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  1. 1 Open Physics

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  1. 1 2004

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  1. 1 Jafarov R.

  2. 1 Rochev V.

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

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Jafarov R., Rochev V.
Open Physics
|
2004
|
vol. 2
|
issue 2
367-381
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.
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