Speaker
Description
Celestial symmetry algebras arise from the OPEs of soft gravitons giving rise to the so-called `Lw_{1+\infty} algebra'. This talk will explain how this algebra can be can be understood as the local structure preserving local diffeomorphisms of twistor space. This can be naturally deformed to yield analogues with cosmological constant following https://arxiv.org/abs/2403.18011. We also give a brief introduction to twistor space actions to show how Noether arguments can be used to obtain improved associated charge and flux integrals as originally found by Friedel, Pranzetti and Raclariu; this is joint work with Adam Kmec, Romain Ruzziconi and Akshay Yelleshpur-Srikant https://arxiv.org/abs/2407.04028. If there is time there will be some further open-ended discussion of open questions in celestial holography via twistor theory.
External references
- 24070006
- 4278e920-3c3f-4e74-8e0c-b2ef8abea488
