Closed-shell ring coupled cluster doubles theory with range separation applied on weak intermolecular interactions.

@article{Toulouse2011ClosedshellRC,
  title={Closed-shell ring coupled cluster doubles theory with range separation applied on weak intermolecular interactions.},
  author={Julien Toulouse and Wuming Zhu and Andreas Savin and Georg Jansen and J{\'a}nos G. {\'A}ngy{\'a}n},
  journal={The Journal of chemical physics},
  year={2011},
  volume={135 8},
  pages={
          084119
        }
}
We explore different variants of the random phase approximation to the correlation energy derived from closed-shell ring-diagram approximations to coupled cluster doubles theory. We implement these variants in range-separated density-functional theory, i.e., by combining the long-range random phase approximations with short-range density-functional approximations. We perform tests on the rare-gas dimers He(2), Ne(2), and Ar(2), and on the weakly interacting molecular complexes of the S22 set of… 

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