%0 Journal Article
%T Variational principle for the Kaup-Newell system
%J Journal of Computational Applied Mechanics
%I University of Tehran
%Z 2423-6713
%A Wu, Yue
%A He, JI-Huan
%D 2023
%\ 09/10/2023
%V 54
%N 3
%P 405-409
%! Variational principle for the Kaup-Newell system
%K Variational theory
%K Calculus of variations
%K Lagrange multiplier
%K SchrÃ¶ dinger equation
%K Potential function
%R 10.22059/jcamech.2023.365116.875
%X The Kaup-Newell system describes the pulse propagation in optical fibers. This paper applies the semi-inverse method to construct the systemâ€™s variational formulations, two trial-variational formulations with an unknown function are established, and a detailed derivation is given to determine the unknown function. Finally, the Kaup-Newell system with two variables is converted to a partial differential equation with only one variable.
%U https://jcamech.ut.ac.ir/article_93838_aa88f8b69a11295caadf42c3c1469f05.pdf