Abstract
To construct a phase-equivalent energy-dependent local potential corresponding to a sum of local and nonlocal interactions, we use a simple method for expanding the wave function in a Taylor series up to the third order. We apply the constructed potentials to calculate the scattering phase shifts using the phase equation. The results for scattering in nucleon–nucleon, $$\alpha$$ –nucleon, and $$\alpha$$ – $$\alpha$$ systems agree reasonably well with the standard data.
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