Sep 25 – 30, 2023
Protea Hotel King George
Africa/Johannesburg timezone

Upcycled symmetries

Not scheduled
Regency Room (Protea Hotel King George)

Regency Room

Protea Hotel King George

Contributed Oral Presentation Physics Research Parallel Session 1


Hannah Tillim (Johns Hopkins University)


Recent years have seen an explosion of generalisations of the idea of symmetry in particle physics. These include higher form symmetries, higher group symmetries and, in particular, non-invertible symmetries. All of these are characterised by the necessity of moving beyond the groups and into more complicated structures, whose physical implications are not yet fully understood.

In this talk I will give a pedagogical introduction to non-invertible symmetries with illustrative examples in familiar systems (QM and 2d Ising). I will then show how we can recover group structure by exponentiation, and why this is advantageous when calculating observables.

Abstract Category Particle Physics

Primary authors

Hannah Tillim (Johns Hopkins University) Ibrahima Bah (Johns Hopkins University)

Presentation materials