Generalized Charges, Part II: Non-Invertible Symmetries and the Symmetry TFT

Understand

Consider a d-dimensional quantum field theory (QFT) $\mathfrak{T}$, with a generalized symmetry $\mathcal{S}$, which may or may not be invertible.

• We study the action of $\mathcal{S}$ on generalized or $q$-charges, i.e.
• $q$-dimensional operators.
• The main result of this paper is that $q$-charges are characterized in terms of the topological defects of the Symmetry Topological Field Theory (SymTFT) of $\mathcal{S}$, also known as the ``Sandwich Construction''.