https://elib.bsu.by:443/handle/123456789/185753 Mon, 20 Apr 2026 12:43:47 GMT 2026-04-20T12:43:47Z https://elib.bsu.by:443/handle/123456789/345127 Заглавие документа: Justification of the single-mode approximation for a finite-duration laser pulse interacting with an electron Авторы: Skoromnik, O. D.; Feranchuk, I. D. Аннотация: The interaction Hamiltonian of an electron and a quasi-monochromatic pulse of a strong quantized electromagnetic field is examined. Canonical transformations of the field variables are found that allow the division of the system’s Hamiltonian in two parts. The first one describes the interaction between an electron and a single collective mode of the field. The properties of this mode are defined by the superposition of the modes corresponding to the pulse wave packet. The second part describes the field fluctuations relatively to the collective mode. The field intensity, pulse duration and transversal spread are estimated for which a single-mode approximation can be used for the system’s description. Thu, 10 Apr 2014 00:00:00 GMT https://elib.bsu.by:443/handle/123456789/345127 2014-04-10T00:00:00Z https://elib.bsu.by:443/handle/123456789/342288 Заглавие документа: A Uniformly Suitable Approximation for the Characteristics of the Electromagnetic Field in the Rabi Quantum Model Авторы: Leonau, A.U.; Feranchuk, I.D.; Skoromnik, O.D.; San, N.Q. Аннотация: A systematic study is made of the efficiency of a uniformly suitable approximation for describing the Rabi quantum model beyond the rotating wave model. The correlation characteristics of the electromagnetic field in a resonator are calculated and the physical effects owing to the counter-rotating terms in the Hamiltonian are examined. Wed, 01 Jan 2020 00:00:00 GMT https://elib.bsu.by:443/handle/123456789/342288 2020-01-01T00:00:00Z https://elib.bsu.by:443/handle/123456789/340721 Заглавие документа: Квантовые эффекты в процессах взаимодействия электрона с полем лазерной волны Авторы: Скоромник, О.Д.; Феранчук, И.Д. Аннотация: В работе представлен анализ влияния квантованного характера поля на электромагнитные процессы в поле сильной лазерной волны. Thu, 01 Jan 2015 00:00:00 GMT https://elib.bsu.by:443/handle/123456789/340721 2015-01-01T00:00:00Z https://elib.bsu.by:443/handle/123456789/339355 Заглавие документа: 𝑈⁡(1) gauged nontopological solitons in the 3+1 dimensional 𝑂⁡(3) sigma-model Авторы: Ferreira, L.A.; Mikhaliuk, A.; Shnir, Y. Аннотация: We present and study new nontopological soliton solutions in the 𝑈⁡(1) gauged nonlinear 𝑂⁡(3) sigma-model with a symmetry breaking potential in 3+1 dimensional flat space-time. The configurations are endowed with an electric and magnetic field and also carry a nonvanishing angular momentum density. We discuss properties of these solitons and investigate the domains of their existence Wed, 01 Jan 2025 00:00:00 GMT https://elib.bsu.by:443/handle/123456789/339355 2025-01-01T00:00:00Z