スピーカー：瀧 祐介(京大基研D1)

タイトル：CFT duals of three-dimensional de Sitter gravity

アブストラクト：
dS/CFT correspondence, a holographic duality for de Sitter gravity, has not
been well understood compared to AdS/CFT. We propose a class of dS/CFT
correspondence between three-dimensional de Sitter spaces and
two-dimensional CFTs. We argue that such a CFT includes an SU(2) WZW model
in the critical level limit k->-2, which corresponds to the classical limit
of the gravity side. This dS/CFT can be generalized to the higher-spin
gravity on de Sitter space, which is dual to SU(N) WZW model with the limit
k->-N. We confirm that under this proposed duality the classical partition
functions in the gravity side can be reproduced from CFT calculations.
Moreover, we analyze two-point functions and entanglement entropy in our
dS/CFT correspondence.