Three-body nonadditive forces between spin-polarized alkali-metal atoms

@article{Soldn2003ThreebodyNF,
  title={Three-body nonadditive forces between spin-polarized alkali-metal atoms},
  author={Pavel Sold{\'a}n and Marko T. Cvitas and Jeremy M. Hutson},
  journal={Physical Review A},
  year={2003},
  volume={67},
  pages={054702}
}
Three-body nonadditive forces in systems of three spin-polarized alkali-metal atoms (Li, Na, K, Rb, and Cs) are investigated using high-level ab initio calculations. The nonadditive forces are found to be large, especially near the equilateral equilibrium geometries. For Li, they increase the three-atom potential well depth by a factor of 4 and reduce the equilibrium interatomic distance by 1.07 A. The nonadditive forces originate principally from chemical bonding arising from sp mixing effects… 
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50 Citations

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