Comparison of triton bound-state properties using different separable representations of realistic nucleon-nucleon potentials

The quality of two different separable expansion methods (W-matrix and Erns t-Shakin-Thaler) is investigated. We compare, the triton binding energies a nd components of the triton wave functions obtained in this way with the re sults of a direct two-dimensional treatment. The Paris, Bonn A and Bonn B p otentials are employed as underlying two-body interactions, their total ang ular momenta being incorporated up to j less than or equal to 2. It is foun d that the most accurate results based on the Ernst-Shakin-Thaler method ag ree within 1.5% or better with the two-dimensional calculations, whereas th e results for the W-matrix representation are less accurate.