The quark-meson coupling model, based on a mean field description of non-overlapping nucleon bags bound by the self-consistent exchange of $\sigma$, $\omega$ and $\rho$ mesons, is extended to investigate the properties of finite nuclei. Using the Born-Oppenheimer approximation to describe the interacting quark-meson system, we derive the effective equation of motion for the nucleon, as well as the self-consistent equations for the meson mean fields. The model is first applied to nuclear matter, after which we show some initial results for finite nuclei.Comment: The revised version. This is tar, compressed and uuencoded (including 3 tables and 8 figures). 45 page

Deep-inelastic scattering reactions provided the first clear evidence that the quark structure of nucleons and nuclei were significantly different. We review the progress in understanding the nuclear dependence of deep-inelastic scattering reactions and parton distributions-the nuclear EMC effect. While there is now a considerable body of high-quality deep-inelastic data, more work is required to exploit other hard probes with differing sensitivities to quark-flavor and gluon degrees of freedom. A variety of models for the nuclear dependence of structure functions are also considered. Substantial progress has been made in establishing the validity of these models and it is now clear what must be included in any realistic treatment. Nevertheless, it is not yet possible to identify a definitive set of mechanisms that account satisfactorily for the experimental nuclear dependence.

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Relativistic Hartree equations for spherical nuclei have been derived from a relativistic quark model of the structure of bound nucleons which interact through the (self-consistent) exchange of scalar (σ) and vector (ω and ρ) mesons. The coupling constants and the mass of the σ-meson are determined from the properties of symmetric nuclear matter and the rms charge radius in 40 Ca. Calculated properties of static, closed-shell nuclei from 16 O to 208 Pb are compared with experimental data and with results of Quantum Hadrodynamics (QHD). The dependence of the results on the nucleon size and the quark mass is investigated. Several possible extensions of the model are also discussed.

The quark-meson coupling (QMC) model, which has been successfully used to describe the properties of both infinite nuclear matter and finite nuclei, is applied to a systematic study of Λ, Σ and Ξ hypernuclei. Assumptions made in the present study are, (i) the (self-consistent) exchanged scalar, and vector, mesons couple only to the u and d quarks, and (ii) an SU(6) valence quark model for the bound nucleons and hyperon. The model automatically leads to a very weak spin-orbit interaction for the Λ in a hypernucleus. Effects of the Pauli blocking at the quark level, particularly in the open, coupled, ΣN − ΛN channel (strong conversion), is also taken into account in a phenomenological way.