Low-energy scattering by spherically symmetric potentials is studied in the light of the shifted large-dimension expansion technique. The present approach yields fairly accurate results for the scattering lengths and reasonable ones for the phase shifts for a class of potentials which can support up to one bound state. Remarks are made stressing the advantages of using the shifted large-N technique as compared to the unshifted formalism.

• Received 10 May 1985

DOI:https://doi.org/10.1103/PhysRevD.32.3312