MS Seminar (Mathematics - String Theory)

Speaker: Edgar Shaghoulian (Stanford U.)
Title: Recent advances in dS/CFT
Date: Tue, Apr 22, 2014, 13:15 - 14:45
Place: Seminar Room A
Related File: 1165.pdf
Abstract: dS/CFT is a proposal for understanding quantum gravity in de Sitter spacetime via a dual conformal field theory. I will overview the proposal and speak about recent technical progress in the conjectured duality between four-dimensional higher-spin gravity in the bulk and a free or critical theory of scalars or fermions on the boundary. Specifically, I will discuss an extension of the duality to include Chern-Simons gauge fields and will provide calculational evidence for its validity. A distinct portion of the talk will consist of discussing the case of three-dimensional de Sitter in Einstein gravity; I will provide new evidence for the understanding of the statistical entropy of the cosmological horizon through a count of local operators in the dual field theory.