Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 130, Issue 3, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3058477
Keywords
perturbation theory; polarisability
Funding
- NSF [CHE-0555979]
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In the second order of perturbation theory, the dispersion component of the interaction energy of two atoms or molecules can be expressed as an integral of frequency-dependent response functions of monomers. An analogous formula is derived here for the third-order dispersion energies. The general formula involves a nonstandard response function, but for atoms in asymptotic expansion the expression involves only the standard dynamic hyperpolarizabilities.
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