Skip to Main Content


AMS eBook CollectionsOne of the world's most respected mathematical collections, available in digital format for your library or institution


Semiclassical standing waves with clustering peaks, for nonlinear Schrödinger equations

About this Title

Jaeyoung Byeon, Department of Mathematical Sciences, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea and Kazunaga Tanaka, Department of Mathematics, School of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan

Publication: Memoirs of the American Mathematical Society
Publication Year: 2014; Volume 229, Number 1076
ISBNs: 978-0-8218-9163-6 (print); 978-1-4704-1530-3 (online)
DOI: https://doi.org/10.1090/memo/1076
Published electronically: October 10, 2013
Keywords: Nonlinear Schödinger equations, Singular perturbation, semi-classical standing waves, local variational method, interaction estimate, translation flow
MSC: Primary 35J60, (35B25, 35Q55, 58E05)

View full volume PDF

View other years and numbers:

Table of Contents

Chapters

  • 1. Introduction and results
  • 2. Preliminaries
  • 3. Local centers of mass
  • 4. Neighborhood $\Omega _\varepsilon (\rho ,R,\beta )$ and minimization for a tail of $u$ in $\Omega _\varepsilon$
  • 5. A gradient estimate for the energy functional
  • 6. Translation flow associated to a gradient flow of $V(x)$ on $\mathbf {R}^N$
  • 7. Iteration procedure for the gradient flow and the translation flow
  • 8. An $(N+1)\ell _0$-dimensional initial path and an intersection result
  • 9. Completion of the proof of Theorem
  • 10. Proof of Proposition
  • 11. Proof of Lemma
  • 12. Generalization to a saddle point setting

Abstract

We study the following singularly perturbed problem \[ -\epsilon ^2\Delta u+V(x)u = f(u) \quad \hbox {in}\ \mathbf {R}^N. \] Our main result is the existence of a family of solutions with peaks that cluster near a local maximum of $V(x)$. A local variational and deformation argument in an infinite dimensional space is developed to establish the existence of such a family for a general class of nonlinearities $f$. Earlier works in this direction can be found in [KW, DLY, DY, NY] for $f(\xi )=\xi ^p$ ($1 < p < \frac { N+2}{N-2}$ when $N \geq 3$, $1< p < \infty$ when $N=1,2$). These papers use the Lyapunov-Schmidt reduction method, where it is essential to have information about the null space of the linearization of a solution of the limit equation $-\Delta u+u =u^p$. Such spectral information is difficult to get and can only be obtained for very special $f’s$. Our new approach in this memoir does not require such a detailed knowledge of the spectrum and works for a much more general class of nonlinearities $f$.

References [Enhancements On Off] (What's this?)

References