TY - GEN AU - Gómez Rocha, María AU - Ruiz Arriola, Enrique PY - 2019 UR - http://hdl.handle.net/10481/59101 AB - The solution of the scattering problem based on the Lippmann-Schwinger equation requires in many cases a discretization of the spectrum in the continuum which does not respect the unitary equivalence of the S-matrix on the finite grid. We present a... LA - eng PB - Elsevier BV KW - Lippmann-Schwinger equation KW - Phase shifts KW - Momentum grid KW - Equivalent hamiltonian KW - Scattering (Physics) TI - Spectral-shift and scattering-equivalent Hamiltonians on a coarse momentum grid DO - 10.1016/j.physletb.2019.135107 ER -