RELATIVISTIC HARTREE-BOGOLIUBOV THEORY IN COORDINATE SPACE - FINITE-ELEMENT SOLUTION FOR A NUCLEAR SYSTEM WITH SPHERICAL-SYMMETRY

A C++ code for the solution of the relativistic Hartree-Bogoliubov the ory (RHB) in coordinate space is presented, The theory describes a nuc leus as a relativistic system of baryons and mesons. The RHB model is applied in the self-consistent mean-field approximation to the descrip tion of ground state properties of spherical nuclei. Finite range inte ractions are included to describe pairing correlations and the couplin g to particle continuum states. Finite element methods are used in the coordinate space discretization of the coupled system of Dirac-Hartre e-Bogoliubov integro-differential eigenvalue equations, and Klein-Gord on equations for the meson fields. The bisection method is used in the solution of the resulting generalized algebraic eigenvalue problem, a nd the biconjugate gradient method for the systems of linear and nonli near algebraic equations, respectively. (C) 1997 Published by Elsevier Science B.V.