Scaling predictions for radii of weakly bound triatomic molecules

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2003-01-01

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The mean-square radii of the molecules [Formula Presented] [Formula Presented] [Formula Presented] and [Formula Presented] are calculated using a three-body model with contact interactions. They are obtained from a universal scaling function calculated within a renormalized scheme for three particles interacting through pairwise Dirac-[Formula Presented] interaction. The root-mean-square distance between two atoms of mass [Formula Presented] in a triatomic molecule are estimated to be of the order of [Formula Presented] where [Formula Presented] is the dimer and [Formula Presented] is the trimer binding energies, and [Formula Presented] is a constant (varying from [Formula Presented] to [Formula Presented] which depends on the ratio between [Formula Presented] and [Formula Presented] Considering previous estimates for the trimer energies, we also predict the sizes of rubidium and sodium trimers in atomic traps. © 2003 The American Physical Society.

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Physical Review A - Atomic, Molecular, and Optical Physics, v. 68, n. 1, p. 7-, 2003.

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