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- W1549345858 abstract "The diffusion Monte Carlo method for the solution of the Schrödinger equation for atomic and molecular systems is extended to incorporate the antisymmetry constraint. The sign problem is treated constraining the diffusion process of signed walkers within the fluctuating nodes of a function A, defined as sum of Gaussians centered on the psips. The function A is able to build up the full nodal surface in the 3N dimensional space. The algorithm is shown to scale as Nα3+Nβ3 where Nα and Nβ are the number of α and β electrons. Results are given for the b 3Σu+ and c 3Πu states of H2 and the 1 3S state of He." @default.
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- W1549345858 date "1993-05-01" @default.
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- W1549345858 title "Antisymmetry in the quantum Monte Carlo method with the <i>A</i>‐function technique: H<sub>2</sub> <i>b</i> <sup>3</sup>Σ<sub><i>u</i></sub><sup>+</sup>, H<sub>2</sub> <i>c</i> <sup>3</sup>Π<sub><i>u</i></sub>, He 1 <sup>3</sup><i>S</i>" @default.
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- W1549345858 doi "https://doi.org/10.1063/1.464712" @default.
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