Universal Freezing Transitions of Dipole-Conserving Chains
Universal Freezing Transitions of Dipole-Conserving Chains
We argue for the existence of a universal phase diagram of $k$-local quantum chains subject to the conservation of a total charge and its dipole moment, which exhibits "freezing" transitions between strongly and weakly Hilbert space fragmented phases as charge filling $\nu$ is varied. We show that these continuous phase …