Электронный каталог

Книга (аналит. описание)

Hnatic, M.
Renormalization Group Study of Two-Species Reaction-Diffusion System: Influence of Random Velocity Fluctuations / M.Hnatic, [a.o.] // 16th Chaotic Modeling and Simulation International Conference : Conference proceedings [Electronic resource] / Ed.: C.H.Skiadas, Y.Dimotikalis. – Cham : Springer, 2024. – P. 191-201. – URL: https://doi.org/10.1007/978-3-031-60907-7_15. – Bibliogr.: 29.

Magnetohydrodynamic (MHD) turbulence driven by the stochastic Navier-Stokes equation has always been a subject of intense research activity. In an electrically conducting media developed turbulence has a number of specific properties associated with magnetic field fluctuations which under certain conditions can increase and lead to the formation of a non-zero average large-scale magnetic field. This effect is known as a turbulent dynamo and is associated with the conservation of magnetic helicity. It is especially pronounced in systems with violated parity. Our research uses field-theoretic methods to propose a general scenario for the generation of arising homogeneous magnetic fields due to the mechanism of dynamical symmetry breaking. We perform high-order calculations of self-energy Feynman diagrams responsible for the generation of a homogeneous magnetic field and its renormalization. In order to refine earlier results for the value of spontaneous magnetic field and deformation of Alfvén waves [ 1], we perform non-trivial two-loop calculations. The investigation herewith focuses on studying the system’s stability, which is necessary for the self-consistency of previously made predictions about the mechanism of system stabilization. – (Springer Proceedings in Complexity) .



ОИЯИ = ОИЯИ (JINR)2024
Спец.(статьи,препринты) = С 324.3 - Аксиоматическая теория поля. Аналитические свойства матричных элементов и дисперсионные соотношения. Разложение операторов вблизи светового конуса. Вопросы регуляризации и перенормировки. Размерная регуляризация$