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Il Nuovo Cimento (1955-1965)

, Volume 30, Issue 1, pp 406–425 | Cite as

Perturbation expansion within unitary symmetry

  • J. Ginibre
Article

Summary

The number of parameters which occur in perturbation expansions of masses and electromagnetic quantities within unitary symmetry is calculated. The contributions of the various irreducible parts in the second order mass formula are then separated and properly normalized; which allows to compare the relative magnitude of the different orders of perturbation in the physically interesting cases.

Riassunto

Si calcola il numero di parametri che si riscontrano nello sviluppo perturbativo delle masse e delle grandezze elettromagnetiehe nella simmetria unitaria. Si separano poi i contributi delle varie parti irriducibili nella formula delle masse di secondo ordine e si normalizzano opportunamente; ciò permette di confrontare la grandezza relativa dei diversi ordini di perturbazione nei casi di interesse fisico.

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Copyright information

© Società Italiana di Fisica 1963

Authors and Affiliations

  • J. Ginibre
    • 1
  1. 1.Laboratoire de Physique Théorique et Hautes EnergiesOrsay (S.-et-O.)

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