Proposes a duality between AdS3 gravity with dS2 branes and CFT2 with non-unitary boundary conditions to realize dS holography via complex saddles and state preparation in unitary AdS/CFT.
Thanks to the time reflection symmetry with respect toτ= 0, it realizes a density matrixρ=e −LHCFT/2|B⟩⟨ ¯B|e−LHCFT/2 atτ= 0
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Monitoring a de Sitter universe through an anti-de Sitter window
Proposes a duality between AdS3 gravity with dS2 branes and CFT2 with non-unitary boundary conditions to realize dS holography via complex saddles and state preparation in unitary AdS/CFT.