共查询到18条相似文献,搜索用时 78 毫秒
1.
2.
3.
4.
利用半经典微扰理论计算了H-H2O的非弹性碰撞中的H2O分子的转动,振动激发,并将计算结果与实验结果进行了比较。计算中采用了Schatz和Elgersma的半经验势能面,水分子的势函数,包括了谐振和非谐振力函数,在考虑了振动和转动耦合的情况焉,通过半经典微扰理论来确定水分子末态的振动量子数。 相似文献
5.
使用改进的齐次平衡方法,研究了破裂孤子方程的孤子解结构,发现它具有单孤子解,单曲线孤子解,单dromion孤子解,多dromion孤子解。 相似文献
6.
7.
8.
含高阶非线性效应的薛定谔方程的精确解研究 总被引:1,自引:0,他引:1
利用孤子理论,研究了含三次和五次非线性项的非线性薛定谔方程,在参数取不同值时得到了方程的新型亮孤子解、新型暗孤子解和新的三角函数周期解。 相似文献
9.
10.
11.
利用同伦映射方法研究了一类广义Sine-Gordon方程. 首先引入一个同伦变换. 然后构造了原方程解的迭代关系式. 最后得到了问题的解析解.
关键词:
孤子
扰动
同伦映射 相似文献
12.
13.
14.
The soliton perturbation theory is used to study the solitons that are governed by the compound Korteweg de-Vries equation
in presence of perturbation terms. The adiabatic parameter dynamics of the solitons in presence of the perturbation terms
are obtained.
AMS Codes: 35Q51; 35Q53; 37K10.
PACS Codes: 02.30.Jr; 02.30.Ik. 相似文献
15.
Anjan Biswas 《Optical and Quantum Electronics》2005,37(4):359-369
The soliton perturbation theory is used to study and analyze the stochastic perturbation of optical solitons, due to Kerr law nonlinearity, in addition to deterministic perturbations of optical solitons that is governed by the nonlinear Schrödingers equation. The Langevin equations are derived and analyzed. The deterministic perturbations that are considered here are of both Hamiltonian as well as of non-Hamiltonian type. 相似文献
16.
We extend techniques developed for the study of turbulent fluid flows to the statistical study of the dynamics of differential delay equations. Because the phase spaces of differential delay equations are infinite dimensional, phase-space densities for these systems are functionals. We derive a Hopf-like functional differential equation governing the evolution of these densities. The functional differential equation is reduced to an infinite chain of linear partial differential equations using perturbation theory. A necessary condition for a measure to be invariant under the action of a nonlinear differential delay equation is given. Finally, we show that the evolution equation for the density functional is the Fourier transform of the infinite-dimensional version of the Kramers-Moyal expansion. 相似文献
17.
A direct approach has been developed for soliton perturbations based on the Green's function. We first linearized the soliton equation, and then derived the Green's function corresponding to approximation equations of different orders. Finally, we obtained the effects of perturbation on a soliton, namely both the slow time dependence of the soliton parameters and the corrections up to the second-order approximation. The higher-order effects can also be obtained in the same way. 相似文献