Персона: Федотов, Александр Михайлович
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Институт лазерных и плазменных технологий
Стратегическая цель Института ЛаПлаз – стать ведущей научной школой и ядром развития инноваций по лазерным, плазменным, радиационным и ускорительным технологиям, с уникальными образовательными программами, востребованными на российском и мировом рынке образовательных услуг.
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- ПубликацияТолько метаданныеProspect of Studying Nonperturbative QED with Beam-Beam Collisions(2019) Yakimenko, V.; Meuren, S.; Del, Gaudio, F.; Baumann, C.; Fedotov, A.; Федотов, Александр Михайлович© 2019 American Physical Society. We demonstrate the experimental feasibility of probing the fully nonperturbative regime of quantum electrodynamics with a 100 GeV-class particle collider. By using tightly compressed and focused electron beams, beamstrahlung radiation losses can be mitigated, allowing the particles to experience extreme electromagnetic fields. Three-dimensional particle-in-cell simulations confirm the viability of this approach. The experimental forefront envisaged has the potential to establish a novel research field and to stimulate the development of a new theoretical methodology for this yet unexplored regime of strong-field quantum electrodynamics.
- ПубликацияТолько метаданныеQualitative Analysis of Quantum-Electrodynamic Processes in a Strong Field(2019) Fedotov, A. M.; Mironov, A. A.; Федотов, Александр Михайлович© 2019, Springer Science+Business Media, LLC, part of Springer Nature.We propose a simple method for estimation of the probabilities of elementary processes of quantum electrodynamics in a strong field. It is shown that quantum-electrodynamic processes run in the quasiclassical or quantum regime depending on the ratio of the characteristic scales of the time of particle acceleration by the field (a quasiclassical effect) and energy absorption by charged particles from the field directly during the process (a purely quantum effect). Using simple kinematic considerations and the uncertainty principle for these regimes, it is possible to reproduce the probabilities of the known processes in a strong field, in particular, spontaneous pair creation, photon emission by an electron, pair photoproduction, and radiation mass correction.
- ПубликацияОткрытый доступClosed system of equations for description of the e(+) e(-) gamma plasma generated from vacuum by strong electric field(2019) Smolyansky, S. A.; Fedotov, A. M.; Panferov, A. D.; Pirogov, S. O.; Федотов, Александр МихайловичWe develop a self-consistent kinetic description of a e(+)e(-)gamma plasma, generated from vacuum in a focal spot of counterpropagating laser pulses. Our model assumes purely time-dependent external (laser) field, but properly takes into account the semiclassical internal (plasma) field, as well as quantum radiation. While nonperturbative kinetic description of e(+)e(-) pair production from vacuum and the simplest variant of backreaction problem have been previously addressed, quantum radiation is included in such a model for the first time. To achieve this goal we derived coupled kinetic equations for the electron, positron, and photon plasma species and the Maxwell equation for the internal electric field. Photon subsystem is included systematically using the BBGKY chain, which we truncate at the second order of perturbation theory by taking into account the annihilation and radiation channels. An important application of our results would be consideration of laser field depletion due to cascade production beyond the locally constant field approximation.