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arxiv: 0909.5115 · v1 · pith:NTOYKKG5new · submitted 2009-09-28 · 🧮 math-ph · math.MP

On quantum waveguide with shrinking potential

classification 🧮 math-ph math.MP
keywords eigenvaluespotentialshrinkingspectrumasymptoticconditionsconsiderconstruct
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We consider the spectrum of a Schroedinger operator in a multi-dimensional cylinder perturbed by a shrinking potential. We study the phenomenon of a new eigenvalue emerging from the threshold of the essential spectrum and give the sufficient conditions for such eigenvalues to emerge. If such eigenvalues exist, we construct their asymptotic expansions.

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