二维非自伴算子的丢番图环面和Weyl律
Diophantine tori and Weyl laws for non-selfadjoint operators in dimension two
摘要:
研究了二维自伴半经典解析伪微分算子的非自伴扰动的特征值分布,假设未扰动部分的经典流是完全可积的.建立了一个关于谱带特征值个数的Weyl型渐近公式,该谱带由对应于丢番图不变拉格朗日环面的水平从上到下有界。外尔定律是由未扰动部分的经典流中主导的非自伴扰动的长时间平均值给出的。
英文摘要:
We study the distribution of eigenvalues for non-selfadjoint perturbations of selfadjoint semiclassical analytic pseudodifferential operators in dimension two, assuming that the classical flow of the unperturbed part is completely integrable. An asymptotic formula of Weyl type for the number of eigenvalues in a spectral band, bounded from above and from below by levels corresponding to Diophantine invariant Lagrangian tori, is established. The Weyl law is given in terms of the long time averages of the leading non-selfadjoint perturbation along the classical flow of the unperturbed part.
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