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 char
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.
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Metadaten
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):2005/11/09
Year of first Publication:2004
Publishing Institution:Univ.-Bibliothek Frankfurt am Main
Release Date:2005/11/09
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 (FIAS)
Dewey Decimal Classification:530 Physik
Sammlungen:Universitätspublikationen
Licence (German):License Logo Veröffentlichungsvertrag für Publikationen

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