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The spectra of the scalar (σ) and vector (ω) mesons in nuclear matter are studied in detail using the quark-meson coupling (QMC) model. It is shown that above normal nuclear matter density the effects of σ-ω mixing and the decay of the σ into 2π change the spectra of σ and ω mesons considerably. As in Quantum Hadrodynamics we find a remarkable spectral change in the σ meson and the longitudinal mode...
The propagation of the scalar (σ) and vector (ω) mesons in nuclear matter is studied in detail using the Walecka model over a wide range of densities and including the effects of a finite σ width through the inclusion of a two-pion loop. We calculate the dispersion relation and spectral functions of the σ and (transverse and longitudinal) ω mesons, including the effect of σ-ω mixing in matter. It...
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