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arXiv · hep-ph/9410263

Elimination of the Landau Ghost from Chiral Solitons

J. Hartmann·F. Beck·W. Bentz
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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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J. Hartmann, F. Beck, W. Bentz. 1994-10-11. Elimination of the Landau Ghost from Chiral Solitons. https://doi.org/10.1103/physrevc.50.3088

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