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PreprintCC BY 4.0arXiv

Gluon Scattering in Expanding de Sitter Universe

  • Audrey Lindsay
  • Tomasz R. Taylor
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Abstract

We construct an observer-centric S-matrix in the expanding Poincaré patch of four-dimensional de Sitter space. The asymptotic states are defined along the worldline of a comoving, or eternal, observer, the only kind of geodesic observer that remains in the patch for all proper time, and the free Hamiltonian is the conserved charge generating translations in her proper time. The resulting S-matrix is independent of which eternal observer is chosen. We apply the construction to pure Yang--Mills theory in Coulomb gauge and compute the three- and four-gluon amplitudes at tree level. The amplitudes have a structure similar to the cosmological correlators of gauge currents and are constrained by the Ward identities of de Sitter isometries.

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Cite

BibTeXRIS
BibTeX
@misc{lindsay2026gluon,
  title = {{Gluon Scattering in Expanding de Sitter Universe}},
  author = {Audrey Lindsay and Tomasz R. Taylor},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.20707},
  eprint = {2610.20707},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.20707},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Gluon Scattering in Expanding de Sitter Universe
AU  - Audrey Lindsay
AU  - Tomasz R. Taylor
PY  - 2026
DA  - 2026/10/14
PB  - arXiv
DO  - 10.48550/arxiv.2610.20707
UR  - https://arxiv.org/abs/2610.20707
AB  - We construct an observer-centric S-matrix in the expanding Poincaré patch of four-dimensional de Sitter space. The asymptotic states are defined along the worldline of a comoving, or eternal, observer, the only kind of geodesic observer that remains in the patch for all proper time, and the free Hamiltonian is the conserved charge generating translations in her proper time. The resulting S-matrix is independent of which eternal observer is chosen. We apply the construction to pure Yang--Mills theory in Coulomb gauge and compute the three- and four-gluon amplitudes at tree level. The amplitudes have a structure similar to the cosmological correlators of gauge currents and are constrained by the Ward identities of de Sitter isometries.
ER  -