Universality of three-body systems in 2D: parametrization of the bound states energies
arXiv:1411.2927 · doi:10.1007/s00601-014-0845-z
Abstract
Universal properties of mass-imbalanced three-body systems in 2D are studied using zero-range interactions in momentum space. The dependence of the three-particle binding energy on the parameters (masses and two-body energies) is highly non-trivial even in the simplest case of two identical particles and a distinct one. This dependence is parametrized for ground and excited states in terms of {\itshape supercircles} functions in the most general case of three distinguishable particles.
3 pages, 1 figure, published version