Results 31 to 40 of about 18,489 (341)

Amplification of Wave Groups in the Forced Nonlinear Schrödinger Equation

open access: yesFluids, 2022
In many physical contexts, notably including deep-water waves, modulation instability in one space dimension is often studied by using the nonlinear Schrödinger equation. The principal solutions of interest are solitons and breathers which are adopted as
Montri Maleewong, Roger H. J. Grimshaw
doaj   +1 more source

Breathers in the weakly coupled topological discrete sine-Gordon system [PDF]

open access: yes, 1998
Existence of breather (spatially localized, time periodic, oscillatory) solutions of the topological discrete sine-Gordon (TDSG) system, in the regime of weak coupling, is proved.
Agarwal R P   +15 more
core   +5 more sources

Asymptotic Dynamics of Breathers in Fermi-Pasta-Ulam Chains [PDF]

open access: yes, 2002
We study the asymptotic dynamics of breathers in finite Fermi-Pasta-Ulam chains at zero and non-zero temperatures. While such breathers are essentially stationary and very long-lived at zero temperature, thermal fluctuations tend to lead to breather ...
A. Bikaki   +21 more
core   +3 more sources

Interactions of Coherent Structures on the Surface of Deep Water

open access: yesFluids, 2019
We numerically investigate pairwise collisions of solitary wave structures on the surface of deep water—breathers. These breathers are spatially localised coherent groups of surface gravity waves which propagate so that their envelopes are stable ...
Dmitry Kachulin   +2 more
doaj   +1 more source

Rogue Waves With Rational Profiles in Unstable Condensate and Its Solitonic Model

open access: yesFrontiers in Physics, 2021
In this brief report we study numerically the spontaneous emergence of rogue waves in 1) modulationally unstable plane wave at its long-time statistically stationary state and 2) bound-state multi-soliton solutions representing the solitonic model of ...
D. S. Agafontsev   +3 more
doaj   +1 more source

Surface breathers in discrete magnetic metamaterials [PDF]

open access: yes, 2015
We analyze the properties of discrete breathers excited near the edge of a one-dimensional metamaterial created by a truncated array of nonlinear split-ring resonators.
Kivshar, Yuri   +2 more
core   +1 more source

Advantages and limitations of the nonlinear Schrödinger equation in describing the evolution of nonlinear water-wave groups; pp. 356–360 [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2015
The nonlinear Schrödinger (NLS) equation is a popular and relatively simple model used extensively to describe the evolution of nonlinear water-wave groups.
Lev Shemer
doaj   +1 more source

Ion Acoustic Breathers in Electron-Beam Plasma

open access: yesPlasma, 2023
The nonlinear excitations of ion acoustic (IA) structures in an electron beam embedded plasma composed of Vasyliunas–Cairns (VC) distributed hot electrons has been studied.
Manveet Kaur   +3 more
doaj   +1 more source

Bright and dark breathers in Fermi-Pasta-Ulam lattices [PDF]

open access: yes, 2004
In this paper we study the existence and linear stability of bright and dark breathers in one-dimensional FPU lattices. On the one hand, we test the range of validity of a recent breathers existence proof [G. James, {\em C. R. Acad. Sci. Paris}, 332, Ser.
Archilla, J. F. R.   +3 more
core   +2 more sources

Comparison of palatal dimension in children with obstructive and habitual mouth breathing

open access: yesJournal of Indian Society of Pedodontics and Preventive Dentistry
Background: Prolonged mouth breathing (MB) can produce muscular and postural alterations which in turn can cause changes on the morphology, position, and growth direction of the jaws.
Soni Kottayi   +5 more
doaj   +1 more source

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