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Quantum Monte Carlo Method using Phase-Free Random Walks with Slater Determinants

Quantum Monte Carlo Method using Phase-Free Random Walks with Slater Determinants

We develop a quantum Monte Carlo method for many fermions that allows the use of any one-particle basis. It projects out the ground state by random walks in the space of Slater determinants. An approximate approach is formulated to control the phase problem with a trial wave function $|\Psi_T>$. Using …