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Celestial Operator Product Expansions and ${\rm w}_{1+\infty}$ Symmetry for All Spins

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arxiv 2108.07763 v2 pith:777HABRZ submitted 2021-08-17 hep-th

classification hep-th
keywords productcelestialoperatorsymmetrycoefficientsexpansioninftytree-level
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

The operator product expansion of massless celestial primary operators of arbitrary spin is investigated. Poincar\'e symmetry is found to imply a set of recursion relations on the operator product expansion coefficients of the leading singular terms at tree-level in a holomorphic limit. The symmetry constraints are solved by an Euler beta function with arguments that depend simply on the right-moving conformal weights of the operators in the product. These symmetry-derived coefficients are shown not only to match precisely those arising from momentum-space tree-level collinear limits, but also to obey an infinite number of additional symmetry transformations that respect the algebra of ${\rm w}_{1+\infty}$. In tree-level minimally-coupled gravitational theories, celestial currents are constructed from light transforms of conformally soft gravitons and found to generate the action of ${\rm w}_{1+\infty}$ on arbitrary massless celestial primaries. Results include operator product expansion coefficients for fermions as well as those arising from higher-derivative non-minimal couplings of gluons and gravitons.

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Cited by 7 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Light-Front approach to $4d$ massless Higher-Spin interactions

    hep-th 2026-07 conditional novelty 7.5 of 10

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    hep-th 2026-07 conditional novelty 7.0 of 10

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  3. S-algebra in Gauge Theory: Twistor, Spacetime and Holographic Perspectives

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    The celestial S-algebra is shown to unify the twistor, null-infinity, and twisted-holography descriptions of self-dual Yang-Mills, with new two-helicity charges and a nonlinear extrapolate dictionary.

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    Hodges' all-multiplicity graviton MHV determinant is exactly generated by a one-particle recursion that takes the form of an Lw_{1+∞} Ward identity.

  7. Multi-Particle Contributions to the Celestial Algebra in the ${\cal N}=8$ Supergravity

    hep-th 2026-07 conditional novelty 5.0 of 10

    Multi-particle OPEs of single-particle celestial operators with two-particle operators in N=8 supergravity yield ninety-five (anti)commutators of the soft current algebra plus amplitude relations.

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