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7 papers

math.AP2026

Existence and Limiting Profiles of Normalized Travelling Wave Solutions for the Pseudo-Relativistic Schrödinger Equation with Logarithmic Nonlinearity

Pietro d'Avenia, Qihan He, Alessio Pomponio +1

The paper investigates normalized travelling wave solutions of a pseudo‑relativistic Schrödinger equation with a logarithmic nonlinearity, establishing existence thresholds under a…

math.AP2026

Infinitely many multi-peaks solutions for a nonlinear Hartree system

Qihan He, Qingfang Wang

In this paper, we study the following nonlinear Hartree system: for , with $u_i\in H^1(…

math.AP2026

Multiple positive solutions with prescribed masses for a coupled Schrödinger system: mass mixed and Sobolev critical coupled case

Qing Guo, Qihan He, Wei Shuai +1

The aim of this paper is to establish multiple positive normalized solutions to the following coupled Schröd…

math.AP20262 cited

Sharp interaction estimates and their application: existence of normalized ground states to coupled Schrödinger systems with potentials

Yinbin Deng, Qihan He, Xuexiu Zhong

In this paper, our aim is to prove the existence of normalized ground state for the following Schrödinger systems with potentials $$\begin{cases} -Δu_1+V_1(x)u_1+λ_1 u_1=\partia…

math.AP2025

Existence and multiplicity of normalized solutions for the quasi-linear Schrödinger equations with mixed nonlinearities

Qihan He, Hao Wang

In this paper, we study the existence and multiplicity of the normalized solutions to the following quasi-linear problem \begin{equation*} -Δu-Δ(|u|^2)u+λu=|u|^{p-2}u+τ|u|^{q-2…

math.AP2025

Existence and multiplicity of positive solutions to a critical elliptic equation with logarithmic perturbation

Qihan He, Yiqing Pan

We consider the existence and multiplicity of positive solutions for the following critical problem with logarithmic term: \begin{equation*}\label{eq11}\left\{ \begin{array}{ll} -Î…