Wave propagation through a 2D lattice

被引:11
|
作者
Sreelatha, KS [1 ]
Joseph, KB [1 ]
机构
[1] Cochin Univ Sci & Technol, Dept Phys, Cochin 682022, Kerala, India
关键词
Computational geometry - Integration - Nonlinear equations - Perturbation techniques - Solitons;
D O I
10.1016/S0960-0779(98)00175-1
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
Nonlinear wave propagation through a 2D lattice is investigated. Using reductive perturbation method, we show that this can be described by Kadomtsev-Petviashvili (KP) equation for quadratic nonlinearity and modified KP equation for cubic nonlinearity, respectively. With quadratic and cubic nonlinearities together, the system is governed by an integro-differential equation. We have also checked the integrability of these equations using singularity analysis and obtained solitary wave solutions. (C) 2000 Elsevier Science Ltd. All rights reserved.
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页码:711 / 719
页数:9
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