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de Sitter Gluon Correlators in Momentum Space
Abstract
We show a new diagrammatic representation of tree-level wavefunction coefficients for gluons in four-dimensional de Sitter space at any multiplicity. Its ``disc diagrams" make the cutting rule manifest, while the remaining contact term is fixed by the absence of folded singularities. We determine this term for configurations with zero, one and two negative-helicity gluons. It simplifies as more gluons share a helicity, and it vanishes for all-plus. We illustrate the expansion at four and five points, attach explicit results up to eight points all-plus, and relate it to Grassmannian residues.
Related
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BibTeX
@misc{nabavi2026sitter,
title = {{de Sitter Gluon Correlators in Momentum Space}},
author = {Melvyn Nabavi and Guilherme L. Pimentel and Facundo Rost and Marcelo dos Santos and Jaroslav Trnka},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.28724},
eprint = {2610.28724},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.28724},
}
RIS
TY - UNPB
TI - de Sitter Gluon Correlators in Momentum Space
AU - Melvyn Nabavi
AU - Guilherme L. Pimentel
AU - Facundo Rost
AU - Marcelo dos Santos
AU - Jaroslav Trnka
PY - 2026
DA - 2026/10/20
PB - arXiv
DO - 10.48550/arxiv.2610.28724
UR - https://arxiv.org/abs/2610.28724
AB - We show a new diagrammatic representation of tree-level wavefunction coefficients for gluons in four-dimensional de Sitter space at any multiplicity. Its ``disc diagrams" make the cutting rule manifest, while the remaining contact term is fixed by the absence of folded singularities. We determine this term for configurations with zero, one and two negative-helicity gluons. It simplifies as more gluons share a helicity, and it vanishes for all-plus. We illustrate the expansion at four and five points, attach explicit results up to eight points all-plus, and relate it to Grassmannian residues.
ER -