An efficient sampling algorithm for variational Monte Carlo. - Archive ouverte HAL
Article Dans Une Revue The Journal of Chemical Physics Année : 2006

An efficient sampling algorithm for variational Monte Carlo.

Résumé

We propose a new algorithm for sampling the N-body density mid R:Psi(R)mid R:(2)R(3N)mid R:Psimid R:(2) in the variational Monte Carlo framework. This algorithm is based upon a modified Ricci-Ciccotti discretization of the Langevin dynamics in the phase space (R,P) improved by a Metropolis-Hastings accept/reject step. We show through some representative numerical examples (lithium, fluorine, and copper atoms and phenol molecule) that this algorithm is superior to the standard sampling algorithm based on the biased random walk (importance sampling).
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Dates et versions

hal-00875620 , version 1 (28-01-2020)

Identifiants

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Anthony Scemama, Tony Lelièvre, Gabriel Stoltz, Eric Cancès, Michel Caffarel. An efficient sampling algorithm for variational Monte Carlo.. The Journal of Chemical Physics, 2006, 125 (11), pp.114105. ⟨10.1063/1.2354490⟩. ⟨hal-00875620⟩
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