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Nuclear Saturation with in-Medium Meson Exchange Interactions

R. Rapp·R. Machleidt·J. W. Durso·G. E. Brown
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Abstract

We show that the assumption of dropping meson masses together with conventional many-body effects, implemented in the relativistic Dirac-Brueckner formalism, explains nuclear saturation. We use a microscopic model for correlated $2π$ exchange and include the standard many-body effects on the in-medium pion propagation, which initially increase the attractive nucleon-nucleon ($NN$) potential with density. For the vector meson exchanges in both the $ππ$ and $NN$ sector, we assume Brown-Rho scaling which---in concert with `chiral' $ππ$ contact interactions---reduces the attraction at higher densities.

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R. Rapp, R. Machleidt, J. W. Durso, G. E. Brown. 1997-06-02. Nuclear Saturation with in-Medium Meson Exchange Interactions. https://doi.org/10.1103/physrevlett.82.1827

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