Detecting Symmetry-Resolved Entanglement: A Quantum Monte Carlo Approach
This work develops an estimator-based Quantum Monte Carlo framework to compute symmetry-resolved Renyi entropies in interacting lattice systems without a sign problem. It achieves this by measuring disorder operators in ordinary and replica ensembles and reconstructing charged moments via Fourier transforms. This allows for the decomposition of total entanglement based on different symmetry sectors.