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Estimate of Quantum corrections to the Mass of the Chiral Soliton in the Nambu--Jona--Lasinio Model
H. Weigel, R. Alkofer, H. Reinhardt
The Bethe--Salpeter equation for pion fluctuations off the chiral soliton in the Nambu--Jona--Lasinio model is constructed. By Goldstone's theorem this equation has rotational and…
The Skyrmion limit of the Nambu--Jona-Lasinio soliton
U. Zückert, R. Alkofer, H. Reinhardt +1
The special role of the isoscalar mesons ( and ) in the NJL soliton is discussed. Stable soliton solutions are obtained when the most general ansatz compatible with vanishing…
On the analytic properties of chiral solitons in the presence of the --meson
H. Weigel, U. Zückert, R. Alkofer +1
A thorough study is performed of the analytical properties of the fermion determinant for the case that the time components of (axial) vector fields do not vanish. For this purpose…
Topologically non--trivial chiral transformations: The chiral invariant elimination of the axial vector meson
R. Alkofer, H. Reinhardt, J. Schlienz +1
The role of chiral transformations in effective theories modeling Quantum Chromo Dynamics is reviewed. In the context of the Nambu--Jona--Lasinio model the hidden gauge and massive…
Scale Anomaly Induced Instanton Interaction
K. Langfeld, H. Reinhardt
The binary interaction of large size instantons in a SU(2) Yang-Mills theory is obtained from the one-loop effective action for the field strength. The instanton interaction is cal…