| Issue |
Europhys. Lett.
Volume 62, Number 3, May 2003
|
|
|---|---|---|
| Page(s) | 327 - 331 | |
| Section | The physics of elementary particles and fields | |
| DOI | https://doi.org/10.1209/epl/i2003-00399-6 | |
| Published online | 01 April 2003 | |
Effective Lagrangian and dynamical symmetry breaking in the 
NJL model
International Educational Centre - 2727 Steeles Ave. W, # 104
Toronto, Ontario, Canada M3J 3G9
Received:
6
November
2002
Accepted:
25
February
2003
Dynamical symmetry breaking and the formation of scalar
condensates in the 
Nambu–Jona-Lasinio model
with two coupling constants has been studied in the framework of
the mean-field approximation. The bosonization procedures of the
model are performed using the functional integration method. The
possibility of the spontaneous CP symmetry breaking in the model
under consideration has been shown. The mass spectrum of the bound
states of fermions, as well as the effective Lagrangian of
interacting scalar and pseudoscalar mesons are obtained.
PACS: 11.30.Qc – Spontaneous and radiative symmetry breaking / 12.39.Fe – Chiral Lagrangians / 24.85.+p – Quarks, gluons, and QCD in nuclei and nuclear processes
© EDP Sciences, 2003
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