Speaker
Rudolfs TREILIS
Description
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 conclusion - there are far more local operators that can be defined on a line compared to empty space! We study these operators more carefully in the case of the 1/2 -BPS line in N=4 theory for which we have fat more analytic control.