Summary
The movement of the poles in theS matrix for non-relativistic scattering by a potential of the formU(r) = αΜ1−Β exp[−Μr]r 1+Β with small coupling constant is investigated to first order in α. It is found that for Β⊋ 0 a second kind of trajectory appears which is not present for the Yukawa potential. For |K|2«Μ2 the picture of trajectories shows periodicity with respect to Β.
Riassunto
Si studia sino al primo ordine in α il movimento dei poli nella matriceS per lo scattering non relativistico da parte di un Potenziale della forma(U(r) = αΜ1-Β exp [-Μr])/r1+Β con piccole costanti di accoppiamento. Si trova che per Β⊋ 0 compare un secondo tipo di traiettoria che non è presente nel caso del Potenziale di Yukawa. Per |K | « Μ2 la rappresentazione delle traiettorie presenta una periodicità rispetto a Β.
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Most part of this work has been performd during a stay of the author at the Institute of Theoretical and Experimental Physics, Moscow, USSR.
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Flamm, D. Regge trajectories for a class of weak short-range potentials. Nuovo Cim 29, 1080–1088 (1963). https://doi.org/10.1007/BF02750134
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DOI: https://doi.org/10.1007/BF02750134