Journal of High Energy Physics

, 2019:213 | Cite as

Ambitwistor string vertex operators on curved backgrounds

  • Tim Adamo
  • Eduardo CasaliEmail author
  • Stefan Nekovar
Open Access
Regular Article - Theoretical Physics


We present vertex operators for ambitwistor strings around generic Yang-Mills, gravity and NS-NS backgrounds. The requirement that vertex operators lie in the BRST cohomology of the worldsheet theory enforces the appropriate linear equations of motion (as well as gauge fixing conditions) for the respective perturbations in these backgrounds. Due to the nature of ambitwistor strings, no approximation is taken and all calculations around the backgrounds are exact.


Conformal Field Models in String Theory Superstrings and Heterotic Strings Supergravity Models Scattering Amplitudes 


Open Access

This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.


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Copyright information

© The Author(s) 2019

Authors and Affiliations

  1. 1.Theoretical Physics Group, Blackett LaboratoryImperial College LondonLondonU.K.
  2. 2.Center for Quantum Mathematics and Physics (QMAP) and Department of PhysicsUniversity of CaliforniaDavisU.S.A.
  3. 3.The Mathematical InstituteUniversity of OxfordOxfordU.K.

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