Numerical Illustration of π-Kinks as Fundamental Nonlinear Modes in Sine-Lattice Equation : General and Mathematical Physics
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概要
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We study the dynamics of the sine-lattice equation defined by u_n-sin(u_<n+1> -u_n)+sin(u_n-u_<n-1>)=0, in which there exist π-kinks as well as 2π-kinks. Numerical simulations show that a static 2π-kink (antikink), initially put on a system, splits into two π-kinks (antikinks), moving opposite directions with each other. It is also observed that with an appropriate initial impulse a pair of π-kink and anti π-kink is created from the ground state. These facts suggest that π-kink [π-K] and anti π-kink [π-K^^-] are fundamental nonlinear modes in the system described by the equation given above.
- 理論物理学刊行会の論文
- 1987-05-25
著者
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Homma Shigeo
Department Of Applied Physics Faculty Of Engineering Nagoya University
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HOMMA Shigeo
Department of Applied Physics, Nagoya University
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