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Author: B. M. Herbst
Publisher: Longman Sc & Tech
ISBN: 9780582014817
Category : Schrödinger equation
Languages : en
Pages : 208
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Book Description
Author: B. M. Herbst
Publisher: Longman Sc & Tech
ISBN: 9780582014817
Category : Schrödinger equation
Languages : en
Pages : 208
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Panayotis G. Kevrekidis
Publisher: Springer Science & Business Media
ISBN: 3540891994
Category : Science
Languages : en
Pages : 417
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Book Description
This book constitutes the first effort to summarize a large volume of results obtained over the past 20 years in the context of the Discrete Nonlinear Schrödinger equation and the physical settings that it describes.
Author: Suk-Chong Tsang
Publisher: Open Dissertation Press
ISBN: 9781361192689
Category :
Languages : en
Pages :
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Book Description
This dissertation, "A Numerical Study of Coupled Nonlinear Schrodinger Equations Arising in Hydrodynamics and Optics" by Suk-chong, Tsang, 曾淑莊, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract of the thesis entitled A NUMERICAL STUDY OF COUPLED NONLINEAR SCHRODINGER EQUATIONS ARISING IN HYDRODYNAMICS AND OPTICS submitted by Suk-Chong TSANG for the degree of Master of Philosophy at the University of Hong Kong in June 2003 This thesis reports the findings of numerical studies of coupled nonlinear Schrodinger equations (CNLS) in both hydrodynamics and optics applications, and its focus was a model for interaction between wavepackets in the framework of CNLS. Generally, group velocity dispersion, self-phase modulation and cross-phase modulation terms are present in these equations. However, intermodal dispersion and linear coupling terms may also exist when CNLS are applied in optics. The interplay between these effects plays a crucial role in pulse evolution. A numerical method, the Hopscotch method, was introduced to solve CNLS. This is a particularly simple method for solving CNLS, and its accuracy was verified by ascertaining the evolution of a single soliton solution of CNLS and comparing this numerical solution with the exact solution. Two applications of CNLS were studied, in hydrodynamics and optics respectively. In hydrodynamics, CNLS is used to govern the interaction of wavepackets in layered fluid. The long-time evolution of periodic solution of CNLS iwas studied. The initial phase difference, amplitude ratio between perturbations and the ratio between the self-phase and cross-phase modulations were found to be important factors in long-time evolution. Different patterns of evolution may result from different combinations of these three effects mentioned above. In optics, CNLS can be used as the governing equation for wavepackets in directional couplers. Soliton interaction in directional couplers was studied, as their performance can be quite different from how they behave in single-mode fibers. Their behaviour was influenced by group-velocity dispersion, intermodal dispersion and linear coupling terms within the equations. Group-velocity dispersion was found to cause pulse coalescence, and intermodal dispersion was the cause of pulse splitting. The effect of group-velocity dispersion depends on the initial separation between the two input pulses. The closer the two pulses are located, the larger the effect on each other; but there will always be intermodal dispersion effect, no matter how far the pulses are separated. The findings of this study contribute to an increased understanding of the roles of different terms within a CNLS. The interplay between these terms can result in different patterns of evolution. ii DOI: 10.5353/th_b2665265 Subjects: Schrodinger equation Hydrodynamics - Mathematical models Optics - Mathematical models
Author: Mark J. Ablowitz
Publisher: SIAM
ISBN: 089871477X
Category : Mathematics
Languages : en
Pages : 433
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Book Description
A study, by two of the major contributors to the theory, of the inverse scattering transform and its application to problems of nonlinear dispersive waves that arise in fluid dynamics, plasma physics, nonlinear optics, particle physics, crystal lattice theory, nonlinear circuit theory and other areas. A soliton is a localised pulse-like nonlinear wave that possesses remarkable stability properties. Typically, problems that admit soliton solutions are in the form of evolution equations that describe how some variable or set of variables evolve in time from a given state. The equations may take a variety of forms, for example, PDEs, differential difference equations, partial difference equations, and integrodifferential equations, as well as coupled ODEs of finite order. What is surprising is that, although these problems are nonlinear, the general solution that evolves from almost arbitrary initial data may be obtained without approximation.
Author: Gadi Fibich
Publisher: Springer
ISBN: 3319127489
Category : Mathematics
Languages : en
Pages : 870
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Book Description
This book is an interdisciplinary introduction to optical collapse of laser beams, which is modelled by singular (blow-up) solutions of the nonlinear Schrödinger equation. With great care and detail, it develops the subject including the mathematical and physical background and the history of the subject. It combines rigorous analysis, asymptotic analysis, informal arguments, numerical simulations, physical modelling, and physical experiments. It repeatedly emphasizes the relations between these approaches, and the intuition behind the results. The Nonlinear Schrödinger Equation will be useful to graduate students and researchers in applied mathematics who are interested in singular solutions of partial differential equations, nonlinear optics and nonlinear waves, and to graduate students and researchers in physics and engineering who are interested in nonlinear optics and Bose-Einstein condensates. It can be used for courses on partial differential equations, nonlinear waves, and nonlinear optics. Gadi Fibich is a Professor of Applied Mathematics at Tel Aviv University. “This book provides a clear presentation of the nonlinear Schrodinger equation and its applications from various perspectives (rigorous analysis, informal analysis, and physics). It will be extremely useful for students and researchers who enter this field.” Frank Merle, Université de Cergy-Pontoise and Institut des Hautes Études Scientifiques, France
Author: Jialin Hong
Publisher: Springer Nature
ISBN: 9813290692
Category : Mathematics
Languages : en
Pages : 220
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Book Description
This book provides some recent advance in the study of stochastic nonlinear Schrödinger equations and their numerical approximations, including the well-posedness, ergodicity, symplecticity and multi-symplecticity. It gives an accessible overview of the existence and uniqueness of invariant measures for stochastic differential equations, introduces geometric structures including symplecticity and (conformal) multi-symplecticity for nonlinear Schrödinger equations and their numerical approximations, and studies the properties and convergence errors of numerical methods for stochastic nonlinear Schrödinger equations. This book will appeal to researchers who are interested in numerical analysis, stochastic analysis, ergodic theory, partial differential equation theory, etc.
Author: Catherine Sulem
Publisher: Springer Science & Business Media
ISBN: 0387227687
Category : Mathematics
Languages : en
Pages : 363
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Book Description
Filling the gap between the mathematical literature and applications to domains, the authors have chosen to address the problem of wave collapse by several methods ranging from rigorous mathematical analysis to formal aymptotic expansions and numerical simulations.
Author: Carel Petrus Olivier
Publisher:
ISBN:
Category : Gross-Pitaevskii equations
Languages : en
Pages : 150
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Book Description
Author: Stéphane Cordier
Publisher: European Mathematical Society
ISBN: 9783037190128
Category : Differential equations, Hyperbolic
Languages : en
Pages : 372
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Book Description
Hyperbolic and kinetic equations arise in a large variety of industrial problems. For this reason, the Summer Mathematical Research Center on Scientific Computing and its Applications (CEMRACS), held at the Center of International Research in Mathematics (CIRM) in Luminy, was devoted to this topic. During a six-week period, junior and senior researchers worked full time on several projects proposed by industry and academia. Most of this work was completed later on, and the present book reflects these results. The articles address modelling issues as well as the development and comparisons of numerical methods in different situations. The applications include multi-phase flows, plasma physics, quantum particle dynamics, radiative transfer, sprays, and aeroacoustics. The text is aimed at researchers and engineers interested in applications arising from modelling and numerical simulation of hyperbolic and kinetic problems.
