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Title: Embedded eigenvalues and Neumann-Wigner potentials for relativistic Schroedinger operators
Authors: Lorinczi, Jozsef
Sasaki, Itaru
Keywords: Relativistic Schrodinger operator
Non-local operator
Neumann-Wigner potentials
Embedded eigenvalues
Resonances
Issue Date: 2017
Publisher: © Elsevier
Citation: LORINCZI, J. and SASAKI, I., 2017. Embedded eigenvalues and Neumann-Wigner potentials for relativistic Schroedinger operators. Journal of Functional Analysis, 273 (4), pp. 1548-1575.
Abstract: The existence of potentials for relativistic Schrodinger operators allowing eigenvalues em bedded in the essential spectrum is a long-standing open problem. We construct Neumann-Wigner type potentials for the massive relativistic Schrodinger operator in one and three dimensions for which an embedded eigenvalue exists. We show that in the non-relativistic limit these potentials converge to the classical Neumann-Wigner and Moses-Tuan potentials, respectively. For the massless operator in one dimension we construct two families of potentials, different by the parities of the (generalized) eigenfunctions, for which an eigenvalue equal to zero or a zero-resonance exists, dependent on the rate of decay of the corresponding eigenfunctions. We obtain explicit formulae and observe unusual decay behaviours due to the non-locality of the operator.
Description: This paper is in closed access until 3rd April 2018.
Version: Accepted for publication
DOI: 10.1016/j.jfa.2017.03.012
URI: https://dspace.lboro.ac.uk/2134/24699
Publisher Link: http://dx.doi.org/10.1016/j.jfa.2017.03.012
ISSN: 0022-1236
Appears in Collections:Closed Access (Maths)

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