String Theory Seminars

Asymptotic Symmetries of gravity and soft theorems (Quantum Spacetime Seminar)

by Prof. Alok Laddha ((CMI, Chennai))

Monday, August 29, 2016 from to (Asia/Kolkata)
at DTP Seminar Room ( A 304 )
Description
In 2013, Strominger gave a Proposal for the symmetry group of Quantum Gravity S-matrix, which was derived from the well known BMS (Bondi- Matzner-Sachs) group of classical General Relativity. This work led to a beautiful equivalence between Weinberg's soft graviton theorem in (perturbative) quantum gravity and Ward identities associated to so- called Super- translation symmetries.

In this talk , I will review this and other recent developments which point towards understanding the symmetries of perturbative quantum gravity by analysing various soft theorems.

This talk is based on recent joint work with Miguel Campiglia.
Material: