Exact and Finite de Sitter QFT from CFT

2026/06/30 by Haitang Yang
#hep-th

paper · pdf

Abstract

Parallel to the AdS Scale-Space construction in \citeYang:2026AdS, we construct a (d+1)-dimensional de Sitter QFT directly from d-dimensional CFT data. The dS geometry is the moduli space of oriented balls, and the lifted operators are obtained by conformal-family Casimir completion. The Euclidean parent CFT gives a finite wavefunction representation, while the Minkowski parent CFT gives a double-time representation that is unitary in the parent-time polarization. This provides a CFT-based framework for reexamining puzzles of dS and double-time QFT.

Citations

• Derive Einstein equation from CFT entanglement entropy
• Entanglement Entropy of Conformal Field Theory in All Dimensions
• Mixed State Entanglement Entropy in CFT
• Realization of "ER=EPR"
• Higher Spin Realization of the dS/CFT Correspondence
• Higher spin realization of the DS/CFT correspondence
• Les Houches Lectures on De Sitter Space
• The dS/CFT correspondence
• Quantum Gravity In De Sitter Space
• Two-Time Physics
• The Large N Limit of Superconformal Field Theories and Supergravity

Related

• Strongly Coupled Quantum Field Theory in Anti-de Sitter Spacetime
• The dS/CFT correspondence
• Ads/CFT correspondence in condensed matter
• Probing de Sitter Space Using CFT States
• de Sitter locality from conformal field theory