensional theory that includes a Liouville 2D gravity sector describing geometric fluctuations of the boundary. The renormalizationgroup flow of the theory is richer than in the AdS/CFT correspondence, and generates two spacetime dimensions—one spacelike and one timelike. We discuss a number of phenomena such as bubble collisions, and the Garriga, Guth Vilenkin “persistence of memory,” from the dual viewpoint.
 Publication:

Physical Review D
 Pub Date:
 October 2009
 DOI:
 10.1103/PhysRevD.80.083531
 arXiv:
 arXiv:0908.3844
 Bibcode:
 2009PhRvD..80h3531S
 Keywords:

 98.80.Cq;
 11.25.Mj;
 Particletheory and fieldtheory models of the early Universe;
 Compactification and fourdimensional models;
 High Energy Physics  Theory
 EPrint:
 71 pages, 16 figures. A preliminary version of the ideas in this paper was reported in arXiv:0710.1129