Efficient implementation of the Hellmann-Feynman theorem in a diffusion Monte Carlo calculation.

S A Vitiello1

  • 1Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas-UNICAMP 13083-859, Campinas, SP, Brazil. vitiello@ifi.unicamp.br

Summary

This study computes energies for helium-4 atoms in solid and liquid phases using diffusion Monte Carlo. The advanced multiweight method efficiently applies the Hellmann-Feynman theorem for accurate results.

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