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On the nonrelativistic high-energy scattering on singular potentials

О нерелятивистском рассеянии при высоких энергиях на сингулярных потенциалах

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Il Nuovo Cimento A (1965-1970)

Summary

The scattering problem for a potential of singularityr −4 is solved in terms of the phase function. The high-energy phase shift was found to depend, to a high accuracy, linearly on the symmetry parameter χ of the pure power potentials and the proportionality factor turned out to support the asymptotic exactness of the WKB approximation. Some formulae for the small-distance behaviour of the phase function are also given.

Riassunto

Si risolve in termini della funzione di fase il problema dello scattering per un potenziale di singolaritàr −4. Si è trovato che lo spostamento di fase di alta energia dipende, con grande esattezza, linearmente dal parametro di simmetria χ dei potenziali esponenziali puri ed è risultato che il fattore di proporzionalità comprova l'esattezza asintotica dell'approssimazione WKB. Si danno anche alcune formule per l'andamento a piccole distanze delle funzioni di fase.

Резюме

Проблема рассеяния на сингулярном потенциалеr −4 решается в виде фазовой функции. Получается, что фазовый сдвиг при высокой энергии зависит, с высокой степенью точности, линейно от параметра симметрии χ для чисто степенных потенциалов. Оказывается, что фактор пропорциональности подтверждает асимптотическую точность ВКБ приближения. Также приводятся некоторые формулы, описывающие поведение фазовой функции на малых расстояниях.

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References

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Dolinszky, T. On the nonrelativistic high-energy scattering on singular potentials. Nuov Cim A 22, 578–594 (1974). https://doi.org/10.1007/BF02804840

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  • DOI: https://doi.org/10.1007/BF02804840

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