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We prove existence of small-amplitude modulated solitary waves for the full-dispersion Kadomtsev--Petviashvilii (FDKP) equation with weak surface tension. The resulting waves are small-order perturbations of scaled, translated and…

偏微分方程分析 · 数学 2021-10-11 Mats Ehrnström , Mark D. Groves , Dag Nilsson

Algebro-geometric solutions of the lattice potential modified Kadomtsev-Petviashvili (lpmKP) equation are constructed. A Darboux transformation of the Kaup--Newell spectral problem is employed to generate a Lax triad for the lpmKP equation,…

可精确求解与可积系统 · 物理学 2022-08-24 Xiaoxue Xu , Cewen Cao , Da-jun Zhang

We construct quasiparticles-like solutions to the one-dimensional Fisher-Kolmogorov-Petrovskii-Piskunov (FKPP) with a nonlocal nonlinearity using the method of semiclassically concentrated states in the weak diffusion approximation. Such…

数学物理 · 物理学 2024-03-07 A. E. Kulagin , A. V. Shapovalov

This article is a brief review of the results of studying the collapse of sound waves in media with positive dispersion, which is described in terms of the three-dimensional Kadomtsev-Petviashvili (KP) equation. The KP instability of…

斑图形成与孤子 · 物理学 2022-09-07 E. A. Kuznetsov

In classical shallow water wave (SWW) theory, there exist two integrable one-dimensional SWW equation [Hirota-Satsuma (HS) type and Ablowitz-Kaup-Newell-Segur (AKNS) type] in the Boussinesq approximation. In this paper, we mainly focus on…

可精确求解与可积系统 · 物理学 2017-03-29 Junchao Chen , Zhengyi Ma , Yahong Hu

Based on the direct linearisation framework of the discrete Kadomtsev-Petviashvili-type equations presented in [Proc. R. Soc. A, 473 (2017) 20160915], six novel nonautonomous differential-difference equations are established, including…

可精确求解与可积系统 · 物理学 2020-12-22 Wei Fu , Frank W. Nijhoff

In this paper some existence results for the minimal P-symmetric periodic solutions are proved for first order autonomous Hamiltonian systems when the Hamiltonian function is superquadratic, asymptotically linear and subquadratic. These are…

偏微分方程分析 · 数学 2016-06-15 Shanshan Tang

Elliptic soliton solutions, i.e., a hierarchy of functions based on an elliptic seed solution, are constructed using an elliptic Cauchy kernel, for integrable lattice equations of Kadomtsev-Petviashvili (KP) type. This comprises the lattice…

可精确求解与可积系统 · 物理学 2015-06-03 Sikarin Yoo-Kong , Frank Nijhoff

Shallow water wave phenomena find their analogue in optics through a nonlocal nonlinear Schr\"odinger (NLS) model in $(2+1)$-dimensions. We identify an analogue of surface tension in optics, namely a single parameter depending on the degree…

斑图形成与孤子 · 物理学 2017-08-02 Theodoros P. Horikis , Dimitrios J. Frantzeskakis

We informally review a few PDEs for which the Monge-Kantorovich distance between pairs of solutions, possibly with some judicious cost function, decays: heat equation, Fokker-Planck equation, heat equation with varying coefficients,…

偏微分方程分析 · 数学 2025-08-27 Nicolas Fournier , Benoît Perthame

In this work, we propose a new approach called ``stationary reduction method based on nonisospectral deformation of orthogonal polynomials" for deriving discrete Painlev\'{e}-type (d-P-type) equations. We apply this approach to…

可精确求解与可积系统 · 物理学 2025-09-18 Xiao-Lu Yue , Xiang-Ke Chang , Xing-Biao Hu

We study the generalization of the dispersionless Kadomtsev - Petviashvili (dKP) equation in n+1 dimensions and with nonlinearity of degree m+1, a model equation describing the propagation of weakly nonlinear, quasi one dimensional waves in…

可精确求解与可积系统 · 物理学 2016-10-12 F. Santucci , P. M. Santini

Of concern are traveling wave solutions for the fractional Kadomtsev--Petviashvili (fKP) equation. The existence of periodically modulated solitary wave solutions is proved by dimension breaking bifurcation. Moreover, the line solitary wave…

偏微分方程分析 · 数学 2022-03-25 Handan Borluk , Gabriele Bruell , Dag Nilsson

Under investigation is a generalized (3 + 1)-dimensional B-type Kadomtsev-Petviashvili equation with variable coefficients in fluid dynamics. Based on the Hirota's bilinear form and the positive quadratic function, abundant lump solutions…

可精确求解与可积系统 · 物理学 2021-03-31 Wen-Hui Zhu , Jian-Guo Liu

The N=1 supersymmetric modified Korteweg-de Vries (SmKdV) system is transformed to a system of coupled bosonic equations with the bosonization approach. The bosonized SmKdV (BSmKdV) passes the Painlev\'{e} test and allows a set of…

可精确求解与可积系统 · 物理学 2015-08-25 Bo Ren , Jian-Rong Yang , Ping Liu , Xi-Zhong Liu

As in the case of soliton PDEs in 2+1 dimensions, the evolutionary form of integrable dispersionless multidimensional PDEs is non-local, and the proper choice of integration constants should be the one dictated by the associated Inverse…

可精确求解与可积系统 · 物理学 2018-05-01 P. G. Grinevich , P. M. Santini

We show that a type of linear superposition principle works for several nonlinear differential equations. Using this approach, we find periodic solutions of the Kadomtsev-Petviashvili (KP) equation, the nonlinear Schrodinger (NLS) equation,…

可精确求解与可积系统 · 物理学 2009-11-07 Fred Cooper , Avinash Khare , Uday Sukhatme

Matrix solutions of a noncommutative KP and a noncommutative mKP equation which can be expressed as quasideterminants are discussed. In particular, we investigate interaction properties of two-soliton solutions.

可精确求解与可积系统 · 物理学 2015-05-13 C. R. Gilson , J. J. C. Nimmo , C. M. Sooman

We show that we can also apply the Hirota method to some non-integrable equations. For this purpose, we consider the extensions of the Kadomtsev-Petviashvili (KP) and the Boussinesq (Bo) equations. We present several solutions of these…

可精确求解与可积系统 · 物理学 2007-05-23 Aslı Pekcan

Consider the interaction of biharmonic waves with a periodic array of cavities, characterized by the Kirchhoff--Love model. This paper investigates the perfectly matched layer (PML) formulation and its numerical soution to the governing…

数值分析 · 数学 2024-04-23 Peijun Li , Xiaokai Yuan