摘要
Perturbations about kink solution ofФ-4 equation are investigated by a direct approach which was recently developed in a study of soliton perturbation theory.In this scheme,the derivative expansion method from classical perturbation theory is employed to linearize the perturbed equation.The solution of the linearized equation for first-order correction is derived by the method of Laplace transformation.At the same time,the parameters variation is obtained directly from the secularity conditions.
作者
TANG Yi
YAN Jia-ren
CHEN Zhen-hua
唐翌;颜家壬;陈振华(Department of Physics,Inner Mongolia University,Huhehaote 010021 Department of Physics,Hu’nan Normal University,Changsha 410081;Department of Physics,Hu’nan Normal University,Changsha 410081;Institute of Nonequilibrium Materials,Center-South University of Technology,Changsha 410083)
