Electric polarizability of nuclei from a longitudinal sum rule
arXiv:nucl-th/9802011 · doi:10.1016/S0375-9474(98)00166-3
Abstract
The nuclear electric polarizability is theoretically analyzed using a sum rule derived from the longitudinal part of the forward Compton amplitude. Beyond the leading dipole contribution, this approach leads to the presence of potential-dependent terms that do not show up in previous analyses. The significance of these new contributions is illustrated by performing an explicit calculation for a proton-neutron system interacting via a separable potential.
9 pages, revtex. Minor changes, two references added. To appear in Nucl. Phys. A