Elimination of the Landau ghost from chiral solitons.

@article{Hartmann1994EliminationOT,
  title={Elimination of the Landau ghost from chiral solitons.},
  author={Hartmann and Beck and Bentz},
  journal={Physical review. C, Nuclear physics},
  year={1994},
  volume={50 6},
  pages={
          3088-3093
        }
}
  • Hartmann, Beck, Bentz
  • Published 11 October 1994
  • Physics, Medicine
  • Physical review. C, Nuclear physics
We show a practical way based on the Kaellen-Lehmann representation for the two-point functions to eliminate the instability of the vacuum against formation of small sized meson configurations in the chiral [sigma] model. 

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References

SHOWING 1-10 OF 56 REFERENCES
Phys
  • Rev. 112 (1958) 1404; N.N. Bogoliubov, A.A. Logunov and D.V. Shirkov, Sov. Phys. JETP (Engl. Transl.) 37
  • 1960
Nucl
  • Phys. A 551
  • 1993
Nucl. Phys. A
  • Nucl. Phys. A
  • 1993
Nucl. Phys. A
  • Nucl. Phys. A
  • 1993
Phys
  • Lett. B 301 (1993) 165; B 318
  • 1993
Phys. Lett. A
  • Phys. Lett. A
  • 1993
Phys. Lett. B
  • Phys. Lett. B
  • 1993
Phys. Lett. B
  • Phys. Lett. B
  • 1993
Phys. Lett. B
  • Phys. Lett. B
  • 1993
Th
  • Meissner, F. Grümmer and K. Goeke, Nucl. Phys. A547 (1992) 459 T. Watabe and H. Toki, Progr. Theor. Phys. 87 (1992) 651 J. Schlienz, H. Weigel, H. Reinhardt and R. Alkhofer, Phys. Lett. B 315
  • 1993
...
1
2
3
4
5
...