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On the low energy behavior of Regge poles

Journal Article · · Journal of Mathematical Physics
DOI:https://doi.org/10.1063/1.3496811· OSTI ID:21476568
;  [1];  [2]
  1. School of Mathematics, Cardiff University, Cardiff CF24 4AG (United Kingdom)
  2. School of Computer Science, Cardiff University, Cardiff CF24 3AA (United Kingdom)
We investigate the behavior of Regge poles in the low energy limit. With the use of small argument asymptotics of the spherical Hankel functions, we show that for a finite square well potential, the associated Regge poles tend to the spectral points of the limiting self-adjoint problem. This is generalized to a compactly supported potential by applying a resolvent argument to the difference of the nonzero and zero energy wavefunctions. Furthermore, by an integral equation method we prove analogous results for a potential such that |(1+r)U(r)| is integrable. This confirms the experimental results which show that Regge poles formed during low energy electron elastic scattering become stable bound states.
OSTI ID:
21476568
Journal Information:
Journal of Mathematical Physics, Journal Name: Journal of Mathematical Physics Journal Issue: 10 Vol. 51; ISSN JMAPAQ; ISSN 0022-2488
Country of Publication:
United States
Language:
English