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Almost exponential decay of quantum resonance states and paley-wiener type estimates in gevrey spaces

机译:格雷空间中量子共振态的几乎指数衰减和灰色维纳类型估计

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摘要

Let H_0 be a self-adjoint operator in some Hilbert space H and let λ_0 be a (possibly degenerate) eigenvalue of H_0 embedded in its essential spectrum σ_(ess)(H_0) with corresponding eigenprojection Π_0. For small {pipe}κ{pipe}, let H(κ) be a family of perturbed Hamiltonians, which is analytic in a generalized Balslev-Combes sense. Following Hunziker's approach in (Commun Math Phys 132:177-188, 1990), we discuss the corrections to exponential decay in where D(κ) = Π_0 + O(κ~2) (κ → 0) and h(κ) is some family of in general non self-adjoint bounded operators with Ranh(κ) = RanΠ_0, leaving RanΠ_0 invariant, and 0 ≤ g ≤ 1 is a cut-off function with g(λ_0) = 1 and sufficiently small support. Our main result is a sharp estimate of the remainder R(κ, t) in terms of the Gevrey index.
机译:令H_0为某个希尔伯特空间H中的自伴算子,令λ_0为嵌入其基本谱σ_(ess)(H_0)中的H_0的本征值(可能简并),并具有对应的本征投影Π_0。对于小{pipe}κ{pipe},让H(κ)是一个受干扰的哈密顿量族,这是从广义的Balslev-Combes意义上进行分析的。遵循Hunziker在(Commun Math Phys 132:177-188,1990)中的方法,我们讨论了D(κ)=Π_0+ O(κ〜2)(κ→0)和h(κ)为Ranh(κ)=RanΠ_0,使RanΠ_0不变,且0≤g≤1的一般非自伴有界算子的某些族是g(λ_0)= 1且具有足够小的支持的截断函数。我们的主要结果是根据Gevrey指数对其余R(κ,t)进行了精确估计。

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