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

• Authors: Rauf Jafarov , Vladimir Rochev
• Languages of publication: EN

Abstracts

EN

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

Keywords

EN

Nambu-Jona-Lasinio model; chiral condensate; mean-field expansion; analytical regularization; meson contributions; 12.39.Fe; 11.30.Rd; 14.40.Aq; 14.40.Cs; 14.65.Bt

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2004
• Volume: 2
• Issue: 2
• Pages: 367-381

Dates

published

1 - 6 - 2004

online

1 - 6 - 2004

Contributors

author

Rauf Jafarov

• Physical Department of Baku State University, Khalilov str., 23, 370148, Baku, Azerbaijan

author

Vladimir Rochev

• Institute for High Energy Physics, Pobeda str., 1, 142280, Protvino, Moscow region, Russia

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Identifiers

DOI

10.2478/BF02475637