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Book
Defocusing nonlinear Schrödinger equations
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ISBN: 9781108590518 9781108681674 1108681670 1108590519 9781108472081 Year: 2019 Publisher: Cambridge Cambridge University Press

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Abstract

This study of Schrödinger equations with power-type nonlinearity provides a great deal of insight into other dispersive partial differential equations and geometric partial differential equations. It presents important proofs, using tools from harmonic analysis, microlocal analysis, functional analysis, and topology. This includes a new proof of Keel-Tao endpoint Strichartz estimates, and a new proof of Bourgain's result for radial, energy-critical NLS. It also provides a detailed presentation of scattering results for energy-critical and mass-critical equations. This book is suitable as the basis for a one-semester course, and serves as a useful introduction to nonlinear Schrödinger equations for those with a background in harmonic analysis, functional analysis, and partial differential equations.


Book
Stability of KAM tori for nonlinear Schrödinger equation
Authors: --- ---
ISBN: 1470427516 Year: 2015 Publisher: Providence, Rhode Island : American Mathematical Society,

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The authors prove the long time stability of KAM tori (thus quasi-periodic solutions) for nonlinear Schrödinger equation sqrt{-1}, u_{t}=u_{xx}-M_{xi}u+varepsilon|u|^2u, subject to Dirichlet boundary conditions u(t,0)=u(t,pi)=0, where M_{xi} is a real Fourier multiplier. More precisely, they show that, for a typical Fourier multiplier M_{xi}, any solution with the initial datum in the delta-neighborhood of a KAM torus still stays in the 2delta-neighborhood of the KAM torus for a polynomial long time such as |t|leq delta^{-mathcal{M}} for any given mathcal M with 0leq mathcal{M}leq C(varepsilon), where C(varepsilon) is a constant depending on varepsilon and C(varepsilon)ightarrowinfty as varepsilonightarrow0.


Book
Semiclassical standing waves with clustering peaks for nonlinear Schrödinger equations
Authors: ---
ISBN: 1470415305 Year: 2013 Publisher: Providence, Rhode Island : American Mathematical Society,

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Book
Stability of KAM tori for nonlinear Schrödinger equation
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ISBN: 9781470416577 Year: 2016 Publisher: Providence, Rhode Island : American Mathematical Society,


Book
Localization in periodic potentials
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ISBN: 9780511997754 9781107621541 0511997752 9781139161626 1139161628 9781139157810 1139157817 9781139157810 1107621542 9781139159579 1139159577 9786613342591 6613342599 1107232317 1139160621 1283342596 1139156055 9781107232310 9781139160629 9781283342599 9781139156059 Year: 2011 Publisher: Cambridge Cambridge University Press

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Abstract

This book provides a comprehensive treatment of the Gross-Pitaevskii equation with a periodic potential; in particular, the localized modes supported by the periodic potential. It takes the mean-field model of the Bose-Einstein condensation as the starting point of analysis and addresses the existence and stability of localized modes. The mean-field model is simplified further to the coupled nonlinear Schrödinger equations, the nonlinear Dirac equations, and the discrete nonlinear Schrödinger equations. One of the important features of such systems is the existence of band gaps in the wave transmission spectra, which support stationary localized modes known as the gap solitons. These localized modes realise a balance between periodicity, dispersion and nonlinearity of the physical system. Written for researchers in applied mathematics, this book mainly focuses on the mathematical properties of the Gross-Pitaevskii equation. It also serves as a reference for theoretical physicists interested in localization in periodic potentials.

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