スピーカー：鈴木 優樹 (京大基研D2) 

タイトル：Probing de Sitter Space Using CFT States

アブストラクト：
In this paper we construct CFT states dual to local excitations
in the three-dimensional de Sitter space (dS), called the bulk local
states. We find that the conjugation operation in dS3/CFT2 is notably
different from that in AdS3/CFT2. This requires us to combine two bulk
local states constructed out of different primary states in a CPT-invariant
way. This analysis explains why Green’s functions in the dS Euclidean
vacuum cannot simply be obtained from the Wick rotation of those in AdS. We
also argue that this characteristic feature explains the emergence of time
coordinate from the dual Euclidean CFT. We show that the information metric
for the quantum estimation of bulk coordinate values replicates the de
Sitter space metric.