2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/82109The renormalization of EFT for nucleon-nucleon scattering in nonperturbative regimes is investigated in a compact parametrization of the $T$-matrix. The key difference between perturbative and nonperturbative renormalization is clarified. The underlying theory perspective and the 'fixing' of the prescriptions for the $T$-matrix from physical boundary conditions are stressed.8 pages, 1 figure, revised version with a new titleNuclear TheoryHigh Energy Physics - PhenomenologyHigh Energy Physics - Theorytext