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Gap solitons near a band edge of a spatially periodic nonlinear PDE can be formally approximated by solutions of Coupled Mode Equations (CMEs). Here we study this approximation for the case of the 2D Periodic Nonlinear Schr\"{o}dinger /…

斑图形成与孤子 · 物理学 2015-05-13 Tomáš Dohnal , Hannes Uecker

In this paper, we prove that a particular nondegenerate, nonlinear, autonomous parabolic partial differential equation with a nonlocal mass transfer admits the local existence of classical solutions. The equation was developed to…

偏微分方程分析 · 数学 2024-05-07 Michael R. Lindstrom

We consider a parabolic PDE with Dirichlet boundary condition and monotone operator $A$ with non-standard growth controlled by an $N$-function depending on time and spatial variable. We do not assume continuity in time for the $N$-function.…

偏微分方程分析 · 数学 2021-05-25 Miroslav Bulíček , Piotr Gwiazda , Jakub Skrzeczkowski

In this paper, we are concerned with the global well-posedness and time-asymptotic decay of the Vlasov-Fokker-Planck equation with local alignment forces. The equation can be formally derived from an agent-based model for self-organized…

偏微分方程分析 · 数学 2016-06-22 Young-Pil Choi

The modulational stability of the nonlinear Schr{\"o}dinger (NLS) equation is examined in the case with a quadratic external potential. This study is motivated by recent experimental studies in the context of matter waves in Bose-Einstein…

软凝聚态物质 · 物理学 2009-11-10 G. Theocharis , Z. Rapti , P. G. Kevrekidis , D. J. Frantzeskakis , V. V. Konotop

This introduction surveys a renormalisation group perspective on log-Sobolev inequalities and related properties of stochastic dynamics. We also explain the relationship of this approach to related recent and less recent developments such…

概率论 · 数学 2025-04-25 Roland Bauerschmidt , Thierry Bodineau , Benoit Dagallier

The classical dynamics of particles with (non-)abelian charges and spin moving on curved manifolds is established in the Poisson-Hamilton framework. Equations of motion are derived for the minimal quadratic Hamiltonian and some extensions…

高能物理 - 理论 · 物理学 2025-04-15 Jan W. van Holten

In this work, we study the dynamics of rogue waves in the partially $\cal{PT}$-symmetric nonlocal Davey-Stewartson(DS) systems. Using the Darboux transformation method, general rogue waves in the partially $\cal{PT}$-symmetric nonlocal DS…

数学物理 · 物理学 2017-10-20 Bo Yang , Yong Chen

We study normalised solutions of the stationary Gross-Pitaevskii-Poisson (GPP) equation with a defocusing local nonlinear term, $$-\Delta u+\lambda u+|u|^2u =(I_\alpha*|u|^2)u\quad\text{in $\mathbb R^3$},\qquad\int_{\mathbb…

偏微分方程分析 · 数学 2023-09-06 Riccardo Molle , Vitaly Moroz , Giuseppe Riey

We consider local weak solutions to the widely degenerate parabolic PDE \[ \partial_{t}u-\mathrm{div}\left((\vert Du\vert-\lambda)_{+}^{p-1}\frac{Du}{\vert Du\vert}\right)=f\qquad\mathrm{in}\ \ \Omega_{T}=\Omega\times(0,T), \] where…

偏微分方程分析 · 数学 2025-06-01 Pasquale Ambrosio

In this paper we will consider the peridynamic equation of motion which is described by a second order in time partial integro-differential equation. This equation has recently received great attention in several fields of Engineering…

We study the symmetric stochastic $p$-Stokes system, $p \in (1,\infty)$, in a bounded domain. The results are two-folded. First, we show that in the context of analytically weak solutions the stochastic pressure -- related to non-divergence…

偏微分方程分析 · 数学 2023-05-19 Jörn Wichmann

Cosmological Gravitational Waves (GWs) are usually associated with the transverse-traceless part of the metric perturbations in the context of the theory of cosmological perturbations. These modes are just the usual polarizations `+' and…

广义相对论与量子宇宙学 · 物理学 2014-11-20 Marcio E. S. Alves , Oswaldo D. Miranda , Jose C. N. de Araujo

We extend one component Gross-Pitaevskii equation to two component coupled case with the damping term, linear and parabolic density profiles, then give the Lax pair and infinitely-many conservations laws of this coupled system. The system…

可精确求解与可积系统 · 物理学 2017-10-25 Tao Xu , Yong Chen

We review some recent results on the long time dynamics of solutions to the Gross-Pitaevskii equation governing non-trapped dipolar Quantum Gases. We describe the asymptotic behaviours of solutions for different initial configurations of…

偏微分方程分析 · 数学 2021-10-12 Jacopo Bellazzini , Luigi Forcella

We make use of the Guo-Krasnoselskii fixed point theorem on cones to prove existence of positive solutions to a non local p-Laplacian boundary value problem on time scales arising in many applications.

偏微分方程分析 · 数学 2007-10-14 Moulay Rchid Sidi Ammi , Delfim F. M. Torres

The stochastic Gross-Pitaevskii equation and modified Popov theory are shown to provide an ab initio description of finite temperature, weakly-interacting two-dimensional Bose gas experiments. Using modified Popov theory, a systematic…

量子气体 · 物理学 2013-05-30 S. P. Cockburn , N. P. Proukakis

In this paper, the local wellposedness of a general Gross-Pitaevskii equation with rough potential is proven in dimension 2. The class of rough potentials we are considering is large enough to contain the spatial white noise and thus a…

偏微分方程分析 · 数学 2025-11-24 Samaël Mackowiak

We derive classes of exact solitonic solutions of the time-dependent Gross-Pitaevskii equation with repulsive and attractive interatomic interactions. The solutions correspond to a string of bright solitons with phase difference between…

其他凝聚态物理 · 物理学 2007-06-20 U. Al Khawaja

The Generalized Riemann Problems (GRP) for nonlinear hyperbolic systems of balance laws in one space dimension are now well-known and can be formulated as follows: Given initial-data which are smooth on two sides of a discontinuity,…

数值分析 · 数学 2013-03-13 Jianzhen Qian , Jiequan Li , Shuanghu Wang
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