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20222026
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math.AP2026

Spectral-Edge Continuation, Dimensional Crossover, and Endpoint Stability for Partially Confined Nonlinear Schrödinger Equations

Xuexiu Zhong

We study the global geometry and endpoint dynamics of positive solutions of , , . Despite the loss of coercivity at…

math.AP2026

Liouville theorems and symmetry of positive solutions for partially confined nonlinear Schrödinger equations

Zhijie Chen, Youjun Wang, Jianjun Zhang +1

We study positive solutions of the partially confined stationary nonlinear Schrödinger equation $$-Δu+|y|^2u+λu=g(u),\quad (y,z)\in\mathbb{R}^d\times\mathbb{R}^{m},\quad 1\leq d<N,…

math.AP2025

Uniqueness of radial solutions for -Laplacian equations in low dimensions

Patrizia Pucci, Jianjun Zhang, Xuexiu Zhong

This paper extends the uniqueness results of Serrin and Tang [\textit{Indiana Univ. Math. J.}, 49 (2000), pp. 897--923] to the low-dimensional case with . We c…

math.AP2025

Multiple normalized solutions for two coupled Gross-Pitaevskii equations with attractive interactions and mass constriants

Zhang Jianjun, Zhong Xuexiu, Zhou Jinfang

We are concerned with the following system of two coupled time-independent Gross-Pitaevskii equations $$ \begin{cases} -Δu+λ_1 u=μ_1|u|^{p-2}u+να|u|^{α-2}|v|^βu ~\hbox{in}~ \R^N,\\…

math.AP2025

Normalized solutions of coupled Sobolev critical Schrodinger equations with mass subcritical couplings

Zhang Jianjun, Zhong Xuexiu, Zhou Jinfang

We are concerned with qualitative properties of positive solutions to the following coupled Sobolev critical Schrödinger equations $$ \begin{cases} -Δu+λ_1 u=μ_1|u|^{2^*-2}u+να|u|^…

math.AP2025

Serrin-type Overdetermination in Scaling Limits: Sharp Existence and Asymptotic Behavior of Quasi-linear Schrödinger Energy Ground States

Louis Jeanjean, Jianjun Zhang, Xuexiu Zhong

This paper establishes optimal existence results and limiting profiles for energy ground states of the quasi-linear Schrödinger equation $$ -Δu - Δ(|u|^{2})u + λu = |u|^{p-2}u \qua…

math.AP2024

The mass-mixed case for normalized solutions to NLS equations in dimension two

Daniele Cassani, Ling Huang, Cristina Tarsi +1

\noindent We are concerned with positive normalized solutions to the following semi-linear Schrödinger equations $$ -Δu+λu=f(u), \quad\…

math.AP2024

Single-peak and multi-peak solutions for Hamiltonian elliptic systems in dimension two

Hui Zhang, Minbo Yang, Jianjun Zhang +1

This paper is concerned with the Hamiltonian elliptic system in dimension two\begin{equation*}\aligned \left\{ \begin{array}{lll} -ε^2Δu+V(x)u=g(v)\ & \text{in}\quad \mathbb{R}^2,\…

math.AP2024

Normalized solutions of quasilinear Schrödinger equations with a general nonlinearity

Ting Deng, Marco Squassina, Jianjun Zhang +1

We are concerned with solutions of the following quasilinear Schrödinger equations \begin{eqnarray*} -{\mathrm{div}}\left(φ^{2}(u) \nabla u\right)+φ(u) φ^{\prime}(u)|\nabla u|^{2}+…

math.AP2023

Normalized ground states for a coupled Schrödinger system: Mass super-critical case

Louis Jeanjean, Jianjun Zhang, Xuexiu Zhong

We consider the existence of solutions to systems of coupled Schrödinger equations $$ \begin{cases} -Δu+λ_1 u=μ_1 u^{p…

math.AP2022

The existence and multiplicity of solutions for general quasi-linear elliptic equations with sub-cubic nonlinearity

Chen Huang, Jianjun Zhang, Xuexiu Zhong

We consider the existence and multiplicity of solutions for a class of quasi-linear Schrödinger equations which include the modified nonlinear Schrödinger equations. A new perturba…