Moving Compacton-like Kink in a Purely Anharmonic Lattice with
Symmetric On-Site Potential
XIA Qing-Lin1, JIANG Dong-Chu2
1School of Physics Science and Technology, Central South University, Changsha 410083
2Departmemt of Physics and Electronic Science, Hunan City University, Yiyang 413049
Moving Compacton-like Kink in a Purely Anharmonic Lattice with
Symmetric On-Site Potential
XIA Qing-Lin1;JIANG Dong-Chu2
1School of Physics Science and Technology, Central South University, Changsha 410083
2Departmemt of Physics and Electronic Science, Hunan City University, Yiyang 413049
Abstract： We study the moving compacton-like kink in the system of a purely anharmonic lattice with symmetric on-site potential by a direct algebraic method. It is found that the localization of the compactons is related to the nonlinear coupling parameter Cnl and the potential barrier height V0 of the double well potential, and the velocity of the propagation of the compacton is determined by the localization parameter q and the potential barrier height V0. Numerical calculation results demonstrate that the compacton is stable when it moves along the lattice chain.
2003, Vol. 20 
