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arXiv 1610.03359math.APmath-phmath.MP
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不定常Schr{<$}dinger方程:整体适定性和Sobolev范数的增长性

On time dependent Schr{ö}dinger equations: global well-posedness and growth of Sobolev norms

Alberto Maspero, Didier Robert

摘要:

本文考虑了具有如下形式的不定常Schr{<$}dinger线性偏微分方程:i $\partial$ t $ψ$ = L(t)$ψ$,其中L(t)是连续的自伴算子族.我们给出了抽象Sobolev空间中演化的适定性和多项式增长的条件。若L(t)= H + V(t),其中V(t)是时间上的扰动光滑算子,H是一个自伴正算子,其谱可以被包含在距离不断增加的谱簇中,我们证明了解的Sobolev范数至多增长为tPDMATHABMO,当tPDMATHABMP $\infty$,对任何$ε$ \textgreater{} 0.如果V(t)在时间上是解析的,我们改进了(log t)$γ$的界,对于某些$γ$ \textgreater{} 0。证明遵循的战略,由于豪兰,乔伊和Nenciu,绝热近似的流动。我们恢复了大部分已知的结果,并对R上的单自由度Schr{<$}dinger算子和Zoll流形上的Schr{<$} dinger算子等几种模型得到了新的估计.

英文摘要:

In this paper we consider time dependent Schr{ö}dinger linear PDEs of the form i$\partial$t$ψ$ = L(t)$ψ$, where L(t) is a continuous family of self-adjoint operators. We give conditions for well-posedness and polynomial growth for the evolution in abstract Sobolev spaces. If L(t) = H + V (t) where V (t) is a perturbation smooth in time and H is a self-adjoint positive operator whose spectrum can be enclosed in spectral clusters whose distance is increasing, we prove that the Sobolev norms of the solution grow at most as t $ε$ when t $\rightarrow$ $\infty$, for any $ε$ \textgreater{} 0. If V (t) is analytic in time we improve the bound to (log t) $γ$ , for some $γ$ \textgreater{} 0. The proof follows the strategy, due to Howland, Joye and Nenciu, of the adiabatic approximation of the flow. We recover most of known results and obtain new estimates for several models including 1-degree of freedom Schr{ö}dinger operators on R and Schr{ö}dinger operators on Zoll manifolds.

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