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This paper is concerned with a nonlinear fractional Sch\"ordinger system in $\mathbb{{R}}$ with intraspecies interactions $a_{i}>0 \ (i=1,2)$ and interspecies interactions $\beta \in\mathbb{{R}}$. We study this system by solving an…

Analysis of PDEs · Mathematics 2025-05-02 Chungen Liu , Zhigao Zhang , Jiabin Zuo

We find positive non-radial solutions for a system of Schr\"odinger equations in a weak fully attractive or repulsive regime in presence of an external radial trapping potential that exhibits a maximum or a minimum at infinity.

Analysis of PDEs · Mathematics 2022-03-04 Angela Pistoia , Giusi Vaira

This paper mainly investigates several limit properties of normalized solutions for the fractional Schr\"{o}dinger-Poisson system, including existence, concentration behaviors and local uniqueness. It is worth noting that our results on the…

Analysis of PDEs · Mathematics 2026-03-17 Lintao Liu , Haidong Yang

In this paper we study the existence, multiplicity and concentration behavior of solutions for the following critical fractional Schr\"odinger system \begin{equation*} \left\{ \begin{array}{ll} \varepsilon^{2s} (-\Delta)^{s}u+V(x)…

Analysis of PDEs · Mathematics 2018-09-06 Vincenzo Ambrosio

We establish the existence of positive segregated solutions for competitive nonlinear Schr\"odinger systems in the presence of an external trapping potential, which have the property that each component is obtained from the previous one by…

Analysis of PDEs · Mathematics 2023-01-18 Mónica Clapp , Angela Pistoia

The aim of this paper is to investigate the existence, multiplicity and concentration of positive solutions for the following nonlocal system of fractional Schr\"odinger equations \begin{equation*} \left\{ \begin{array}{ll} \varepsilon^{2s}…

Analysis of PDEs · Mathematics 2019-08-21 Vincenzo Ambrosio

We consider some nonlinear fractional Schr\"odinger equations with magnetic field and involving continuous nonlinearities having subcritical, critical or supercritical growth. Under a local condition on the potential, we use minimax methods…

Analysis of PDEs · Mathematics 2019-03-26 Vincenzo Ambrosio

For the first time, the general nonlinear Schr\"odinger equation is investigated, in which the chromatic dispersion and potential are specified by two arbitrary functions. The equation in question is a natural generalization of a wide class…

Exactly Solvable and Integrable Systems · Physics 2024-12-03 Andrei D. Polyanin , Nikolay A. Kudryashov

In this paper we study dynamical properties of blowup solutions to the focusing mass-critical nonlinear fractional Schr\"odinger equation. We establish a profile decomposition and a compactness lemma related to the equation. As a result, we…

Analysis of PDEs · Mathematics 2018-05-22 Van Duong Dinh

The paper is concerned with a system of two coupled time-independent Gross-Pitaevskii equations in $\mathbb{R}^2$, which is used to model two-component Bose-Einstein condensates with both attractive intraspecies and attractive interspecies…

Analysis of PDEs · Mathematics 2017-04-21 Yujin Guo , Xiaoyu Zeng , Huan-Song Zhou

We study the solution theory of the nonlinear Schr\"odinger equation with a concentrated nonlinearity on the torus. In particular, we establish existence and uniqueness of global energy-conserving solutions for initial data in $H^1$. Our…

Analysis of PDEs · Mathematics 2025-10-28 Jinyeop Lee , Andrew Rout

Coupled nonlinear Schrodinger systems describe some physical phenomena such as the propagation in birefringent optical fibers, Kerr-like photorefractive media in optics and Bose-Einstein condensates. In this paper, we study the existence of…

Analysis of PDEs · Mathematics 2007-05-23 Alessio Pomponio

We consider a nonlinear Schr\"odinger system arising in a two-component Bose-Einstein condensate (BEC) with attractive intraspecies interactions and repulsive interspecies interactions in $\mathbb{R}^2$. We get ground states of this system…

Mathematical Physics · Physics 2017-10-04 Yujin Guo , Xiaoyu Zeng , Huan-Song Zhou

We present trapped solitary wave solutions of a coupled nonlinear Schr\"odinger system in $1$+$1$ dimensions in the presence of an external, supersymmetric and complex $\mathcal{PT}$-symmetric potential. The Schr\"odinger system this work…

Pattern Formation and Solitons · Physics 2020-12-02 Efstathios G. Charalampidis , John F. Dawson , Fred Cooper , Avinash Khare , Avadh Saxena

We investigate the existence and local uniqueness of normalized $k$-peak solutions for the fractional Schr\"odinger equations with attractive interactions with a class of degenerated trapping potential with non-isolated critical points.…

Analysis of PDEs · Mathematics 2021-05-06 Qing Guo , Peng Luo , Chunhua Wang , Jing Yang

We consider systems of weakly coupled Schr\"odinger equations with nonconstant potentials and we investigate the existence of nontrivial nonnegative solutions which concentrate around local minima of the potentials. We obtain sufficient and…

Analysis of PDEs · Mathematics 2008-09-25 Eugenio Montefusco , Benedetta Pellacci , Marco Squassina

In this paper we study the existence of solutions to nonlinear Schr\"odinger systems with mixed couplings of attractive and repulsive forces, which arise from the models in Bose-Einstein condensates and nonlinear optics. In particular, we…

Analysis of PDEs · Mathematics 2025-03-25 Qing Guo , Angela Pistoia , Shixin Wen

In this paper we consider a competitive weakly coupled elliptic system in which each species is attracted to a small region and repelled from its complement. In this setting, we establish the existence of infinitely many solutions and of a…

Analysis of PDEs · Mathematics 2024-10-10 Mónica Clapp , Alberto Saldaña , Andrzej Szulkin

In this article, we study the two dimensional focusing finitely and infinitely coupled cubic nonlinear Schr\"odinger system when the mass is equal to the scattering threshold. For the focusing finitely coupled cubic nonlinear Schr\"odinger…

Analysis of PDEs · Mathematics 2025-05-01 Xing Cheng , Zuyu Ma , Jiqiang Zheng

We revisit the following nonlinear Schr\"odinger system \begin{align*}\begin{cases} -\epsilon^{2}\Delta u +P(x) u= \mu_1 u^3 +\beta uv^2, &~\text{in}\;\mathbb {R}^3,\\ -\epsilon^{2}\Delta v+Q(x) v= \mu_2 v^3 +\beta u^2v,…

Analysis of PDEs · Mathematics 2026-02-06 Qingfang Wang , Mingxue Zhai
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