Identifying time scales in particle production from fields
Matthias Diez (Institute of Physics, University of Graz, NAWI Graz, Universitätsplatz 5, Graz, Austria); Reinhard Alkofer (Institute of Physics, University of Graz, NAWI Graz, Universitätsplatz 5, Graz, Austria); Christian Kohlfürst (Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, Dresden, Germany)
Particle production by ultra-strong electric fields is a well-studied research field. Nevertheless, despite repeated attempts to relate the production rate within the field to the formation time of a particle, the latter is still shrouded in mystery. We provide an interpretation of a particle distribution at finite times enabling us to isolate and, therefore, identify the relevant time scales regarding particle formation in quantum physics within and beyond perturbation theory.
