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

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

2006-07-20

arxiv.org/abs/math-ph/0607042v1

Physics

Mathematical Physics

7 pages

Scientific paper

10.1088/0305-4470/39/46/011

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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