Impact of baryon resonances on the chiral phase transition at finite temperature and density
We study the phase diagram of a generalized chiral SU(3)-flavor model in mean-field approxi- mation. In particular, the influence of the baryon resonances, and their couplings to the scalar and vector fields, on the characteristics of the chiral phase transition as a function of temperature and baryon-chemical potential is investigated. Present and future finite-density lattice calculations might constrain the couplings of the fields to the baryons. The results are compared to recent lattice QCD calculations and it is shown that it is non-trivial to obtain, simultaneously, stable cold nuclear matter.
| Author: | Detlef Zschiesche, Gebhard Zeeb, Stefan Schramm, Horst Stöcker |
|---|---|
| URN: | urn:nbn:de:hebis:30-20611 |
| ArXiv Id: | http://arxiv.org/abs/nucl-th/0407117 |
| Document Type: | Preprint |
| Language: | English |
| Date of Publication (online): | 09.11.2005 |
| Year of first Publication: | 2004 |
| Publishing Institution: | Univ.-Bibliothek Frankfurt am Main |
| Tag: | chiral; stabile kalte Kerne QCD ; chiral ; stable cold nuclear matter |
| Source: | J.Phys.G31:935-946,2005, http://www.arxiv.org/abs/nucl-th/0407117 |
| HeBIS PPN: | 190333162 |
| Institutes: | Physik |
| Frankfurt Institute for Advanced Studies | |
| Dewey Decimal Classification: | 530 Physik |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Veröffentlichungsvertrag für Publikationen ohne Print on Demand |
