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原文連結
論文資訊
- 類型：已發表論文
- 日期：2016-01-05
摘要
We consider the 非線性 Dirac (NLD) equation in (1 + 1) dimensions with scalar-scalar self interaction g(2)/k+1 ((psi) over bar psi(k+1) in the presence of external forces as well as damping of the form f (x) - i mu gamma(0)psi, where both f and psi are two-component spinors. We develop an approximate variational approach using collective coordinates (CC) for studying the time dependent response of the solitary waves to these external forces. This approach predicts intrinsic oscillations of the solitary waves, i. e. the amplitude, width and phase all oscillate with the same frequency. The translational motion is also affected, because the soliton position oscillates around a mean trajectory. For k = 1 we solve explicitly the CC equations of the variational approximation for slow moving solitar
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