Dynamics of Asymptotically Hyperbolic Manifolds

Absence of eigenvalue at the bottom of the continuous spectrum on asymptotically hyperbolic manifolds

For a class of asymptotically hyperbolic manifolds, we show that the bottom of the continuous spectrum of the Laplace-Beltrami operator is not an eigenvalue. Our approach only uses properties of the operator near infinity and, in particular, does not require any global assumptions on the topology or the curvature, unlike previous papers on the same topic.

Resolvent estimates for the Laplacian on asymptotically hyperbolic manifolds

We prove high energy estimates for the boundary values of the weighted resolvent of the Laplacian on an asymptotically hyperbolic manifold. Our point is to use weights that fit the pseudo-differential calculus associated with the asymptotically hyperbolic geometry. Our proof is a combination of a trick using Mourre theory and of results by Froese-Hislop and Cardoso-Vodev.

无需偶性假设的渐近双曲曲面上的预解估计

Resolvent estimate for asymptotically hyperbolic surfaces without evenness assumption

本文证明了一类非紧流形上拉普拉斯算子的尖锐截断预解估计，并将其应用于负曲率渐近双曲曲面，得到无需无穷远偶性假设的全局Strichartz与谱投影估计。

关于渐近双曲流形反散射问题与Conformal Laplacian Calderón问题的相互作用

On the interplay between inverse scattering for asymptotically hyperbolic manifolds and the Calderón problem for the Conformal Laplacian

本文通过渐近双曲流形与Conformal Laplacian的关系，证明了特定能量下的散射矩阵能确定边界度量的jet结构。

Asymptotically hyperbolic manifolds with polyhomogeneous metric

We analyze the resolvent and define the scattering matrix for asymptotically hyperbolic manifolds with metrics which have a polyhomogeneous expansion near the boundary, and also prove that there is always an essential singularity of the resolvent in this setting. We use this analysis to prove an inverse result for conformally compact odd dimensional Einstein manifolds.

On the spectral theory and dynamics of asymptotically hyperbolic manifolds

We present a brief survey of the spectral theory and dynamics of infinite volume asymptotically hyperbolic manifolds. Beginning with their geometry and examples, we proceed to their spectral and scattering theories, dynamics, and the physical description of their quantum and classical mechanics. We conclude with a discussion of recent results, ideas, and conjectures.

具有实解析端的偶渐近双曲流形的共振数量上界

Upper bound on the number of resonances for even asymptotically hyperbolic manifolds with real-analytic ends

本文证明了具有实解析端的偶渐近双曲流形在半径趋于无穷大的圆盘内共振数量的多项式上界，并为Schwarzschild-de Sitter时空的拟正规频率数量提供了类似上界。

渐近复双曲流形上的波核

The wave kernel on asymptotically complex hyperbolic manifolds

该研究针对渐近复双曲流形上的拉普拉斯波核，证明其属于特定傅里叶积分算子类，分析其迹的奇异性分布并得到零时刻渐近展开，推进了相关流形上的谱几何研究。

Radiation Fields, Scattering and Inverse Scattering on Asymptotically Hyperbolic Manifolds

In analogy with radiation fields for asymptotically Euclidean manifolds, introduced by F.G. Friedlander, we define radiation fields for asymptotically hyperbolic manifolds. We use them to give a translation representation of the wave group and to obtain the scattering matrix for such manifolds. Furthermore, we prove a support theorem for the radiation fields which generalizes to this setting the well known support theorem of Helgason and Lax and Phillips for the horocyclic Radon transform. This is used to show that the manifold and the metric, up to invariants, are determined by the scattering…

Meromorphic properties of the resolvent on asymptotically hyperbolic manifolds

We show that the resolvent of the Laplacian on asymptotically hyperbolic spaces extends meromorphically with finite rank poles to the complex plane if and only if the metric is `even' (in a sense). If it is not even, there exist some cases where the resolvent has an essential singularity in the non-physical sheet.

Scattering poles for asymptotically hyperbolic manifolds

For a class of manifolds that includes quotients of real hyperbolic space by a convex co-compact discrete group, we show that the resonances of the meromorphically continued resolvent kernel for the Laplacian coincide, with multiplicities, with the poles of the meromorphically continued scattering operator. In order to carry out the proof, we use Shmuel Agmon's perturbation theory of resonances to show that both resolvent resonances and scattering poles are simple for generic potential perturbations.

Fractal Weyl laws for asymptotically hyperbolic manifolds

For asymptotically hyperbolic manifolds with hyperbolic trapped sets we prove a fractal upper bound on the number of resonances near the essential spectrum, with power determined by the dimension of the trapped set. This covers the case of general convex cocompact quotients (including the case of connected trapped sets) where our result implies a bound on the number of zeros of the Selberg zeta function in disks of arbitrary size along the imaginary axis. Although no sharp fractal lower bounds are known, the case of quasifuchsian groups, included here, is most likely to provide them.

渐近双曲流形上薛定谔算子负特征值的分布

The distribution of negative eigenvalues of Schrödinger operators on asymptotically hyperbolic manifolds

本文研究渐近双曲流形上薛定谔算子负特征值的计数函数渐近性，给出势条件判定有限或无限个负特征值，并在无限情形下得到区间$(-\infty,-E)$内特征值计数当$E\to 0$时的渐近行为。

Introduction to spectral theory and inverse problem on asymptotically hyperbolic manifolds

We study the spectral theory and inverse problem on asymptotically hyperbolic manifolds. The main subjects are as follows: (1)Location of the essential spectrum. (2)Absence of eigenvalues embedded in the continuous spectrum. (3)Limiting absorption principle for the resolvent and the absolute continuity of the continuous spectrum. (4)Construction of the generalized Fourier transform. (5)symptotic completeness of time-dependent wave operators. (6)Characterization of the space of scattering solutions to the Helmhotz equation in terms of the generalized Fourier transform. (7)Asymptotic expansion o…

Inverse Scattering on Asymptotically Hyperbolic Manifolds

Scattering is defined on compact manifolds with boundary which are equipped with an asymptotically hyperbolic metric, $g.$ A model form is established for such metrics close to the boundary. It is shown that the scattering matrix at energy $ζ$ exists and is a pseudo-differential operator of order $2ζ+1 - \dim X.$ The symbol of the scattering matrix is then used to show that except for a countable set of energies the scattering matrix at one energy determines the diffeomorphism class of the metric modulo terms vanishing to infinite order at the boundary. An analogous result is proved for potent…