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

Abstract

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.

12 pages, Plain LaTex, no figures, final version

References in corpus (2)

• Quark droplets stability induced by external magnetic field
• No Goldstone boson in NJL and Thirring models

Cited by in corpus (5)

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• Clifford algebra Cl(0,6) approach to beyond the standard model and naturalness problems