Mean-field expansion and meson effects in chiral condensate of analytically regularized Nambu -- Jona-Lasinio model

Details Mean-field expansion and meson effects in chiral condensate of analytically regularized Nambu -- Jona-Lasinio model Mean-field expansion and meson effects in chiral condensate of analytically regularized Nambu -- Jona-Lasinio model

2003-11-26

arxiv.org/abs/hep-ph/0311339v2

Central Eur.J.Phys. 2 (2004) 367-381

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, Plain LaTex, no figures, final version

Scientific paper

10.2478/BF02475637

Scalar meson contributions in chiral quark condensate are calculated for analytically regularized Nambu -- Jona-Lasinio model in framework of mean-field expansion in bilocal-source formalism. Sigma-meson contribution for physical values of parameters is found to be small. Pion contribution is found to be significant and should be taken into account at the choice of the parameter values.

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