5 papers
Vacuum photon emission and mean electromagnetic field in pair-creating external backgrounds
I. A. Aleksandrov, E. V. Perelygin, D. V. Chubukov
We develop a perturbative description of vacuum radiative processes in quantum electrodynamics with a prescribed external electromagnetic background capable of producing electron-p…
Vacuum polarization and pair production in time-dependent electric fields: A quantum-kinetic-equation approach
I. A. Aleksandrov, V. A. Bokhan, A. I. Baksheev +1
The evolution of the vacuum state in a time-dependent external electric field of arbitrary polarization is investigated within a nonperturbative framework of quantum kinetic equati…
Evolution of a twisted electron wave packet perturbed by an inhomogeneous electric field
A. Kudlis, I. A. Aleksandrov, N. N. Rosanov
Laguerre-Gaussian (LG) wave packets, known for their vortex structure and nonzero orbital angular momentum (OAM), are of great interest in various scientific fields. Here we study…
Semiclassical kinetic equations for composite bosons
A. Kudlis, I. A. Aleksandrov, Y. S. Krivosenko +1
We derive semiclassical Boltzmann equations describing thermalization of an ensemble of excitons due to exciton-phonon interactions taking into account the fact that excitons are n…
Total yield of electron-positron pairs produced from vacuum in strong electromagnetic fields: validity of the locally constant field approximation
D. G. Sevostyanov, I. A. Aleksandrov, G. Plunien +1
The widely-used locally constant field approximation (LCFA) can be utilized in order to derive a simple closed-form expression for the total number of particles produced in the pre…