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The nonlinear Sch\"{o}dinger equation (NLSE) with a non-Hermitian term is the model for various phenomena in nonlinear open quantum systems. We deal with the Cauchy problem for the nonlocal generalization of multidimensional NLSE with a…

Mathematical Physics · Physics 2024-03-08 A. E. Kulagin , A. V. Shapovalov

We prove that any potential symmetry of a system of evolution equations reduces to a Lie symmetry through a nonlocal transformation of variables. Based on this fact is our method of group classification of potential symmetries of systems of…

Exactly Solvable and Integrable Systems · Physics 2009-06-18 Renat Zhdanov

In this research, we would like to study the global (in time) existence of small data solutions to the following damped $\sigma$-evolution equations with nonlocal (in space) nonlinearity: \begin{equation*}…

Analysis of PDEs · Mathematics 2021-07-30 Khaldi Said

An algebraic method is devised to look for non-local symmetries of the pseudopotential type of nonlinear field equations. The method is based on the use of an infinite-dimensional subalgebra of the prolongation algebra $L$ associated with…

High Energy Physics - Theory · Physics 2007-05-23 M. Leo , R. A. Leo , G. Soliani , P. Tempesta

This article is a sequel to [M.Z.Z.1] aimed at completing the characterization of the pathwise local structure of solutions of semilinear stochastic evolution equations (see's) and stochastic partial differential equations (spde's) near…

Probability · Mathematics 2008-09-19 Salah-Eldin A. Mohammed , Tusheng Zhang , Huaizhong Zhao

We propose an approach to nonlinear evolution equations with large and decaying external potentials that addresses the question of controlling globally-in-time the nonlinear interactions of localized waves in this setting. This problem…

Analysis of PDEs · Mathematics 2020-03-03 Fabio Pusateri , Avy Soffer

We consider an initial value problem for a nonlocal differential equation with a bistable nonlinearity in several space dimensions. The equation is an ordinary differential equation with respect to the time variable t, while the nonlocal…

Analysis of PDEs · Mathematics 2016-06-02 Danielle Hilhorst , Hiroshi Matano , Thanh Nam Nguyen , Hendrik Weber

We study nonlocal conservation laws with a discontinuous flux function of regularity $\mathsf{L}^{\infty}(\mathbb{R})$ in the spatial variable and show existence and uniqueness of weak solutions in…

Analysis of PDEs · Mathematics 2021-10-22 Alexander Keimer , Lukas Pflug

We study the general properties of spectral curves associated to doubly-periodic solutions of Korteweg-deVries, sine-Gordon, Non-linear Schr\"odinger and 1D Toda equations, and construct examples of arbitrary genus.

Algebraic Geometry · Mathematics 2015-05-18 Armando Treibich

In this paper, we prove existence results of a one-dimensional periodic solution to equations with the fractional Laplacian of order $s\in(1/2,1)$, singular nonlinearity, and gradient term under various situations, including nonlocal…

Analysis of PDEs · Mathematics 2021-11-16 Lisbeth Carrero , Alexander Quaas

Here we study the abstract nonlinear differential equation of second order that in special case is the equation of the type of equation of traffic flow. We prove the solvability theorem for the posed problem under the appropriate conditions…

Analysis of PDEs · Mathematics 2017-01-26 Kamal N. Soltanov

We consider infinite-dimensional parabolic rough evolution equations. Using regularizing properties of analytic semigroups we prove global-in-time existence of solutions and investigate random dynamical systems for such equations.

Probability · Mathematics 2019-04-08 Robert Hesse , Alexandra Neamtu

We prove existence, uniqueness and several qualitative properties for evolution equations that combine local and nonlocal diffusion operators acting in different subdomains and coupled in such a way that the resulting evolution equation is…

Analysis of PDEs · Mathematics 2019-03-19 Alejandro Gárriz , Fernando Quirós , Julio D. Rossi

In this paper we study the phase of self-similar solutions to general Nonlinear Schr\"odinger equations. From this analysis we gain insight on the dynamics of nontrivial solutions and a deeper understanding of the way collective coordinate…

Pattern Formation and Solitons · Physics 2009-11-10 Victor M. Perez-Garcia

In this paper, we take advantage of the bilinearization reduction method to consider the local and nonlocal reduction of a discrete Ablowitz-Kaup-Newell-Segur equation. Exact solutions in double Casoratian form to the reduced nonlocal…

Exactly Solvable and Integrable Systems · Physics 2023-02-14 Song-lin Zhao , Xiao-bo Xiang , Shou-feng Shen

In this paper, we study regularity estimates for a class of degenerate, fully nonlinear elliptic equations with arbitrary nonhomogeneous degeneracy laws. We establish that viscosity solutions are locally continuously differentiable under…

Analysis of PDEs · Mathematics 2025-01-08 Pêdra D. S. Andrade , Thialita M. Nascimento

We obtain a lower bound for the period of periodic solutions of semilinear evolution equations for the full range of nonlinear terms for which standard local existence theory applies. This lower bound depends on the Lipschitz constant of…

Analysis of PDEs · Mathematics 2012-12-21 James C. Robinson , Alejandro Vidal-López

We consider the inviscid Leray-$\alpha$ equations - an inviscid nonlocal regularisation of the Euler equations. In the first part, we prove the convergence of strong solutions of the Leray-$\alpha$ equations to strong solutions of the Euler…

Analysis of PDEs · Mathematics 2026-01-22 Jule Schindler , Emil Wiedemann

For general second order evolution equations, we prove an optimal condition on the degree of unboundedness of the damping, that rules out finite-time extinction. We show that control estimates give energy decay rates that explicitly depend…

Analysis of PDEs · Mathematics 2024-09-23 Perry Kleinhenz , Ruoyu P. T. Wang

We consider a class of nonlinear Schrodinger equation in four and five space dimensions with an attractive potential. The nonlinearity is local but rather general encompassing for the first time both subcritical and supercritical (in L2)…

Analysis of PDEs · Mathematics 2009-06-22 E. Kirr , O. Mizrak