Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 128, Issue 20, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2925274
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Quantum Monte Carlo and quantum chemistry techniques are used to investigate pseudopotential models of the lithium hydride (LiH) molecule. Interatomic potentials are calculated and tested by comparing with the experimental spectroscopic constants and well depth. Two recently developed pseudopotentials are tested, and the effects of introducing a Li core polarization potential are investigated. The calculations are sufficiently accurate to isolate the errors from the pseudopotentials and core polarization potential. Core-valence correlation and core relaxation are found to be important in determining the interatomic potential. (C) 2008 American Institute of Physics.
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