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Peer-reviewedCC BY 4.0Journal of High Energy Physics

Exact and finite de Sitter QFT from CFT

  • Haitang Yang1
  1. 1Sichuan University
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Abstract

A bstract : Parallel to the AdS Scale-Space construction in [1], 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.

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Cite

BibTeXRIS
BibTeX
@article{yang2026exact,
  title = {{Exact and finite de Sitter QFT from CFT}},
  author = {Haitang Yang},
  journal = {Journal of High Energy Physics},
  year = {2026},
  month = oct,
  doi = {10.1007/jhep10(2026)020},
  url = {https://link.springer.com/10.1007/JHEP10(2026)020},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Exact and finite de Sitter QFT from CFT
AU  - Haitang Yang
PY  - 2026
DA  - 2026/10/01
JO  - Journal of High Energy Physics
DO  - 10.1007/jhep10(2026)020
UR  - https://link.springer.com/10.1007/JHEP10(2026)020
AB  - A bstract : Parallel to the AdS Scale-Space construction in [1], 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.
SN  - 1029-8479
ER  -