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arxiv: math-ph/0607042 · v1 · submitted 2006-07-20 · 🧮 math-ph · math.FA· math.MP

Levinson's theorem for Schroedinger operators with point interaction: a topological approach

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keywords operatorsinteractionlevinsonpointschroedingerapproachassociatedconcept
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In this note Levinson theorems for Schroedinger operators in R^n with one point interaction at 0 are derived using the concept of winding numbers. These results are based on new expressions for the associated wave operators.

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