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Fock terms in the quark-meson coupling model

G. Krein·A. W. Thomas·K. Tsushima
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Abstract

The mean field description of nuclear matter in the quark-meson coupling model is improved by the inclusion of exchange contributions (Fock terms). The inclusion of Fock terms allows us to explore the momentum dependence of meson-nucleon vertices and the role of pionic degrees of freedom in matter. It is found that the Fock terms maintain the previous predictions of the model for the in-medium properties of the nucleon and for the nuclear incompressibility. The Fock terms significantly increase the absolute values of the single-particle, four-component scalar and vector potentials, a feature that is relevant for the spin-orbit splitting in finite nuclei.

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G. Krein, A. W. Thomas, K. Tsushima. 1999-03-08. Fock terms in the quark-meson coupling model. https://doi.org/10.1016/s0375-9474(99)00117-7

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