Few-body systems with large scattering length have universal properties thatdo not depend on the details of their interactions at short distances. We studythe universal bound state properties of the four-boson system with largescattering length in an effective quantum mechanics approach. We compute thefour-body binding energies using the Yakubovsky equations for positive andnegative scattering length. Moreover, we study the correlation between three-and four-body energies and present a generalized Efimov plot for the four-bodysystem. These results are useful for understanding the cluster structure ofnuclei and for the creation of weakly-bound tetramers with cold atoms close toa Feshbach resonance.
展开▼
