Off-ShellMatrix and the Jost Function
- 1 June 1970
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review C
- Vol. 1 (6), 1910-1924
- https://doi.org/10.1103/physrevc.1.1910
Abstract
An off-shell effective-rangelike theory is developed for the low-energy two-nucleon matrix. It is shown that the parameters in the theory can be determined from on-shell scattering data. The parameters are determined from the and two-nucleon phase shifts, and the validity of the off-shell formula is tested by means of examples. For the cases considered, the formula is found to work very well. A new proof for the separability of the two-body matrix near bound-state and resonance energies is given. This proof is based on the properties of the matrix in configuration space. A theorem on the factorization of the Jost function is developed and used to solve the inversion problem for rank-two separable potentials. Results are given for phase shifts that become hard-core phase shifts at high energies and for tensor forces. These results allow one to construct a separable potential that has the same on-shell matrix and bound-state wave function as a realistic local potential.
Keywords
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