Prof.
Ralf Schuetzhold
(Faculty of Physics, University of Duisburg-Essen)
10/07/2013, 11:00
oral presentation
Recently it has been found that the superposition of a strong
and slow electric field with a weaker and faster electromagnetic
pulse can significantly enhance the probability for
non-perturbative electron-positron pair creation out of the
vacuum — the dynamically assisted Sauter-Schwinger effect.
After a brief introduction into the basics of this effect,
this talk will be devoted...
Dr
Sven Ahrens
(Max-Planck-Institut für Kernphysik)
10/07/2013, 11:25
oral presentation
The Kapitza-Dirac effect is the diffraction of electrons at a standing wave of light [1]. We solve the relativistic quantum dynamics of this electron diffraction by integrating the Dirac equation numerically and perturbatively in momentum space and demonstrate that spin-flips can be observed in the Kapitza-Dirac effect with three interacting photons [2]. Our recent work shows that significant...
Takuya Shibata
(Research Center for Nuclear Physics, Osaka University)
10/07/2013, 11:50
oral presentation
We propose a uniform formulation to calculate photon emission processes from a charged scalar field or spinor field under the strong laser field. One photon emission from a charged particle, which is forbidden in the vacuum, can be observed in the strong EM field, for example, SLAC E-144 experiment (1997). The process is expressed as non-linear Compton scattering, which means the number of...
Mr
Christian Kohlfürst
(University of Graz)
10/07/2013, 12:10
oral presentation
The process of electron-positron pair production in rapidly time-dependent and linearly polarized electric fields is investigated within the quantum kinetic formalism. Similarities between atomic ionization and pair production are pointed out for field parameters where the Schwinger effect (tunneling) is contributing but subdominant against multi-photon absorption (above-threshold ionization)....
