Efimov effect and the third cluster coefficient of binary mixtures |
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Authors: | W. Hoogeveen J.A. Tjon |
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Affiliation: | Institute for Theoretical Physics, Princetonplein 5, P.O. Box 80006, 3508 TA Utrecht, The Netherlands |
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Abstract: | Because of the Efimov effect the three-body bound state contribution to the cluster coefficients diverges, if the pair interaction develops a zero energy two-body bound state. It is shown for a quantum Lorentz gas model and a Born-Oppenheimer model of a gas mixture that this divergence is cancelled by the continuum contribution. The behaviour of the third cluster coefficient of the Lorentz gas at extreme temperatures is discussed. |
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