Levinson's theorem for Schroedinger operators with point interaction: a topological approach
classification
🧮 math-ph
math.FAmath.MP
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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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