Alleviation of the Fermion-Sign Problem by Optimization of Many-Body Wave Functions
Alleviation of the Fermion-Sign Problem by Optimization of Many-Body Wave Functions
We present a simple, robust, and highly efficient method for optimizing all parameters of many-body wave functions in quantum Monte Carlo calculations, applicable to continuum systems and lattice models. Based on a strong zero-variance principle, diagonalization of the Hamiltonian matrix in the space spanned by the wave function and its …