Eigenfunctions in analysis, geometry and PDE

分析、几何和偏微分方程中的特征函数

• 批准号: 227061-2009
• 负责人: Jakobson, Dmitry
• 金额: $ 2.77万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2010
• 资助国家: 加拿大
• 起止时间: 2010-01-01 至 2011-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=454449
• 关键词: Eigenfunctions; analysis; geometry; PDE

I work on questions in spectral theory that have their origins in mathematical physics (spectra and eigenfunctions of Laplace-type and Dirac-type operators). I often study questions in the high-energy regime such as spectral statistics, as well as asymptotic properties of of high energy eigenstates: uniform distribution, $L^p$ norms, nodal and critical sets, semiclassical asymptotics. These questions lie at the intersection of analysis, partial differential equations, differential geometry, dynamical systems and mathematical physics. One of my main interests is the area of quantum chaos. The subject originated with the use of random matrix theory to model the spectra of atomic nuclei. Later it was recognized that similar phenomena occur in many other areas of mathematics and physics. I propose to continue my study of relationship between ergodic theory of partially hyperbolic dynamical systems, and high energy behavior of eigenfunctions of matrix-valued operators, such as Hodge Laplacian and Dirac operators. I also intend to study high energy spectra and eigenfunctions for systems where wave propagation involves branching (or ray-splitting); such systems arise, for example, in elasticity and acoustics. Many natural questions in semiclassical analysis of such systems remain unexplored, and require establishing new results in ergodic theory.

我工作的问题，在频谱理论有其起源在数学物理（频谱和本征函数的拉普拉斯型和狄拉克型运营商）。我经常研究的问题，在高能量制度，如光谱统计，以及渐近性质的高能量本征态：均匀分布，$L^p$范数，节点和临界集，半经典渐近。这些问题位于分析，偏微分方程，微分几何，动力系统和数学物理的交叉点。我的主要兴趣之一是量子混沌领域。这个主题起源于使用随机矩阵理论来模拟原子核的光谱。后来人们认识到，类似的现象发生在许多其他领域的数学和物理学。我打算继续研究部分双曲动力系统的遍历理论与矩阵值算子（如Hodge Laplacian算子和Dirac算子）的本征函数的高能行为之间的关系。我还打算研究波传播涉及分支（或射线分裂）的系统的高能谱和本征函数;例如，这种系统出现在弹性和声学中。这类系统的半经典分析中的许多自然问题尚未探索，需要在遍历理论中建立新的结果。