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Ambiguity of calculations in the Nambu--Jona-Lasinio model and its singular relation to the linear [sigma] model

Journal Article · · Physical Review, D (Particles Fields); (United States)
 [1]
  1. Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260 (United States)
It is shown by elementary means that the calculation in the Nambu--Jona-Lasinio model of the ratio [ital m][sub [sigma]][sup 2]/[ital m][sub [ital f]][sup 2] is ambiguous, and the ambiguity is not removed by doing the calculation in a singular limit ([ital Z][sub 3],[ital Z][sub 4]=0) of the linear [sigma] model.
OSTI ID:
6217294
Journal Information:
Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 48:6; ISSN PRVDAQ; ISSN 0556-2821
Country of Publication:
United States
Language:
English