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Elimination of the Landau Ghost from Chiral Solitons

J. Hartmann, F. Beck, W. Bentz

hep-pharXiv:hep-ph/9410263

Abstract

We show a practical way based on the Källén-Lehmann representation for the two-point functions to eliminate the instability of the vacuum against formation of small sized meson configurations in the chiral σ model.

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