Mathematical Theory and Applications ›› 2025, Vol. 45 ›› Issue (3): 96-106.doi: 10.3969/j.issn.1006-8074.2025.03.005

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Normalized Solutions for a Logarithmic Schrödinger Equation

LIU Xiang; LEI Chunyu*   

  1. School of Data Science and Information Engineering, Guizhou Minzu University, Guiyang 550025, China
  • Online:2025-09-28 Published:2025-11-07
  • Supported by:
    This work is supported by the Natural Science Research Project of Department of Education of Guizhou Province (No. QJJ2023062), the National Natural Science Foundation of China (No. 52174184)

Abstract:

In this paper, we consider the following logarithmic Schrödinger equation:

\begin{equation*}

-\Delta u+\omega u =u\log|u|^2,~~ u\in H^1(\mathbb{R}^N),

\end{equation*}

where $N\geq3$, and $\omega>0$ is a constant. With an auxiliary equation, we obtain the existence of normalized solutions by using the constrained variational method.

Key words: Logarithmic Schr?dinger equation, Normalized solution, Constrained variational method , Minimization problem