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Strings on Celestial Sphere

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arxiv 1806.05688 v2 pith:MFU7YBPP submitted 2018-06-14 hep-th

Stephan Stieberger , Tomasz R. Taylor This is my paper · ORCID
classification hep-th
keywords spherecelestialsuperstringamplitudesconformaltheoryassociatedasymptotic
verification ladder T0 review T1 audit T2 compute T3 formal

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We transform superstring scattering amplitudes into the correlation functions of primary conformal fields on two-dimensional celestial sphere. The points on celestial sphere are associated to the asymptotic directions of (light-like) momenta of external particles, with the Lorentz group realized as the SL(2,C) conformal symmetry of the sphere. The energies are dualized through Mellin transforms into the parameters that determine dimensions of the primaries. We focus on four-point amplitudes involving gauge bosons and gravitons in type I open superstring theory and in closed heterotic superstring theory at the tree-level.

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Cited by 6 Pith papers

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

  1. Light and Shadow OPEs: A Carroll Symmetric Approach to Flat Holography

    hep-th 2025-06 conditional novelty 7.0 of 10

    Translation symmetry alone fixes the scaling dimension and leading OPE coefficient for light-transformed Carrollian primaries, matching known graviton, gluon, and Einstein-Yang-Mills results.

  2. Conformal blocks from celestial graviton amplitudes

    hep-th 2025-01 conditional novelty 7.0 of 10

    The authors construct a single-valued celestial four-graviton correlator from the shadow transform, decompose it into conformal blocks in all channels, and show it is the double copy of the corresponding gluon object.

  3. Worldsheet CFT$_2$ and Celestial CFT$_2$ : An AdS$_3$-CFT$_2$ perspective

    hep-th 2025-06 conditional novelty 6.0 of 10

    A near-boundary scaling limit of AdS/CFT is proposed to produce celestial CFTs, and the long-string sector of string theory on AdS3 is identified as a Lorentz-only celestial CFT2.

  4. UV considerations on scattering amplitudes in a web of theories

    hep-th 2019-08 conditional novelty 6.0 of 10

    Tree-level amplitudes in a web of effective field theories are uniquely fixed by locality plus novel single-hard UV scaling constraints, with unitarity emerging in many cases.

  5. The Sky Remembers everything: Celestial amplitude, Shadow and OPE in quadratic EFT of gravity

    hep-th 2025-05 reject novelty 5.0 of 10

    In quadratic gravity, celestial eikonal amplitudes are claimed to be meromorphic rather than distributional, with OPE data extracted from a shadowed correlator.

  6. Topics in Celestial holography: A bottom-up perspective

    hep-th 2026-06 unverdicted novelty 1.0 of 10

    Review of symmetries, celestial CFT, twistor interplay, and AdS/CFT connections in the search for a celestial dual to flat-spacetime quantum gravity.

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