Local distortion techniques and unitarity of the S-matrix for the 2-body problem |
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| Authors: | D Babbitt E Balslev |
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| Institution: | Department of Mathematics, University of California at Los Angeles, Los Angeles, California USA;Matematisk Institut, Aarhus Universitat, Aarhus C, Denmark |
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| Abstract: | The two-body S-matrix for an interaction with exponential decay at infinity is defined in a time-independent way and its unitarity is proved directly by local distortion techniques. Complete sets of incoming and outgoing states, or delicate resolvent estimates are not needed for the proof. |
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