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PreprintCC BY 4.0arXiv

Exact and Finite de Sitter QFT from CFT

  • Haitang Yang
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Abstract

Parallel to the AdS Scale-Space construction in \cite{Yang: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.

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Cite

BibTeXRIS
BibTeX
@misc{yang2026exact,
  title = {{Exact and Finite de Sitter QFT from CFT}},
  author = {Haitang Yang},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2606.24382},
  eprint = {2606.24382},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2606.24382},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Exact and Finite de Sitter QFT from CFT
AU  - Haitang Yang
PY  - 2026
DA  - 2026/10/12
PB  - arXiv
DO  - 10.48550/arxiv.2606.24382
UR  - https://arxiv.org/abs/2606.24382
AB  - Parallel to the AdS Scale-Space construction in \cite{Yang: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.
ER  -