English

Conditions for discreteness of the spectrum to multi-dimensional Schr\"odinger operator

Spectral Theory 2019-06-07 v1

Abstract

This work is a continuation of our previos paper \cite{Zel1}, where for the the Schr\"odinger operator H=Δ+V(\e)H=-\Delta+ V(\e)\cdot (V(\e)0)(V(\e)\ge 0), acting in the space L2(Rd)(d3)L_2(\R^d)\,(d\ge 3), some constructive sufficient conditions for discreteness of its spectrum have been obtained on the base of well known Mazya -Shubin criterion and an optimization problem for a set function. Using a {\it capacitary strong type inequality} of David Adams, the concept of {\it base polyhedron} for the harmonic capacity and some properties of Choquet integral by this capacity, we obtain more general sufficient conditions for discreteness of the spectrum of HH in terms of a repeated nonincreasing rearrangement of the function Y(\e,\bt)=V(\e)1\e\btd2V(\bt)Y(\e,\bt)=\sqrt{V(\e)}\frac{1}{|\e-\bt|^{d-2}}\sqrt{V(\bt)} on cubes that are going to infinity.

Keywords

Cite

@article{arxiv.1906.02186,
  title  = {Conditions for discreteness of the spectrum to multi-dimensional Schr\"odinger operator},
  author = {Leonid Zelenko},
  journal= {arXiv preprint arXiv:1906.02186},
  year   = {2019}
}

Comments

31 pages. arXiv admin note: substantial text overlap with arXiv:1812.00416