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Ghost states and pair effects in the lee model

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Il Nuovo Cimento (1955-1965)

Summary

Pauli and Källén’s treatment of the one particleV-states in the ordinary Lee model is applied to J. S. Goldstein’s extension of the Lee model which includes pair effects in the θ-particle. Contrary to an earlier conclusion, it is shown that there is simultaneously a ghost state in theV-spectrum with energy greater than the normalV energy as well as a ghost in the θ-spectrum for negative values of one of the renormalization constants.

Riassunto

Il trattamento di Pauli e Källén per gli statiV ad una particella nel modello ordinario di Lee viene applicato alla estensione di J. S. Goldstein del modello di Lee, la quale include gli effetti delle coppie sulla particella θ. In contrasto con una conclusione precedente, si mostra che si hanno simultaneamente uno stato fantasma nello spettroV con energia più grande dell’energiaV normale ed un fantasma nello spettro θ per valori negativi di una delle costanti di rinormalizzazione.

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References

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Scarfone, L.M., McKinley, W.A. Ghost states and pair effects in the lee model. Nuovo Cim 17, 678–686 (1960). https://doi.org/10.1007/BF02727557

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  • DOI: https://doi.org/10.1007/BF02727557

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