Lightlike inhomogenities in worldline pair creation
Wednesday January 28, 2015 17:15:00 CET
Wednesday January 28, 2015 18:15:00 CET
Dr. Anton Ilderton, Chalmers University Göteborg
The locally constant field approximation (LFCA) is commonly used to calculate the nonperturbative pair production probability in electromagnetic fields.
In certain classes of fields, for example longitudinal electric fields depending on lightfront time, the LCFA is known to be exact. Using the worldline description of the effective action, we show that the reason for this is closely tied to the zero-mode problem of lightfront quantisation, and the so-called “triviality” of the lightfront vacuum.
Seminarraum HI Jena, Fröbelstieg 3