Axilrod–Teller potential

The Axilrod–Teller potential (also known as the Axilrod-Teller-Muto or ATM potential) in molecular physics, is a three-body potential that results from a third-order perturbation correction to the attractive London dispersion interactions (instantaneous induced dipole-induced dipole) where

is the distance between atoms

is the angle between the vectors

is positive and of the order

is the ionization energy and

is the mean atomic polarizability; the exact value of

depends on the magnitudes of the dipole matrix elements and on the energies of the

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