Semi-relativistic charge-current density operator
arXiv:nucl-th/9801066 · doi:10.1016/S0375-9474(98)80005-5
Abstract
The charge-current density and two-photon operators consistent with a single-particle semi-relativistic Hamiltonian are derived within a suitable functional derivative formalism which preserves gauge invariance. An application to electron scattering is presented and results are compared with a fully relativistic case and the non-relativistic cases corrected through fourth order in M^{-1}.
20 pages, 3 postscript figures, typos corrected