Wavefunction correction scheme for non fixed-node diffusion Monte Carlo

Details Wavefunction correction scheme for non fixed-node diffusion Monte Carlo Wavefunction correction scheme for non fixed-node diffusion Monte Carlo

2009-12-17

arxiv.org/abs/0912.3401v2

Physics

Computational Physics

5 pages, 1 Postscript figures, uses REVTeX 4

Scientific paper

Wavefunction correction scheme, which was developed as a variance reduction tool for the pure and fixed-node diffusion Monte Carlo (DMC) computations by Anderson and Freihaut, is applied to the DMC computations of fermions without using the fixed-node constraint. This technique is found to be suitable for the non fixed-node calculations because of the significant decreases observed in the computation times for calculating results with certain statistical error values in the benchmark computations.

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