Data collapse for the Schrِdinger equation

We present a data-collapse study for quantum few-body problems. Our data strongly support a recent hypothesis for the application of the finite-size scaling approach for the calculation of the critical parameters for the few-body Schrِdinger equation. We test the data collapse using very accurate calculations of the one-body Yukawa potential. This powerful tool is used to obtain an estimation of the critical exponents for the lithium-like atoms.