We consider the problem of proving L^ p L p bounds for eigenfunctions of the Laplacian in the high frequency limit in the presence of nonpositive curvature and more generally …
CD Sogge - Journées équations aux dérivées partielles, 2015 - numdam.org
We survey recent results related to the concentration of eigenfunctions. We also prove some new results concerning ball-concentration, as well as showing that eigenfunctions saturating …
F Wu, L Cao - Science China Mathematics, 2007 - infona.pl
Let D be a bounded domain in an n-dimensional Euclidean space ℝ n. Assume that $ $0<\lambda _1\leqslant\lambda _2\leqslant\cdots\leqslant\lambda _k\leqslant\cdots $$ are …
A Logunov - Annals of Mathematics, 2018 - projecteuclid.org
Let M be a compact C^∞-smooth Riemannian manifold of dimension n, n≥3, and let \varphi_λ=\Delta_M\varphi_λ+λ\varphi_λ=0 denote the Laplace eigenfunction on M …
We obtain L p eigenfunction bounds for the harmonic oscillator H=-Δ+x^2 H=-Δ+ x 2 in R^n ℝ n and for other related operators, improving earlier results of Thangavelu and of …
H Hezari, G Rivière - Advances in Mathematics, 2016 - Elsevier
For small range of p> 2, we improve the L p bounds of eigenfunctions of the Laplacian on negatively curved manifolds. Our improvement is by a power of logarithm for a full density …
H Hezari - Communications in Mathematical Physics, 2018 - Springer
We prove an analogue of Sogge's local L p estimates for L p norms of restrictions of eigenfunctions to submanifolds, and use it to show that for quantum ergodic eigenfunctions …
Let Δ M be the Laplace operator on a compact n-dimensional Riemannian manifold without boundary. We study the zero sets of its eigenfunctions u: Δ M u+ λu= 0. In dimension n= 2 we …
J Galkowski - Annales de l'Institut Fourier, 2019 - numdam.org
We characterize the defect measures of sequences of Laplace eigenfunctions with maximal L∞ growth. As a consequence, we obtain new proofs of results on the geometry of manifolds …