Il Nuovo Cimento A (1965-1970)

, Volume 61, Issue 1, pp 12–27 | Cite as

An extension of Kato's perturbation theory to resonant states

  • N. Milani
  • T. A. Minelli
  • A. Pascolini


Kato's perturbation theory is extended to resonant states by using the Laurent expansion of Bloch's Green's function. The effectiveness of this approach is tested on an exactly solvable model.


È stata messa a punto e sperimentata su un modello esattamente risolvibile una genera-lizzazione del metodo perturbativo di Kato, applicabile alle risonanze, fondata sullo sviluppo di Laurent della funzione di Green di Bloch.


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Copyright information

© Società Italiana di Fisica 1981

Authors and Affiliations

  • N. Milani
    • 1
  • T. A. Minelli
    • 1
    • 2
  • A. Pascolini
    • 1
    • 2
  1. 1.Istituto di Fisica dell'UniversitàPadovaItalia
  2. 2.Istituto Nazionale di Fisica NucleareSezione di PadovaPadovaItalia

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