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of 76
pro vyhledávání: '"Milovanov, Alexander V."'
This paper is concerned with the processes of spatial propagation and penetration of turbulence from the regions where it is locally excited into initially laminar regions. The phenomenon has come to be known as "turbulence spreading" and witnessed a
Externí odkaz:
http://arxiv.org/abs/2312.13296
We devise an analytical method to deal with a class of nonlinear Schr\"odinger lattices with random potential and subquadratic power nonlinearity. An iteration algorithm is proposed based on multinomial theorem, using Diophantine equations and a mapp
Externí odkaz:
http://arxiv.org/abs/2301.10322
Publikováno v:
Phys. Rev. E 103, 052218 (2021)
A new basis has been found for the theory of self-organization of transport avalanches and jet zonal flows in L-mode tokamak plasma, the so-called "plasma staircase." The jet zonal flows are considered as a wave packet of coupled nonlinear oscillator
Externí odkaz:
http://arxiv.org/abs/2104.11582
We report a new result concerning the dynamics of an initially localized wave packet in quantum nonlinear Schr\"odinger lattices with a disordered potential. A class of nonlinear lattices with subquadratic power nonlinearity is considered. We show th
Externí odkaz:
http://arxiv.org/abs/1905.05467
Publikováno v:
Phys. Rev. E 98, 022208 (2018)
We formulate the problem of confined L\'evy flight on a comb. The comb represents a sawtooth-like potential field $V(x)$, with the asymmetric teeth favoring net transport in a preferred direction. The shape effect is modeled as a power-law dependence
Externí odkaz:
http://arxiv.org/abs/1807.07116
Publikováno v:
Phys. Rev. E 95, 042142 (2017)
The four-wave interaction in quantum nonlinear Schr\"odinger lattices with disorder is shown to destroy the Anderson localization of waves, giving rise to unlimited spreading of the nonlinear field to large distances. Moreover, the process is not thr
Externí odkaz:
http://arxiv.org/abs/1703.05600
Akademický článek
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Publikováno v:
In Chaos, Solitons and Fractals: the interdisciplinary journal of Nonlinear Science, and Nonequilibrium and Complex Phenomena March 2021 144
Autor:
Carlevaro, Nakia, Milovanov, Alexander V., Falessi, Matteo V., Montani, Giovanni, Terzani, Davide, Zonca, Fulvio
Publikováno v:
Entropy 18(4), 143 (2016)
We revisit the applications of quasi-linear theory as a paradigmatic model for weak plasma turbulence and the associated bump-on-tail problem. The work, presented here, is built around the idea that large-amplitude or strongly shaped beams do not rel
Externí odkaz:
http://arxiv.org/abs/1512.07045
We study the phenomena of Anderson localization in the presence of nonlinear interaction on a lattice. A class of nonlinear Schrodinger models with arbitrary power nonlinearity is analyzed. We conceive the various regimes of behavior, depending on th
Externí odkaz:
http://arxiv.org/abs/1406.0665