Garrett approximation revisited
arXiv:1906.05697 · doi:10.1088/1361-6404/ab61c2
Abstract
Three variants of the Garrett approximation are studied and their accuracy is analyzed, for symmetric and asymmetric square wells. Quite surprisingly, the simplest variants are also the most accurate. The applications to quantum wells, quantum dots and capillary neutron guides are briefly discussed.
15 pages, one figure