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arXiv 0910.3797math.AP
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非线性薛定谔方程的哈密顿结构及其基态的渐近稳定性

The Hamiltonian structure of the nonlinear Schrödinger equation and the asymptotic stability of its ground states

Scipio Cuccagna

摘要:

本文证明了满足M.Weinstein的轨道稳定性的充分条件的NLS基态,对于看似一般的方程也是渐近稳定的。在这里,我们假设NLS具有平滑的短程非线性。我们还假设存在一个非常短的范围和光滑的线性潜力,以避免平移不变性。其基本思想是执行一个伯克霍夫正规形式参数的哈密顿量,在一份文件中由Bambusi和Cuccagna的稳定性0解决方案的NLKG。但在我们的例子中,由线性化产生的自然坐标不是正则的。因此,我们还需要应用达布定理。但要小心,以免破坏初始哈密顿量的一些好特性。

英文摘要:

In this paper we prove that ground states of the NLS which satisfy the sufficient conditions for orbital stability of M.Weinstein, are also asymptotically stable, for seemingly generic equations. Here we assume that the NLS has a smooth short range nonlinearity. We assume also the presence of a very short range and smooth linear potential, to avoid translation invariance. The basic idea is to perform a Birkhoff normal form argument on the hamiltonian, as in a paper by Bambusi and Cuccagna on the stability of the 0 solution for NLKG. But in our case, the natural coordinates arising from the linearization are not canonical. So we need also to apply the Darboux Theorem. With some care though, in order not to destroy some nice features of the initial hamiltonian.

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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