Chiral symmetry and strangeness content in nuclear physics parametrized by a medium dependent bag constant

Details Chiral symmetry and strangeness content in nuclear physics parametrized by a medium dependent bag constant Chiral symmetry and strangeness content in nuclear physics parametrized by a medium dependent bag constant

2002-12-04

arxiv.org/abs/nucl-th/0212020v2

Phys.Lett. B559 (2003) 207-213

Physics

Nuclear Physics

Nuclear Theory

7 pages LaTeX, 3 PostScript figures, Minor changes, References added, Results not changed

Scientific paper

10.1016/S0370-2693(03)00345-9

Non-perturbative QCD vacuum effects at finite density are parametrized by means of a bag constant $B$. It is extracted from a Nambu- Jona Lasinio model with two or three flavors. The parameter $B$ is used in an effective quark-meson coupling model to study the nuclear phenomenology. We examine the nucleon structure and the thermodynamical properties of symmetric nuclear matter, particular attention is paid to the symmetry energy and to the eventual phase transition to deconfined quark matter. An alternative sketch of the binding mechanism of symmetric nuclear matter emerges within this approach. It is also found that the inclusion of strangeness content in $B$ is crucial for an appropriate description.

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