Role of three-body interactions in trimer bindinga)
نویسندگان
چکیده
A semiclassical perturbation expansion is developed for the ground state energy of three identical particles interacting via pair and three-body potentials. The result is applied for the ground state energy of three neon atoms, where the non-pair-additive terms make a small contribution, and for three beryllium atoms where such terms make a large contribution. Models are constructed for the pair and three-body potentials of beryllium, using the results of self-consistent field and dispersion energy calculations. The beryllium dimer and trimer are self-bound.
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تاریخ انتشار 2002