Accurate coefficient of the Axilrod–Teller triple-dipole term for three hydrogen atoms

Using the very accurate first order perturbation wave function reported recently for the van der Waals interaction between two ground‐state hydrogen atoms, we derive an accurate coefficient of the Axilrod–Teller triple‐dipole term for three ground‐state hydrogen atoms, which is an important leading term of the nonadditive three‐body long‐range force