Long-range effects in asymptotic fields and angular momentum of classical field electrodynamics

Asymptotic properties of classical field electrodynamics are considered. Special attention is paid to the long-range structure of the electromagnetic field. It is shown that conserved Poincare quantities may be expressed in terms of the asymptotic fields. Long-range variables are shown to be responsible for an angular momentum contribution which mixes Coulomb and infrared free field characteristics; otherwise angular momentum and energy-momentum separate into electromagnetic and matter fields contributions.
Comment: 44 pages; this is an old article (1995) which may be of interest in connection with more recent works (in particular, arXiv:2403.09234)