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The soliton structure of a gauge theory recently proposed to describe chiral excitations in the Fractional Quantum Hall Effect is investigated. A new type of non-linear derivative Schr\"odinger equation emerges as an effective description…

High Energy Physics - Theory · Physics 2009-10-30 L. Griguolo , D. Seminara

The stability and dynamical properties of the so-called resonant nonlinear Schr\"odinger (RNLS) equation, are considered. The RNLS is a variant of the nonlinear Schr\"odinger (NLS) equation with the addition of a perturbation used to…

Pattern Formation and Solitons · Physics 2020-03-05 F. Williams , F. Tsitoura , T. P. Horikis , P. G. Kevrekidis

In a previous paper (Matsuno 2011 {\it J. Phys. A: Math. Theore.} {\bf 44} 495202), we have presented a determinantal expression of the bright $N$-soliton solution for a multi-component modified nonlinear Schr\"odinger (NLS) system with…

Exactly Solvable and Integrable Systems · Physics 2019-04-04 Yoshimasa Matsuno

In this paper we study the following class of fractional relativistic Schr\"odinger equations: \begin{equation*} \left\{ \begin{array}{ll} (-\Delta+m^{2})^{s}u + V(\varepsilon x) u= f(u) &\mbox{ in } \mathbb{R}^{N}, \\ u\in…

Analysis of PDEs · Mathematics 2023-03-24 Vincenzo Ambrosio

We measure evolution of spectra, spatial correlation functions and probability density functions (PDFs) of waves appearance for a set of one-dimensional NLS-like equations of focusing type, namely for the classical integrable Nonlinear…

Optics · Physics 2015-03-20 Dmitry Agafontsev , Vladimir Zakharov

In this paper, we consider the focusing fractional nonlinear Schr\"{o}dinger equation (FNLS) on the waveguide manifolds $\mathbb{R}^d\times\mathbb{T}^m$ both in the isotropic and anisotropic case. Under different conditions, we establish…

Analysis of PDEs · Mathematics 2023-06-22 Amin Esfahani , Hichem Hajaiej , Yongming Luo , Linjie Song

In this paper, the existence and orbital stability of the periodic standing waves solutions for the nonlinear fractional Schrodinger (fNLS) equation with cubic nonlinearity is studied. The existence is determined by using a minimizing…

In this paper, we investigate the following fractional Sobolev critical nonlinear Schr\"{o}dinger (NLS) coupled systems: \begin{equation*} \left\{\begin{array}{lll} (-\Delta)^{s} u=\mu_{1}…

Analysis of PDEs · Mathematics 2024-07-23 Jiabin Zuo , Vicenţiu D. Rădulescu

Using Nottale's theory of scale relativity, we derive a generalized Schr\"odinger equation applying to dark matter halos. This equation involves a logarithmic nonlinearity associated with an effective temperature and a source of…

General Relativity and Quantum Cosmology · Physics 2019-09-16 Pierre-Henri Chavanis

In this paper we focus our attention on the following nonlinear fractional Schr\"odinger equation with magnetic field \begin{equation*} \varepsilon^{2s}(-\Delta)_{A/\varepsilon}^{s}u+V(x)u=f(|u|^{2})u \quad \mbox{ in } \mathbb{R}^{N},…

Analysis of PDEs · Mathematics 2017-09-26 Vincenzo Ambrosio , Pietro d'Avenia

We examine a fractional Discrete Nonlinear Schrodinger dimer, where the usual first-order derivative of the time evolution is replaced by a non integer-order derivative. The dimer is nonlinear (Kerr) and PT -symmetric, and we examine the…

Pattern Formation and Solitons · Physics 2021-02-05 Mario I. Molina

The local and non-local vector Non-linear Schrodinger Equation (NLSE) with a general cubic non-linearity are considered in presence of a linear term characterized, in general, by a non-hermitian matrix which under certain condition…

Exactly Solvable and Integrable Systems · Physics 2022-09-29 Debdeep Sinha

By fractional relativity we mean a theoretical framework to study physics with the dispersion relation $E^{\alpha}=m^{\alpha}c^{2\alpha}+p^{\alpha}c^{\alpha}$, which recovers special relativity at $\alpha=2$. One such framework is…

General Physics · Physics 2018-10-03 Tower Wang

Mandelbrot introduced the concept of fractals to describe the non-Euclidean shape of many aspects of the natural world. In the time series context he proposed the use of fractional Brownian motion (fBm) to model non-negligible temporal…

Space Physics · Physics 2007-10-15 N. W. Watkins , D. Credgington , B. Hnat , S. C. Chapman , M. P. Freeman , J. Greenhough

This paper considers the question of global in time existence and asymptotic behavior of small-data solutions of nonlinear dispersive equations with a real potential $V$. The main concern is treating nonlinearities whose degree is low…

Analysis of PDEs · Mathematics 2013-03-19 Pierre Germain , Zaher Hani , Samuel Walsh

We consider the quintic nonlinear Schr\"odinger equation (NLS) on the circle. We prove that there exist solutions corresponding to an initial datum built on four Fourier modes which form a resonant set, which have a non trivial dynamic that…

Analysis of PDEs · Mathematics 2016-01-20 Benoît Grebert , Laurent Thomann

In this paper we present a general framework for solving the stationary nonlinear Schr\"odinger equation (NLSE) on a network of one-dimensional wires modelled by a metric graph with suitable matching conditions at the vertices. A formal…

Pattern Formation and Solitons · Physics 2016-05-05 Sven Gnutzmann , Daniel Waltner

We study the azimuthal modulational instability of vortices with different topological charges, in the focusing two-dimensional nonlinear Schr{\"o}dinger (NLS) equation. The method of studying the stability relies on freezing the radial…

Pattern Formation and Solitons · Physics 2012-05-11 R. M. Caplan , Q. E. Hoq , R. Carretero-González , P. G. Kevrekidis

We study the Cauchy problem for the focusing nonlinear Schrodinger (NLS) equation. Using the DBAR generalization of the nonlinear steepest descent method we compute the long time asymptotic expansion of the solution in any fixed space-time…

Mathematical Physics · Physics 2016-04-27 Michael Borghese , Robert Jenkins , Kenneth D. T. -R. McLaughlin

This paper is concerned with the following space-time fractional stochastic nonlinear partial differential equation \begin{equation*} \left(\partial_t^{\beta}+\frac{\nu}{2}\left(-\Delta\right)^{\alpha / 2}\right) u=I_{t}^{\gamma}\Big[…

Probability · Mathematics 2025-06-17 Yuhui Guo , Jiang-Lun Wu