Zobrazeno 1 - 10
of 18
pro vyhledávání: '"I V Barashenkov"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 10, Pp 1-24 (2024)
Abstract Two different methods are used to study the existence and stability of the (1+1)-dimensional Φ4 oscillon. The variational technique approximates it by a periodic function with a set of adiabatically changing parameters. An alternative appro
Externí odkaz:
https://doaj.org/article/89cd62a1e9fc47e1a421b2dbd0e5d386
Publikováno v:
New Journal of Physics, Vol 19, Iss 11, p 113032 (2017)
We consider a ${ \mathcal P }{ \mathcal T }$ -symmetric ladder-shaped optical array consisting of a chain of waveguides with gain coupled to a parallel chain of waveguides with loss. All waveguides have the focusing Kerr nonlinearity. The array suppo
Externí odkaz:
https://doaj.org/article/51a1253d5c0d437094717af37aa48b08
Publikováno v:
New Journal of Physics, Vol 18, Iss 7, p 075015 (2016)
The Schrödinger equation with a ${ \mathcal P }{ \mathcal T }$ -symmetric potential is used to model an optical structure consisting of an element with gain coupled to an element with loss. At low gain–loss amplitudes γ , raising the amplitude re
Externí odkaz:
https://doaj.org/article/de579f5972584bb79acc6a1181cebdfd
Publikováno v:
Physical Review
Oscillons are localised long-lived pulsating states in the three-dimensional $\phi^4$ theory. We gain insight into the spatio-temporal structure and bifurcation of the oscillons by studying time-periodic solutions in a ball of a finite radius. A sequ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e1695e5149b9218e746b38dfb0e06ad9
https://doi.org/10.1103/physrevd.107.076023
https://doi.org/10.1103/physrevd.107.076023
Publikováno v:
Journal of Physics A: Mathematical and Theoretical. 56:165701
We consider -symmetric ring-like arrays of optical waveguides with purely nonlinear gain and loss. Regardless of the value of the gain–loss coefficient, these systems are protected from spontaneous -symmetry breaking. If the nonhermitian part of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d74366663f9f827f1188668728633c92
https://doi.org/10.1088/1751-8121/acc3ce
https://doi.org/10.1088/1751-8121/acc3ce
Autor:
I. V. Barashenkov, E. V. Zemlyanaya
Publikováno v:
Computer Physics Communications. 126:22-27
We study stability of optical gap solitons, close relatives of spinor solitons of nonlinear classical field theory. The analysis of the associated linearized eigenvalue problem demonstrates the existence of a cascade of oscillatory and translational
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2fe10bb94eec364a7da3f8474891be3
https://doi.org/10.1016/s0010-4655(99)00241-6
https://doi.org/10.1016/s0010-4655(99)00241-6
Publikováno v:
Journal of Mathematical Physics. 34:3039-3053
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3ec8e022c4b7a5956f1643055a64ac7
https://doi.org/10.1063/1.530403
https://doi.org/10.1063/1.530403
Autor:
I V, Barashenkov, O F, Oxtoby
Publikováno v:
Physical review. E, Statistical, nonlinear, and soft matter physics. 80(2 Pt 2)
We present a uniform asymptotic expansion of the wobbling kink to any order in the amplitude of the wobbling mode. The long-range behavior of the radiation is described by matching the asymptotic expansions in the far field and near the core of the k
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::8bdbc1fd75c281f6b72584058bfc0b0e
https://pubmed.ncbi.nlm.nih.gov/19792273
https://pubmed.ncbi.nlm.nih.gov/19792273
Autor:
V. S. Shchesnovich, I. V. Barashenkov
We use the Riemann-Hilbert problem to study the interaction of the soliton with radiation in the parametrically driven, damped nonlinear Schr\"odinger equation. The analysis is reduced to the study of a finite-dimensional dynamical system for the amp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ccf90d35d9177f0ef0ea14fa11e52886
http://arxiv.org/abs/nlin/0111034
http://arxiv.org/abs/nlin/0111034
Autor:
S. D. Cross, I. V. Barashenkov
Publikováno v:
Fundamental and Applied Aspects of Modern Physics.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::831a1925c8c2bf21d6e68cf7315aabce
https://doi.org/10.1142/9789812810175_0043
https://doi.org/10.1142/9789812810175_0043