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The Nambu-Jona-Lasinio model in light of chiral perturbation theory

1990

10 pages

Published in:

Nucl.Phys.B 335 (1990) 67-76

Published: 1990

DOI:

10.1016/0550-3213(90)90169-E

reference search25 citations

Citations per year

Abstract: (Elsevier)

We analyze the quark mass dependence of the chiral parameters calculated from an SU(2) Nambu-Jona-Lasinio model in the context of chiral perturbation theory. We find that in the mean-field approximation the model is unable to reproduce, within the experimental bounds, two parameters of the low-energy SU(2) effective lagrangian of Gasser and Leutwyler. Our results suggest that the model is not suited to give quantitative predictions concerning quark mass dependences. We also comment on the strange quark mass dependence of the chiral parameters in the SU(3) version of the model.

Jona-Lasinio-Nambu model
symmetry: SU(2)
symmetry: SU(3)
perturbation theory: chiral
quark: mass
mass: quark
mean field approximation
effective Lagrangian

References(25)

Figures(0)

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