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We perform a numerical study of the initial-boundary value problem, with vanishing boundary conditions, of a driven nonlinear Schr\"odinger equation (NLS) with linear damping and a Gaussian driver. We identify Peregrine-like rogue…

斑图形成与孤子 · 物理学 2019-10-17 G. Fotopoulos , D. J. Frantzeskakis , N. I. Karachalios , P. G. Kevrekidis , V. Koukouloyannis , K. Vetas

We show by direct numerical simulations that spatiotemporally localized wave forms, strongly reminiscent of the Peregrine rogue wave, can be excited by vanishing initial conditions for the periodically driven nonlinear Schr\"odinger…

斑图形成与孤子 · 物理学 2019-05-22 Nikos I. Karachalios , Paris Kyriazopoulos , Konstantinos Vetas

The spatiotemporal complexity induced by perturbed initial excitations through the development of modulational instability in nonlinear lattices with or without disorder, may lead to the formation of very high amplitude, localized transient…

无序系统与神经网络 · 物理学 2019-07-19 G. P. Tsironis , N. Lazarides , A Maluckov , Lj. Hadzievski

We consider the effect of the wind and the dissipation on the nonlinear stages of the modulational instability. By applying a suitable transformation, we map the forced/damped Nonlinear Schr\"odinger (NLS) equation into the standard NLS…

混沌动力学 · 物理学 2013-05-15 Miguel Onorato , Davide Proment

In this work, we numerically consider the initial value problem for nonlinear Schr\"odinger (NLS) type models arising in the physics of ultracold boson gases, with generic Gaussian wavepacket initial data. The corresponding Gaussian's width…

斑图形成与孤子 · 物理学 2016-09-08 E. G. Charalampidis , J. Cuevas-Maraver , D. J. Frantzeskakis , P. G. Kevrekidis

The generation of rogue waves is investigated via a nonlocal nonlinear Schrodinger (NLS) equation. In this system, modulation instability is suppressed and is usually expected that rogue wave formation would also be limited. On the…

斑图形成与孤子 · 物理学 2017-04-26 Theodoros P. Horikis , Mark J. Ablowitz

Irregular waves which experience the time-limited external forcing within the framework of the nonlinear Schrodinger (NLS) equation are studied numerically. It is shown that the adiabatically slow pumping (the time scale of forcing is much…

流体动力学 · 物理学 2017-03-17 Alexey Slunyaev , Anna Sergeeva , Efim Pelinovsky

We consider the asymptotic behavior of the solutions of a nonlinear Schr\"odinger (NLS) model incorporating linear and nonlinear gain/loss. First, we describe analytically the dynamical regimes (depending on the gain/loss strengths), for…

We measure evolution of spectra, spatial correlation functions and probability density functions (PDFs) of waves appearance for a set of one-dimensional NLS-like equations of focusing type, namely for the classical integrable Nonlinear…

光学 · 物理学 2015-03-20 Dmitry Agafontsev , Vladimir Zakharov

Being considered as a prototype for description of oceanic rogue waves (RWs), the Peregrine breather solution of the nonlinear Schr\"odinger equation (NLS) has been recently observed and intensely investigated experimentally in particular…

流体动力学 · 物理学 2015-06-16 A. Chabchoub , N. Hoffmann , H. Branger , C. Kharif , N. Akhmediev

The derivative nonlinear Schrodinger (DNLS) equation is the canonical model for dynamics of nonlinear waves in plasma physics and optics. We study exact solutions describing rogue waves on the background of periodic standing waves in the…

可精确求解与可积系统 · 物理学 2021-06-09 Jinbing Chen , Dmitry E. Pelinovsky

The rogue wave solutions (rational multi-breathers) of the nonlinear Schrodinger equation (NLS) are tested in numerical simulations of weakly nonlinear and fully nonlinear hydrodynamic equations. Only the lowest order solutions from 1 to 5…

流体动力学 · 物理学 2017-03-30 A. Slunyaev , E. Pelinovsky , A. Sergeeva , A. Chabchoub , N. Hoffmann , M. Onorato , N. Akhmediev

Breather solutions of the nonlinear Schr\"odinger equation (NLSE) are known to be considered as backbone models for extreme events in the ocean as well as in Kerr media. These exact determinisitic rogue wave (RW) prototypes on a regular…

流体动力学 · 物理学 2016-10-05 A. Chabchoub

We prove spatiotemporal algebraically decaying estimates for the density of the solutions of the linearly damped nonlinear Schr\"odinger equation with localized driving, when supplemented with vanishing boundary conditions. Their derivation…

数学物理 · 物理学 2019-12-10 G. Fotopoulos , N. I. Karachalios , V. Koukouloyannis , K. Vetas

We perform statistical analysis on discrete nonlinear waves generated though modulational instability in the context of the Salerno model that interpolates between the intergable Ablowitz-Ladik (AL) equation and the nonintegrable discrete…

斑图形成与孤子 · 物理学 2009-11-13 A. Maluckov , Lj. Hadzievski , N. Lazarides , G. P. Tsironis

In this paper, we present a probabilistic study of rare phenomena of the cubic nonlinear Schr\"odinger equation on the torus in a weakly nonlinear setting. This equation has been used as a model to numerically study the formation of rogue…

偏微分方程分析 · 数学 2021-11-16 Miguel Angel Garrido , Ricardo Grande , Kristin M. Kurianski , Gigliola Staffilani

We study the (1+1) focussing nonlinear Schr\"{o}dinger equation for an initial condition with compactly-supported parabolic profile and phase depending quadratically on the spatial coordinate. In the absence of dispersion, using the natural…

数学物理 · 物理学 2023-07-07 F. Demontis , G. Ortenzi , G. Roberti , M. Sommacal

The formation of extreme localizations in nonlinear dispersive media can be explained and described within the framework of nonlinear evolution equations, such as the nonlinear Schr\"odinger equation (NLS). Within the class of exact NLS…

流体动力学 · 物理学 2014-04-01 Amin Chabchoub , Mathias Fink

We advance a statistical theory of extreme event emergence in random nonlinear wave systems with self-similar intermediate asymptotics. We show, within the framework of a generic (1 + 1)D nonlinear Schrodinger equation with linear gain,…

光学 · 物理学 2019-12-11 Chunhao Liang , Sergey A. Ponomarenko , Fei Wang , Yangjian Cai

Rogue waves (RWs) are unexpectedly strong excitations emerging from an otherwise tranquil background. The nonlinear Schr\"odinger equation (NLSE), a ubiquitous model with wide applications to fluid mechanics, optics and plasmas, exhibits…

斑图形成与孤子 · 物理学 2016-01-07 H. N. Chan , B. A. Malomed , K. W. Chow , E. Ding
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