Extended Carroll symmetries and effective null dynamics

by Dr Loïc Marsot (Sun Yat-sen University)

Wednesday 14 Jun 2023, 15:00 → 16:00 Asia/Shanghai

B105 (CHEP)

Carroll symmetries and dynamics have recently seen an increase in popularity as they were found to be an effective way to describe some null phenomena in General Relativity. 
In this talk, I will show that the usually trivial-looking Carroll symmetry group becomes richer in 2+1 dimensions, which are the relevant dimensions for physical applications. This richness manifests with two non-trivial central extensions appearing in this case, which then imply the possibility of non-trivial dynamics for Carroll particles.
I will discuss the potential physical implications of such effective particles, and give an example of Carroll motion on the horizon of Kerr-Newman black holes.
This talk is based on arXiv:2110.08489 and arXiv:2207.06302, the latter in collaboration with Pengming Zhang and Peter Horvathy.

Bio:
Loïc Marsot got his PhD from Aix-Marseille University in 2020, then had a post doc in the same place, and now he is in the School of Science on the shenzhen campus of Sun Yat-sen University. He study theoretical physics, mostly looking at unusual symmetries and their geometries.

Tencent Meeting: 285-346-735