Probing de Sitter Space Using CFT States
arXiv:2405.14237 · doi:10.1007/JHEP02(2025)093
Abstract
In this paper we construct CFT states describing a putative holographic dual to local excitations in the three-dimensional de Sitter space (dS), called the bulk local states. We find that the conjugation operation in dSCFT is notably different from that in AdSCFT. 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 a 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.
37 pages, minor changes in version 2, typos corrected and clarifications added for better readability in version 3, two figures added to aid understanding in version 4, citations added in version 5
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