The eigenvalue problem of the resonating-group norm operator is solved by reducing it to that of a generator-coordinate overlap matrix. This method makes it easy to include several configurations for the constituents. Calculations for the ground-state α+d system show that the effect of the mixing is moderate. When α or d is excited, the solutions deviate from the usual pattern. This has a quantitatively significant effect only when d is excited.

• Received 19 January 1988

DOI:https://doi.org/10.1103/PhysRevC.37.2906