Hot Nuclear Matter in the Quark Meson Coupling Model with Dilatons

Details Hot Nuclear Matter in the Quark Meson Coupling Model with Dilatons Hot Nuclear Matter in the Quark Meson Coupling Model with Dilatons

1998-07-27

arxiv.org/abs/nucl-th/9807069v1

Phys.Rev. C59 (1999) 968-975

Physics

Nuclear Physics

Nuclear Theory

LaTeX/TeX 12 pages (zak2), 13 figures in TeX format

Scientific paper

10.1103/PhysRevC.59.968

We study hot nuclear matter in an explicit quark model based on a mean field description of nonoverlapping nucleon bags bound by the self-consistent exchange of scalar and vector mesons as well as the glueball field. The glueball exchange as well as a realization of the broken scale invariance of quantum chromodynamics is achieved through the introduction of a dilaton field. The calculations also take into account the medium-dependence of the bag constant. The effective potential with dilatons is applied to nuclear matter. The nucleon properties at finite temperature as calculated here are found to be appreciably different from cold nuclear matter. The introduction of the dilaton potential improves the shape of the saturation curve at T=0 and is found to affect hot nuclear matter significantly.

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