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We provide several novel solutions of the coupled Ablowitz-Musslimani (AM) version of the nonlocal nonlinear Schr\"odinger (NLS) equation and the coupled nonlocal modified Korteweg-de Vries (mKdV) equations. In each case we compare and…

Exactly Solvable and Integrable Systems · Physics 2023-08-22 Avinash Khare , Avadh Saxena

The Schr\"odinger-like equations for the marginal and conditional probability amplitudes resulting from the exact factorization of the wavefunction of a two-component system are derived in a form that is invariant to gauge and coordinate…

Quantum Physics · Physics 2022-07-06 Ryan Requist

In this paper, we consider nonlocal Schr\"odinger equations with certain potentials $V$ given by an integro-differential operator $L_K$ as follows; \begin{equation*}L_K u+V u=f\,\,\text{ in $\BR^n$ }\end{equation*} where $V\in\rh^q$ for…

Classical Analysis and ODEs · Mathematics 2016-12-22 Woocheol Choi , Yong-Cheol Kim

This paper investigates a reverse space-time higher-order modified self-steepening nonlinear Schr\"odinger equation, which distinguishes its standard local counterparts through the reverse space-time symmetry. The integrability of this…

Exactly Solvable and Integrable Systems · Physics 2025-11-11 Yanan Wang , Xi-hu Wu

In this article, we prove the existence of at least one positive solution for the mixed local-nonlocal semipositone problem \begin{equation*} \left\{ \begin{aligned} -\Delta_p u+ (-\Delta)^s_p u &= \lambda f(u) && \text{in } \Omega, u &= 0…

Analysis of PDEs · Mathematics 2026-04-08 Komal Verma , Gaurav Dwivedi

In this work, we investigate the existence and orbital (in)stability of several branches of standing--wave solutions for the cubic nonlinear Schr\"odinger equation (NLS) posed on a looping--edge graph $\mathcal{G}$, consisting of a circle…

Analysis of PDEs · Mathematics 2026-04-13 Jaime Angulo Pava , Alexander Muñoz

A number of non-Markovian stochastic Schr\"odinger equations, ranging from the numerically exact hierarchical form towards a series of perturbative expressions sequentially presented in an ascending degrees of approximations are revisited…

Chemical Physics · Physics 2018-08-08 Yuchen Wang , Yaling Ke , Yi Zhao

We show that symmetric and positive profiles of ground-state standing-wave of the non-linear Schr\"odinger equation are non-degenerate and unique up to a translation of the argument and multiplication by complex numbers in the unit sphere.…

Analysis of PDEs · Mathematics 2017-09-05 Daniele Garrisi , Vladimir Georgiev

We are interested in standing waves of a modified Schr\"odinger equation coupled with the Chern-Simons gauge theory. By applying a constraint minimization of Nehari-Pohozaev type, we prove the existence of radial ground state solutions. We…

Analysis of PDEs · Mathematics 2017-12-05 Pietro d'Avenia , Alessio Pomponio , Tatsuya Watanabe

We study the theory of scattering for the Maxwell-Schr"odinger system in space dimension 3,in the Coulomb gauge.In the special case of vanishing asymptotic magnetic field,we prove the existence of modified wave operators for that system…

Analysis of PDEs · Mathematics 2015-06-26 J. Ginibre , G. Velo

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 prove that the wave operators for Schr\"odinger operators with multi-center local point interactions are the scaling limits of the ones for Schr\"odinger operators with regular potentials. We simultaneously present a proof of the…

Mathematical Physics · Physics 2019-08-09 Artbazar Galtbayar , Kenji Yajima

We investigate the qualitative properties of positive solutions to mixed local-nonlocal equations with indefinite nonlinearities, emphasizing the interaction between classical and fractional Laplacians. We first establish maximum principles…

Analysis of PDEs · Mathematics 2026-04-29 Pengyan Wang , Leyun Wu

We study the existence and multiplicity of positive solutions in $H^1(\mathbb{R}^N)$, $N\ge3$, with prescribed $L^2$-norm, for the (stationary) nonlinear Schr\"odinger equation with Sobolev critical power nonlinearity. It is well known…

Analysis of PDEs · Mathematics 2025-05-09 Gianmaria Verzini , Junwei Yu

Solitary waves in one-dimensional periodic media are discussed employing the nonlinear Schr\"odinger equation with a spatially periodic potential as a model. This equation admits two families of gap solitons that bifurcate from the edges of…

Pattern Formation and Solitons · Physics 2011-09-06 T. R. Akylas , Guenbo Hwang , Jianke Yang

We revisit aspects of dynamics and stability of localized states in the deterministic and stochastic discrete nonlinear Schr\"odinger equation. By a combination of analytic and numerical techniques, we show that localized initial conditions…

Pattern Formation and Solitons · Physics 2025-07-24 Mahdieh Ebrahimi , Barbara Drossel , Wolfram Just

For the two-dimensional Schr\"odinger equation, the general form of the point transformations such that the result can be interpreted as a Schr\"odinger equation with effective (i.e. position dependent) mass is studied. A wide class of such…

Quantum Physics · Physics 2017-12-13 M. V. Ioffe , D. N. Nishnianidze , V. V. Vereshagin

In this paper, we study a class of nonlocal multi-phase variable exponent problems within the framework of a newly introduced Musielak-Orlicz Sobolev space. We consider two problems, each distinguished by the type of nonlinearity it…

Analysis of PDEs · Mathematics 2025-02-11 Mustafa Avci

The initial value problem for some coupled nonlinear Schrodinger system with unbounded potential is investigated. In the defocusing case, global well-posedness is obtained. For the focusing sign, existence of global and non global solutions…

Analysis of PDEs · Mathematics 2015-06-29 Tarek Saanouni

This paper concerns the normalized ground states for the nonlinear Schr\"{o}dinger equation in the Bopp-Podolsky electrodynamics. This equation has a nonlocal nonlinearity and a mass supercritical power nonlinearity, both of which have deep…

Analysis of PDEs · Mathematics 2025-01-06 Juan Huang , Sheng Wang