Lepton wave packets produced by strong short-range potentials

Further theoretical studies are reported of the effect of strong short-range potentials on leptons and the lepton vacuum state. In previous work, bound state and vacuum polarisations were computed for static potential strengths V approximately Vsub(c), where Vsub(c) is the critical value at which electron (or muon) levels are transferred from upper to lower continuum. The computations are here extended to time dependent effects - in particular, the redistribution of probability and level occupancy between upper and lower continuum when the potential is switched from V = O to modulus V >= modulus Vsub(c) or vice versa. Some examples of relativistic wave packets created by such potential changes are also given, and their physical interpretation is discussed. (author)