Constraining strongly coupled quantum field theories using symmetry

Session

Session 2

22 Jan 2026, 16:00

5. The magic of gauge theory: what beasts live on line operators?

Rudolfs TREILIS

22/01/2026, 16:00

By now extended operators have entered the parlance of the working theoretical physicist for well over a decade, playing an important role in areas as diverse as generalised symmetries, the study of confinement, branes in AdS/CFT correspondence and many more. In this talk we begin with a standard dogma - every operator needs to be gauge invariant - and find that it leads us to an interesting...

3. Lightcone Bootstrap for Multipoint Defect Correlators

Mr Andrea Mattiello (Istituto Nazionale di Fisica Nucleare)

22/01/2026, 16:45

We initiate a systematic study of multipoint defect correlators using the lightcone bootstrap, focusing on the simplest non-trivial example: a bulk–bulk–defect three-point function. We analyze the associated crossing equation, which relates the bulk and defect channels, in the lightcone kinematical regime where one bulk insertion approaches the lightcone of the other. In this limit, we derive...