S-Matrix and Anomaly of de Sitter

@article{Dvali2021SMatrixAA,
  title={S-Matrix and Anomaly of de Sitter},
  author={Gia Dvali},
  journal={Symmetry},
  year={2021},
  volume={13},
  pages={3}
}
  • G. Dvali
  • Published 3 December 2020
  • Physics
  • Symmetry
S-matrix formulation of gravity excludes de Sitter vacua. In particular, this is organic to string theory. The S-matrix constraint is enforced by an anomalous quantum break-time proportional to the inverse values of gravitational and/or string couplings. Due to this, de Sitter can satisfy the conditions for a valid vacuum only at the expense of trivializing the graviton and closed-string S-matrices. At non-zero gravitational and string couplings, de Sitter is deformed by corpuscular 1/N effects… 

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