Open AccessBounds on eigenvalues of perturbed Lamé operators with complex potentials
Author(s) -
Lucrezia Cossetti
Publication year - 2021
Publication title -
mathematics in engineering
Language(s) - English
Resource type - Journals
ISSN - 2640-3501
DOI - 10.3934/mine.2022037
Subject(s) - eigenvalues and eigenvectors , complex plane , self adjoint operator , mathematics , operator (biology) , spectrum (functional analysis) , pure mathematics , pseudodifferential operators , mathematical analysis , physics , quantum mechanics , hilbert space , chemistry , biochemistry , repressor , transcription factor , gene
Several recent papers have focused their attention in proving the correct analogue to the Lieb-Thirring inequalities for non self-adjoint operators and in finding bounds on the distribution of their eigenvalues in the complex plane. This paper provides some improvement in the state of the art in this topic. Precisely, we address the question of finding quantitative bounds on the discrete spectrum of the perturbed Lamé operator of elasticity $ -\Delta^\ast + V $ in terms of $ L^p $-norms of the potential. Original results within the self-adjoint framework are provided too.