QED in strong fields
arXiv:hep-ph/9511372 · doi:10.1016/0168-583X(96)00276-5
Abstract
We discuss the status of atomic physics in strong field. We focus on the problem of electron-positron lines observed in heavy-ion collisions and on QED effects, calculated in strong Coulomb fields, especially Delbrück-scattering. We discuss the similarities and differences between these effects and channeling respectively beamstrahlung. We investigated the prospects for photon-channeling, calculated channeling from first principles on the basis of the Dirac equation, and determined the rate for electron-positron pair production in the collision of two high-energy particle pulses.
12 pages, LaTeX, uses elsart.sty, 11 eps pictures included. Invited talk at the workshop on `Channeling and Other Coherent Crystal Effects at Relativistic Energies', Aarhus, Denmark, July 10-14, 1995. Postscript text available at ftp://ftp.th.physik.uni-frankfurt.de/pub/schaefer/aar3.ps.Z