Entanglement spectrum and entropy of the 1D quantum q-state clock model via exact diagonalization and density matrix renormalization group

This work studies the entanglement spectrum and Rényi entropy of the one-dimensional quantum q-state clock model for <em>q</em> = 2 to <em>q</em> = 6 using exact diagonalization (ED) and the density matrix renormalization group (DMRG), implemented with the conserved modular charge <em>k</em> for symmetry resolution.