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MPINP:
Research group K. Z. Hatsagortsyan – Division C. H. Keitel
Abstract:
Pair production of electron-positron pairs in ultra-intense laser fields
is considered in this work. Two regimes are investigated separately.
The first regime is the so-called tunnel regime of pair production. The
existing tunneling picture which is applicable in this regime will be enhanced
by the effects of a magnetic field and an additional, perturbatively
treated photon. Both effects are incorporated by the semi-classical
approximation. In contrast, no straightforward approach exists so far for
the second regime of pair production. Therefore, numerical calculations
will be carried out by applying the framework of the in/out-formalism
in external fields. These simulations show non-trivial effects that are be
expected in this regime. Specifically, the influence of the electromagnetic
fields’ polarization upon the produced pair spectra is investigated.
Furthermore, multi-pair states will be studied.
