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PT-Symmetric Waveguides and the Lack of Variational Techniques
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SYSNO ASEP 0384795 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title PT-Symmetric Waveguides and the Lack of Variational Techniques Author(s) Krejčiřík, David (UJF-V) RID Number of authors 1 Source Title Integral Equations and Operator Theory - ISSN 0378-620X
Roč. 73, č. 1 (2012), s. 1-2Number of pages 2 s. Language eng - English Country CH - Switzerland Keywords Robin Laplacian ; non-self-adjoint boundary conditions ; complex symmetric operator ; PT-symmetry ; waveguides ; discrete and essential spectra Subject RIV BA - General Mathematics Institutional support UJF-V - RVO:61389005 UT WOS 000303468200001 DOI 10.1007/s00020-011-1926-8 Annotation On a model of waveguide with non-Hermitian Robin-type boundary conditions, we demonstrate the need for a robust method establishing the existence of isolated eigenvalues for non-self-adjoint operators possessing both essential and discrete spectrum. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2013
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