Summary
The presence of an additional Coulomb interaction is shown to introduce no modification in the analytic structure of theS-matrix for λ complex at fixedk>0. Moreover, it is found that the asymptotic behaviour of the «nuclear» partial-wave amplitude for λ→∞, |arg λ|<π/2, is essentially the same as in the non-Coulomb case.
Riassunto
Si dimostra che la presenza di una interazione coulombiana supplementare non introduce alcuna modificazione nella struttura analitica della matriceS per λ complesso ek>0 fissato. Inoltre si trova che il comportamento asinto tico dell’ampiezza dell’onda parziale «nucleare» per λ→∞, |arg λ|<π/2, è essenzialmente lo stesso che nel caso non coulombiano.
Резюме
Показано, что наличие дополнительного кулоновского взаимодействия не приводит к видоизменению аналитической структурыS-матрицы для комплексного λ, при фиксированномk>0. Кроме того, обнаружено, что асимптотическое поведение «ядерной» парциальной амплитуды для λ→∞, |arg λ|<π/2 сушественно такое же, как и в некулоновском случае.
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References
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Klarsfeld, S. Analyticity of the Coulomb-nuclearS-matrix for complex angular momenta. Nuovo Cimento A (1965-1970) 48, 1059–1074 (1967). https://doi.org/10.1007/BF02721628
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DOI: https://doi.org/10.1007/BF02721628