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arXiv · 1702.05111

A note on the Exact Green function for a quantum system decorated by two or more impurities

M. L. Glasser
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Abstract

The exact Green function is constructed for a quantum system, with known Green function, which is decorated by two delta function impurities.It is shown that when two such impurities coincide they behave as a single singular potential with combined amplitude. The results are extended to N impurities.

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M. L. Glasser. 2017-02-16. A note on the Exact Green function for a quantum system decorated by two or more impurities. https://arxiv.org/abs/1702.05111

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