Description
"Entanglement asymmetry" is an entropic measure of how much a state breaks a certain symmetry. It can be used to study groundstates, as well as excited states, both at equilibrium and out of equilibrium. While initially introduced for ordinary group-like symmetries, in this talk I will describe how to extend its definition to generalized symmetries. I will then discuss some simple examples with non-invertible symmetries in 1+1 dimensions.
