Taiwanese Journal of Mathematics

Infinitely Many Solutions for Sublinear Modified Nonlinear Schrödinger Equations Perturbed from Symmetry

Liang Zhang, Xianhua Tang, and Yi Chen

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Abstract

In this paper, we consider the existence of infinitely many solutions for the following perturbed modified nonlinear Schrödinger equations \[ \begin{cases} -\Delta u - \Delta(|u|^{\alpha}) |u|^{\alpha-2}u = g(x,u) + h(x,u) &x \in \Omega, \\ u = 0 &x \in \partial \Omega, \end{cases} \] where $\Omega$ is a bounded smooth domain in $\mathbb{R}^N$ ($N \geq 1$) and $\alpha \geq 2$. Under the condition that $g(x,u)$ is sublinear near origin with respect to $u$, we study the effect of non-odd perturbation term $h(x,u)$ which breaks the symmetry of the associated energy functional. With the help of modified Rabinowitz's perturbation method and the truncation method, we prove that this equation possesses a sequence of small negative energy solutions approaching to zero.

Article information

Source
Taiwanese J. Math., Advance publication (2019), 26 pages.

Dates
First available in Project Euclid: 11 October 2018

Permanent link to this document
https://projecteuclid.org/euclid.twjm/1539223225

Digital Object Identifier
doi:10.11650/tjm/181002

Subjects
Primary: 35J20: Variational methods for second-order elliptic equations 35J65: Nonlinear boundary value problems for linear elliptic equations 35Q55: NLS-like equations (nonlinear Schrödinger) [See also 37K10]

Keywords
broken symmetry infinitely many solutions Rabinowitz's perturbation method modified nonlinear Schrödinger equations

Citation

Zhang, Liang; Tang, Xianhua; Chen, Yi. Infinitely Many Solutions for Sublinear Modified Nonlinear Schrödinger Equations Perturbed from Symmetry. Taiwanese J. Math., advance publication, 11 October 2018. doi:10.11650/tjm/181002. https://projecteuclid.org/euclid.twjm/1539223225


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