Abstract
This paper presents a worldsheet theory describing holomorphic maps to twistor space with \( \mathcal{N} \) fermionic directions. The theory is anomaly free when \( \mathcal{N} \) = 8. Via the Penrose transform, the vertex operators correspond to an \( \mathcal{N} \) = 8 Einstein supergravity multiplet. In the first instance, the theory describes gauged supergravity in AdS4. Upon taking the flat space, ungauged limit, the complete classical S-matrix is recovered from worldsheet correlation functions.
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Skinner, D. Twistor strings for \( \mathcal{N} \) = 8 supergravity. J. High Energ. Phys. 2020, 47 (2020). https://doi.org/10.1007/JHEP04(2020)047
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DOI: https://doi.org/10.1007/JHEP04(2020)047