Summary
A potential which saturates Cohn and Calogero’s independently derived upper bound on the number of bound states for a monotonic potential is found, thus showing that this bound is the best possible in quite a strict sense.
Riassunto
Si trova un potenziale che satura il limite superiore, dedotto indipendentemente da Cohn e da Calogero, al numero di stati legati per un potenziale monotono, mostrando così che questo limite è il migliore possibile in senso abbastanza stretto.
Реэюме
Определяется потенциал, который насышает верхнюю границу, полученную неэависимо Коном и Калоджеро, для числа свяэанных состояний для монотонного потенциала. Найденный потенциал покаэывает, что зта граница является наилучщей воэможной в строгом смысле.
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References
J. H. E. Cohn:Journ. London Math. Soc.,40, 523 (1965).
F. Calogero:Variable Phase Approach to Potential Scattering (New York, N. Y., and London, 1967), p. 185.
K. Chadan:Nuovo Cimento,58 A, 191 (1968).
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Elizalde, E. About the number of bound states for a very general potential. Nuov Cim A 31, 151–158 (1976). https://doi.org/10.1007/BF02729929
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DOI: https://doi.org/10.1007/BF02729929