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Author ORCID Identifier
Date Available
11-3-2020
Year of Publication
2020
Document Type
Doctoral Dissertation
Degree Name
Doctor of Philosophy (PhD)
College
Arts and Sciences
Department/School/Program
Mathematics
Faculty
Dr. Peter Perry
Faculty
Dr. Ben Braun
Abstract
In the early 1980's, Kodama, Ablowitz and Satsuma, together with Santini, Ablowitz and Fokas, developed the formal inverse scattering theory of the Intermediate Long Wave (ILW) equation and explored its connections with the Benjamin-Ono (BO) and KdV equations. The ILW equation\begin{align*} u_t + \frac{1}{\delta} u_x + 2 u u_x + Tu_{xx} = 0, \end{align*} models the behavior of long internal gravitational waves in stratified fluids of depth $0< \delta < \infty$, where $T$ is a singular operator which depends on the depth $\delta$. In the limit $\delta \to 0$, the ILW reduces to the Korteweg de Vries (KdV) equation, and in the limit $\delta \to \infty$, the ILW (at least formally) reduces to the Benjamin-Ono (BO) equation.
While the KdV equation is very well understood, a rigorous analysis of inverse scattering for the ILW equation remains to be accomplished. There is currently no rigorous proof that the Inverse Scattering Transform outlined by Kodama \textit{et al.} solves the ILW, even for small data. In this dissertation, we seek to help ameliorate this gap in knowledge by presenting a mathematically rigorous construction of the direct scattering map for the ILW's Inverse Scattering Transform.
Digital Object Identifier (DOI)
https://doi.org/10.13023/etd.2020.499
Recommended Citation
Klipfel, Joel, "The Direct Scattering Map for the Intermediate Long Wave Equation" (2020). Theses and Dissertations--Mathematics. 78.
https://uknowledge.uky.edu/math_etds/78
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Analysis Commons, Dynamical Systems Commons, Harmonic Analysis and Representation Commons
