Abstract.
Few-body systems with large scattering length have universal properties that do not depend on the details of their interactions at short distances. We study the universal bound-state properties of the four-boson system with large scattering length in an effective quantum mechanics approach. We compute the four-body binding energies using the Yakubovsky equations for positive and negative scattering length. Moreover, we study the correlation between three- and four-body energies and present a generalized Efimov plot for the four-body system. These results are useful for understanding the cluster structure of nuclei and for the creation of weakly bound tetramers with cold atoms close to a Feshbach resonance.
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Hammer, H.W., Platter, L. Universal properties of the four-body system with large scattering length. Eur. Phys. J. A 32, 113–120 (2007). https://doi.org/10.1140/epja/i2006-10301-8
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DOI: https://doi.org/10.1140/epja/i2006-10301-8