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arXiv 0709.0478math.APmath-phmath.MP
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缓变势孤子相互作用

Soliton interaction with slowly varying potentials

Justin Holmer, Maciej Zworski

摘要:

研究了具有缓变光滑势$V(x) = W(hx)$的Gross-Pitaevskii方程.我们表明,时间$\log(1/h)/h $和$H^1$中的$h^2$大小的错误,解决方案是一个孤立子演化根据一个自然的有效哈密顿量,$ (ξ^2 + \sech^2 * V (x))/2 $的经典动力学。这提供了一个改进($ h \to h^2 $)相比,以前的作品,并惊人地证实了数值模拟。

英文摘要:

We study the Gross-Pitaevskii equation with a slowly varying smooth potential, $V(x) = W(hx)$. We show that up to time $\log(1/h)/h $ and errors of size $h^2$ in $H^1$, the solution is a soliton evolving according to the classical dynamics of a natural effective Hamiltonian, $ (ξ^2 + \sech^2 * V (x))/2 $. This provides an improvement ($ h \to h^2 $) compared to previous works, and is strikingly confirmed by numerical simulations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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