7 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…
Theory of biexciton-polaritons in transition metal dichalcogenide monolayers
Andrey Kudlis, Ivan A. Aleksandrov, Mikhail M. Glazov +1
We theoretically investigate a nonlinear optical response of a planar microcavity with an embedded transition metal dicalcogenide monolayer when the energy of a biexcitonic transit…
Schwinger particle production: Rapid switch off of the external field versus dynamical assistance
I. A. Aleksandrov, D. G. Sevostyanov, V. M. Shabaev
We consider the process of electron-positron pair production in the presence of strong electric backgrounds being rapidly switched on and off and examine the total particle yield.…
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…