Diffusion quantum Monte Carlo study of three-dimensional Wigner crystals

  title={Diffusion quantum Monte Carlo study of three-dimensional Wigner crystals},
  author={N. Drummond and Z. Radnai and J. Trail and M. Towler and R. Needs},
  journal={Physical Review B},
  • N. Drummond, Z. Radnai, +2 authors R. Needs
  • Published 2004
  • Physics
  • Physical Review B
  • We report diffusion quantum Monte Carlo calculations of three-dimensional Wigner crystals in the density range rs=100–150. We have tested different types of orbital for use in the approximate wave functions but none improve upon the simple Gaussian form. The Gaussian exponents are optimized by directly minimizing the diffusion quantum Monte Carlo energy. We have carefully investigated and sought to minimize the potential biases in our Monte Carlo results. We conclude that the uniform electron… CONTINUE READING
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