G-Matrix Equation in the Resonating-Group Method

Details G-Matrix Equation in the Resonating-Group Method G-Matrix Equation in the Resonating-Group Method

2000-06-28

arxiv.org/abs/nucl-th/0006066v1

Prog. Theor. Phys. 104 (2000) 1025--1040

Physics

Nuclear Physics

Nuclear Theory

21 pages 0 figures, submitted to Prog. Theor. Phys

Scientific paper

10.1143/PTP.104.1025

The G-matrix equation is most straightforwardly formulated in the resonating-group method if the quark-exchange kernel is directly used as the driving term for the infinite sum of all the ladder diagrams. The inherent energy-dependence involved in the exchange term of the normalization kernel plays the essential role to define the off-shell T-matrix uniquely when the complete Pauli-forbidden state exists. We analyze this using a simple solvable model with no quark-quark interaction, and calculating the most general T-matrix in the formulation developed by Noyes and Kowalski. This formulation gives a certain condition for the existence of the solution in the Lippmann-Schwinger resonating-group method. A new procedure to deal with the corrections for the reduced masses and the internal-energy terms in the Lambda N - Sigma N coupled-channel resonating-group equation is proposed.

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