Abstract

I review the different methods used in calculating the effective interaction given by the energy-dependent Bloch–Horowitz (BH) equation. These methods are grouped into non-perturbative schemes, such as the Lanczos-based calculations and Faddeev-like calculations, and perturbative schemes. I show leading order BH calculations for p-shell nuclei and address convergence issues of this formalism. I comment on the need for some form of confining mean-field interaction within the BH formalism.

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