Numerical Simulation of Kink Dynamics in Sine-Lattice Discrete Double Sine-Gordon Equation : General and Mathematical Physcis
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概要
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We study kink dynamics in sine-lattice (sine-form) discrete double sine-Gordon equation defined as u_n-sin(u_<n+1>-u_n)+sin(u_n-u_<n-1>)=g(-sinu_n+ηsin2u_n) where the kink width l_o=g^<-1/2> is chosen as g=0.1. Numerical simulation to the above equation shows that (I) there exist on-kink states in which initial shape and kink velocity are preserved during long period of time for -2≤η≤1.5 with initial velocity ν=0.1, (II) the kinks preserve their identities after their collision with scanty ripple for parameter range -0.16<η<0.08, and (III) breather-like modes appear for certain values of η.
- 理論物理学刊行会の論文
- 1986-07-25
著者
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小山 照夫
学術情報センター
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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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