The Triton from the Reid93 Potential in the UPA

The Unitary Pole Approximation (UPA) is an efficient means to construct a rank-one separable potential, reproduces the deuteron and 1S0 anti-bound-state wave functions, generates a reliable estimate of the two- and three-nucleon binding energies, and yields a simple representation of the three-nucleon ground-state wave function. The Reid93 potential provides a representation of the NN scattering data comparable in fit to a partial wave analysis, and reproduces the deuteron properties as well as any contemporary potential model. From comparing the UPA and the local potential results, we can see that the UPA gives a satisfactory approximation to the local potential, suggesting that one may use the UPA three-nucleon wave function to calculate the electric dipole moment (EDM) for the 3H and 3He considering the absence of any experimental measurement at this stage, or to investigate the variation in the two- and three-nucleon binding energy as a function of the hadronic mass.