Separation Transformation and New Exact Solutions of the (N + 1)-dimensional Dispersive Double sine-Gordon Equation

Separation Transformation and New Exact Solutions of the (N + 1)-dimensional Dispersive Double sine-Gordon Equation
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(N 1)维色散双正弦-戈登方程的分离变换与新精确解

DOI:
10.1088/0253-6102/58/3/13
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发表时间:
2012-09
期刊:
理论物理通讯
影响因子:
--
通讯作者:
张忠飞
张忠飞
中科院分区:
其他
文献类型:
--
作者:
田野;陈静;张忠飞

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本文将分离变换方法推广到3He超流体B相自旋动力学等许多物理系统中出现的(N + 1)维色散双正弦戈登方程。该方程首先被简化为一组偏微分方程和一个非线性常微分方程。然后得到了偏微分方程组的通解,并用f展开法求解了非线性常微分方程。最后,通过分离变换显式构造了(N + 1)维色散双正弦-戈登方程的许多新的精确解。对于N >2,精确解中存在任意函数,这可能揭示出高维色散双正弦-戈登方程中更多新颖的非线性结构。
In this paper, the separation transformation approach is extended to the (N + 1)-dimensional dispersive double sine-Gordon equation arising in many physical systems such as the spin dynamics in the B phase of 3He superfluid. This equation is first reduced to a set of partial differential equations and a nonlinear ordinary differential equation. Then the general solutions of the set of partial differential equations are obtained and the nonlinear ordinary differential equation is solved by F-expansion method. Finally, many new exact solutions of the (N + 1)-dimensional dispersive double sine-Gordon equation are constructed explicitly via the separation transformation. For the case of N > 2, there is an arbitrary function in the exact solutions, which may reveal more novel nonlinear structures in the high-dimensional dispersive double sine-Gordon equation.
DOI: 10.1103/physrevb.40.2284
发表时间: 1989-08
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