Hot nuclear matter in the modified quark-meson coupling model with quark-quark correlations
نویسندگان
چکیده
منابع مشابه
Hot Nuclear Matter in the Quark Meson Coupling Model
We study here hot nuclear matter in the quark meson coupling (QMC) model which incorporates explicitly quark degrees of freedom, with quarks coupled to scalar and vector mesons. The equation of state of nuclear matter including the composite nature of the nucleons is calculated at finite temperatures. The calculations are done taking into account the medium–dependent bag constant. Nucleon prope...
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We explore in more detail the modified quark meson coupling (MQMC) model in nuclear matter. Based on previous studies two different functional forms for the density dependence of the bag constant are discussed. For uniform matter distributions the MQMC model can be cast in a form identical to QHD by a redefinition of the sigma meson field. It is then clear that modifications similar to those in...
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The quark-meson coupling model for nuclear matter, which describes nuclear matter as non-overlapping MIT bags bound by the self-consistent exchange of scalar and vector mesons, is modified by introducing medium modification of the bag constant. We argue that the bag constant should decrease with increasing density as a consequence of partial chiral symmetry restoration in nuclear medium. We mod...
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Short-range quark-quark correlations are introduced into the quark-meson coupling (QMC) model in a simple way. The effect of these correlations on the structure of the nucleon in dense nuclear matter is studied. We find that the short-range correlations may serve to reduce a serious problem associated with the modified quark-meson coupling model (within which the bag constant is allowed to decr...
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An explicit quark model, based on a mean eld description of non-overlapping nucleon bags bound by the self-consistent exchange of , ! and mesons, is used to investigate the properties of both nuclear and neutron matter. We establish a clear understanding of the relationship between this model, which incorporates the internal structure of the nucleon, and QHD. Finally, we use the model to study ...
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ژورنال
عنوان ژورنال: Journal of Physics G: Nuclear and Particle Physics
سال: 2000
ISSN: 0954-3899,1361-6471
DOI: 10.1088/0954-3899/26/7/309