%AAdhikari, S K
%D1992
%I; Instituto de Fisica Teorica (IFT), Sao Paulo, SP (Brazil)
%J
%K72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS, LIPPMANN-SCHWINGER EQUATION, VARIATIONAL METHODS, BOUNDARY CONDITIONS, MATRICES, NUCLEON-NUCLEON INTERACTIONS, SCATTERING, 662110, THEORY OF FIELDS AND STRINGS
%PMedium: X; Size: [15] p.
%TComplex Kohn variational principle for the solution of Lippmann-Schwinger equations
%XA recently proposed version of the Kohn variational principle for the t matrix incorporating the correct boundary condition is applied for the first time to the study of nucleon-nucleon scattering. Analytic expressions can be obtained for all the integrals in the method for a wide class of potentials and for a suitable choice of trial functions. Closed-form analytic expressions for these integrals are given for Yakawa and exponential potentials. Calculations with two commonly used S-wave nucleon-nucleon potentials show that the method may converge faster than other solution schemes not only for the phase-shifts but also for the off-shell t matrix elements if the freedom in the choice of the trial function is exploited. (author).
%0Technical Report
Brazil Other: ON: DE93609885; TRN: BR9230413003285 INIS English