H. Christianson

activity

20132024

collaborators

4 papers

math.AP2024

Non-concentration estimates for Laplace eigenfunctions on compact $C^{\infty}$ manifolds with boundary

Hans Christianson, John A. Toth

Let $Ω$ be an $n$ -dimensional compact Riemannian manifold $(n \geq 3)$ with $C^{\infty}$ boundary, and consider $L^{2}$ -normalized eigenfunctions $- Δ ϕ_{λ} = λ^{2} ϕ_{λ}$ with Dirichlet or…

math.AP2024

Quantum Flux and Quantum Ergodicity for Cross Sections

Hans Christianson, John Toth

For sequences of quantum ergodic eigenfunctions, we define the quantum flux norm associated to a codimension $1$ submanifold $Σ$ of a non-degenerate energy surface. We prove restri…

math.AP2023

Small-scale mass estimates for Neumann eigenfunctions: piecewise smooth planar domains

Hans Christianson, John A. Toth

Let $Ω$ be a piecewise-smooth, bounded convex domain in $R^{2}$ and consider $L^{2}$ -normalized Neumann eigenfunctions $ϕ_{λ}$ with eigenvalue $λ^{2}$ . Our main result is a small-scale {\…

math.AP2013

Exterior mass estimates and $L^{2}$ restriction bounds for Neumann data along hypersurfaces

Hans Christianson, Andrew Hassell, John A. Toth

We study the problem of estimating the $L^{2}$ norm of Laplace eigenfunctions on a compact Riemannian manifold $M$ when restricted to a hypersurface $H$ . We prove mass estimates for…

Non-concentration estimates for Laplace eigenfunctions on compact C∞ manifolds with boundary

Quantum Flux and Quantum Ergodicity for Cross Sections

Small-scale mass estimates for Neumann eigenfunctions: piecewise smooth planar domains

Exterior mass estimates and L2 restriction bounds for Neumann data along hypersurfaces

Non-concentration estimates for Laplace eigenfunctions on compact $C^{\infty}$ manifolds with boundary

Exterior mass estimates and $L^{2}$ restriction bounds for Neumann data along hypersurfaces