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In this paper, we address the existence of ground state solutions for Schrodinger equations in the presence of local and nonlocal operators and two critical nonlinearities associated with each operator. The situation is completely solved in…

Analysis of PDEs · Mathematics 2026-03-03 Yu Su , Hichem Hajaiej , Hongxia Shi

We prove the existence of a ground state and infinitely many geometrically distinct solutions for static nonlinear Maxwell's equations on $\mathbb{R}^3$. Our existence result relies on a variant of the Symmetric Mountain Pass Theorem that…

Analysis of PDEs · Mathematics 2025-12-24 Rainer Mandel

We focus on the study of the stability properties of ground-states for the system of $M$ coupled semilinear Schr\"odinger equations with power-type nonlinearities and couplings. Our results are generalizations of the theory for the single…

Analysis of PDEs · Mathematics 2015-03-02 Simão Correia

We investigate the existence of ground state solutions for a class of nonlinear scalar field equations defined on whole real line, involving a fractional Laplacian and nonlinearities with Trudinger-Moser critical growth. We handle the lack…

Analysis of PDEs · Mathematics 2016-08-08 João Marcos do Ó , Olímpio H. Miyagaki , Marco Squassina

We study existence and properties of ground states for the nonlinear Schr\"odinger equation with combined power nonlinearities \[ -\Delta u= \lambda u + \mu |u|^{q-2} u + |u|^{p-2} u \qquad \text{in $\mathbb{R}^N$, $N \ge 1$,} \] having…

Analysis of PDEs · Mathematics 2025-01-17 Nicola Soave

We study the existence of ground states for the coupled Schr\"odinger system \begin{equation} \label{ellipticabstract} \left\{ \begin{array}{llll} -\Delta u+u&=&|u|^{2q-2}u+b|v|^q|u|^{q-2}u\\ -\Delta…

Analysis of PDEs · Mathematics 2015-02-09 Filipe Oliveira

In this paper we prove the existence of a nontrivial solution to the nonlinear Schrodinger-Maxwell equations in $\R^3,$ assuming on the nonlinearity the general hypotheses introduced by Berestycki & Lions.

Analysis of PDEs · Mathematics 2015-05-13 Antonio Azzollini , Pietro d'Avenia , Alessio Pomponio

Some focusing coupled Schrodinger equations are investigated. First, existence of ground state is obtained. Second, global and non global existence of solutions are discussed via potential-well method. Finally, strong instability of…

Analysis of PDEs · Mathematics 2015-05-29 Tarek Saanouni

In this paper, we study the ground state solutions of the following coupled nonlinear Schr\"odinger system (P) $-\Delta u_1-\tau_1 u_1 =\mu_1u_1^3+\beta u_1u_2^2$, $ -\Delta u_2-\tau_2 u_2 =\mu_2u_2^3+\beta u_1^2u_2$ in $\Omega$,…

Analysis of PDEs · Mathematics 2026-01-26 Ruijin Xu , Jiabao Su , Rushun Tian

We consider a system of nonlinear Schrodinger equations with three waves interaction studying the existence of ground state solutions. In particular, we find a vector ground state, namely a ground state with the three components all…

Analysis of PDEs · Mathematics 2009-10-20 Alessio Pomponio

We prove existence and multiplicity of bound and ground state solutions, under appropriate conditions on the parameters, for a bi-harmonic stationary system of coupled nonlinear Schr\"odinger--Korteweg-de Vries equations.

Analysis of PDEs · Mathematics 2016-07-05 P. Alvarez-Caudevilla , E. Colorado , R. Fabelo

In this paper we study the existence of ground state solutions for the asymptotically periodic Schr\"odinger-Poisson systems which are coupled by a Schr\"odinger equation of $p$-Laplacian and a Poisson equation of $q$-Laplacian. The method…

Analysis of PDEs · Mathematics 2025-08-26 Yao Du , Linfeng Fan

A class of nonlinear Schroedinger equations with critical power-nonlinearities and potentials exhibiting multiple anisotropic inverse square singularities is investigated. Conditions on strength, location, and orientation of singularities…

Analysis of PDEs · Mathematics 2008-02-06 Veronica Felli

In this paper, we establish the existence of positive ground state solutions for a class of mixed Schr\"{o}dinger systems with concave-convex nonlinearities in $\mathbb{R}^2$, subject to $L^2$-norm constraints; that is, \[ \left\{…

Analysis of PDEs · Mathematics 2026-01-16 Ashutosh Dixit , Amin Esfahani , Hichem Hajaiej , Tuhina Mukherjee

We construct solutions to a class of Schr\"{o}dinger equations involving the fractional laplacian. Our approach is variational in nature, and based on minimization on the Nehari manifold.

Analysis of PDEs · Mathematics 2015-06-11 Simone Secchi

We show the existence and stability of ground state solutions (g.s.s.) for $L^2$-critical magnetic nonlinear Schr\"odinger equations (mNLS) for a class of unbounded electromagnetic potentials. We then give non-existence result by…

Analysis of PDEs · Mathematics 2024-04-03 Oleg Asipchuk , Christopher Leonard , Shijun Zheng

We prove the uniqueness of positive radial solutions for a class of quasi-linear elliptic problems containing, in particular, the quasi-linear Schrodinger equation.

Analysis of PDEs · Mathematics 2011-09-16 Francesca Gladiali , Marco Squassina

We prove the existence of ground state solutions for a class of nonlinear elliptic equations, arising in the production of standing wave solutions to an associated family of nonlinear Schr\"odinger equations. We examine two constrained…

Analysis of PDEs · Mathematics 2012-03-19 Hans Christianson , Jeremy Marzuola , Jason Metcalfe , Michael Taylor

We develop a new approach to the investigation of normalized solutions for nonlinear Schr\"odinger equations based on the analysis of the masses of ground states of the corresponding action functional. Our first result is a complete…

Analysis of PDEs · Mathematics 2024-11-18 Colette De Coster , Simone Dovetta , Damien Galant , Enrico Serra

We prove the existence of ground state solutions by variational methods to the nonlinear Choquard equations with a nonlinear perturbation \[ -{\Delta}u+ u=\big(I_\alpha*|u|^{\frac{\alpha}{N}+1}\big)|u|^{\frac{\alpha}{N}-1}u+f(x,u)\qquad…

Analysis of PDEs · Mathematics 2020-03-12 Jean Van Schaftingen , Jiankang Xia