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- W4233351330 abstract "The low-energy positronium–positronium (Ps–Ps) scattering parameters, s-wave scattering lengths and effective ranges for symmetric/antisymmetric channels, are evaluated on the basis of the semi-phenomenological Ps–Ps effective potentials and of the existence of the Ps molecule. The Ps–Ps scattering parameters obtained by recent more elaborate ab initio calculations are reviewed briefly, and shown to be consistent with those by effective potential approach. We also discuss the possible phases of Ps or electron–positron many-body states, and the effects of the Ps–Ps interactions for them. Especially, we estimate the interaction effects in Ps-Bose–Einstein condenstates (Ps-BEC) with the obtained Ps–Ps scattering lengths, and show that Ps-BEC is very weakly-interacting system." @default.
- W4233351330 created "2022-05-12" @default.
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- W4233351330 date "2004-07-01" @default.
- W4233351330 modified "2023-10-16" @default.
- W4233351330 title "Many positron and positronium interactions*1" @default.
- W4233351330 doi "https://doi.org/10.1016/s0168-583x(04)00382-9" @default.
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