New entire positive solution for the nonlinear Schrodinger equation: Coexistence of fronts and bumps

Details New entire positive solution for the nonlinear Schrodinger equation: Coexistence of fronts and bumps New entire positive solution for the nonlinear Schrodinger equation: Coexistence of fronts and bumps

2010-08-13

arxiv.org/abs/1008.2248v2

Mathematics

Analysis of PDEs

5 figures, American Journal of Math (to appear)

Scientific paper

In this paper we construct a new kind of positive solutions of $$\De u-u+u^{p}=0 \text{on} \R^2$$ when $p> 2.$ These solutions $\displaystyle{u(x,z)\sim \om(x-f(z))+ \sum_{i=1}^{\infty}\om_{0}((x, z)-\xi_i\vec{e}_{1})}$ as $L\rightarrow +\infty$ where $\om$ is a unique positive homoclinic solution of $\om"-\om+\om^{p}=0$ in $\R$ ; $\om_{0}$ is the two dimensional positive solution and $\vec{e}_{1}= (1, 0)$ and $\xi_{j}$ are points such that $\xi_{j}= jL+ \mathcal{O}(1)$ for all $j\geq 1.$ This represents a first result on the {\em coexistence} of fronts and bumps. Geometrically, our new solutions correspond to {\em triunduloid} in the theory of CMC surface.

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