Generalized m-body mean-field projections for classical simulation of d-dimensional Heisenberg-picture dynamics
The research introduces state-adapted Pauli propagation using generalized m-body mean-field projections to simulate high-dimensional classical Heisenberg dynamics. It uses a covariance geometry derived from an initial state to compress observables into sparse, low-body representations. This method outperforms standard Hilbert–Schmidt truncation by exploiting state-dependent complexity measures, leading to more accurate simulations.