Self--ality in dimensions
Phys. Rev. B 113, 155144 – Published 21 April, 2026
DOI: https://doi.org/10.1103/rqny-svlk
Abstract
We explore topological manipulations in one spatial dimension, which are defined for a system with a global symmetry and map the system to another one with a dual symmetry. In particular, we discuss fusion category symmetries enhanced by the invariance of the actions of topological manipulations, i.e., self--alities for topological manipulations. Based on the self--ality conditions, we provide LSM-type constraints on the ground states of many-body Hamiltonians. We clarify the relationship between different enhanced symmetries and how they are further enhanced when they meet. We explore concrete lattice models for such self--alities and identify how the self--ality structures match the IR critical theories.