Speaker
Description
I will present the construction of tree-level amplitudes and chiral algebras around curved gauge theory backgrounds and space-times. Gluon two-point amplitudes around a self-dual dyon and graviton two-point amplitudes around self-dual Taub-NUT can be constructed by direct integration of the classical action. Twistor methods allow to extend the construction for MHV amplitudes at all multiplicity and these can be used to infer the celestial OPE around these backgrounds. More generally, I will outline the computation of the celestial chiral algebra around quaternionic Taub-NUT space-time, which includes AdS_4, Eguchi-Hanson, self-dual Taub-NUT and Burns space-times as particular cases.
Link to publication (if applicable)
https://arxiv.org/pdf/2309.03834, https://arxiv.org/pdf/2403.18011 + wip
