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11–13 Jan 2023
Murcia, Spain
Europe/Madrid timezone

BMS flux algebra and loop corrections to soft graviton theorems

13 Jan 2023, 17:20
30m
Universidad de Murcia, Campus de la Merced (Murcia, Spain)

Universidad de Murcia, Campus de la Merced

Murcia, Spain

Paraninfo Campus de la Merced C. Santo Cristo 1 30001 Murcia Spain

Speaker

Nguyen, Kévin (King's College London)

Description

I will discuss recent developments in the characterisation of asymptotic states in asymptotically flat gravity, and the central role played by BMS fluxes in connection to soft graviton theorems. As a result of these new ideas, I will show that the subleading soft graviton theorem including loop effects is the Ward identity associated with superrotations symmetries. We will conclude that BMS symmetries are genuine symmetries of the gravitational S-matrix beyond the classical regime. Based on arXiv:2205.11477.

Presentation materials