Krein, G. [UNESP]Thomas, A. W.Tsushima, K.2014-05-272014-05-271999-04-19Nuclear Physics A, v. 650, n. 3, p. 313-325, 1999.0375-9474http://hdl.handle.net/11449/65762The 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. © 1999 Elsevier Science B.V.313-325engArtigo10.1016/S0375-9474(99)00117-7WOS:000080248700005Acesso restrito2-s2.0-0033583385