Many-Body Theory Exposed! 2008
DOI: 10.1142/9789812813817_0011
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Beyond the mean-field approximation

Abstract: An explicit expression of the generating functional of two-flavor low-energy QCD with external sources in the presence of non-vanishing nucleon densities has been derived recently [1]. Within this approach we derive power counting rules for the calculation of in-medium pion properties. We develop the socalled standard rules for residual nucleon energies of the order of the pion mass and a modified scheme (non-standard counting) for vanishing residual nucleon energies. We also establish the different scales for… Show more

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References 41 publications
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