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Improved efficiency with variational Monte Carlo using two level sampling

A two level sampling method is applied to variational Monte Carlo (VMC) that samples the one and two body parts of the wave function separately. The method is demonstrated on a single Li_2 molecule in free space and 32 H_2 molecules in a periodic box. This simple modification increases the efficiency of a VMC simulation by up to 72%.

preprint2000arXivOpen access

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