van der Waals interaction of the hydrogen molecule: An exact implicit energy density functional

  title={van der Waals interaction of the hydrogen molecule: An exact implicit energy density functional},
  author={Tuck C. Choy},
  journal={Physical Review A},
  • T. C. Choy
  • Published 22 November 1999
  • Physics
  • Physical Review A
We verify that the van der Waals interaction and hence all dispersion interactions for the hydrogen molecule are exactly soluble. The constants $A=6.4990267\dots{},$ $B=124.3990835\dots{},$ and $C=1135.2140398\dots{}$ (in Hartree units), first obtained approximately by Pauling and Beach using a linear variational method, can be shown to be obtainable to any desired accuracy via our exact solution. In addition, we shall show that an implicit energy density functional can be obtained, whose… 

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