Structure and reactions of exotic nuclei

Exotic nuclei far off beta-stability and asymmetric nuclear matter are investigated using nuclear many-body theory. Meson-nucleon coupling constants in asymmteric matter are derived from Dirac-Brueckner calculations. Their use in an effective density-dependent field theory is discussed. Finite nuclei close to the neutron drip line are described by non-relativistic nuclear structure methods. Ground and excited states are studied by continuum Hartree-Fock-Bogoliubov and quasiparticle random phase approximation theory. Pair interactions are found to be of major importance for the binding properties of two-neutron halo systems. The structure of single-nucleon halo nuclei is mainly determined by dynamical core polarization. Applications to recent data on the dipole response of Li-11 and longitudinal momentum distributions from the break-up of C-19 are discussed. Break-up reactions at relativistic energies are described in a distorted wave eikonal approximation.