Twistor Strings for N=8 Supergravity

Understand

This paper presents a worldsheet theory describing holomorphic maps to twistor space with N fermionic directions.

• The theory is anomaly free when N=8.
• Via the Penrose transform, the vertex operators correspond to an N=8 Einstein supergravity multiplet.
• In the first instance, the theory describes gauged supergravity in AdS_4.