A Quantum Monte Carlo Study of the Exchange-Correlation Hole in Silicon Atom and System-Averaged Correlation Holes of Second Row Atoms

  • Antonio C. Cancio
  • C. Y. Fong
  • J. S. Nelson


The variational Monte Carlo method using the correlated estimates technique and the correlated (Slater-Jastrow) wave function to study the exchange-correlation hole, nxcin open shell atoms are discussed in detail. The spin decomposed nxc for the silicon atom and the system-averaged correlation holes for the second row atoms are presented. We find important nonlocal contributions to the opposite spin nxc. The system-averaged correlation holes show approximate scaling behavior with respect to the number of electron pairs and a correlation radius.


Wave Function Slater Determinant Opposite Spin Trial Wave Function Variational Monte Carlo 
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Copyright information

© Springer Science+Business Media New York 1999

Authors and Affiliations

  • Antonio C. Cancio
    • 1
  • C. Y. Fong
    • 1
  • J. S. Nelson
    • 2
  1. 1.Department of PhysicsUniversity of California DavisUSA
  2. 2.Semiconductor Physics DivisionSandia National Laboratories AlbuquerqueUSA

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