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.

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Author:Detlef ZschiescheGND, Gebhard Zeeb, Stefan SchrammGND, Horst StöckerORCiDGND
ArXiv Id:
Document Type:Preprint
Date of Publication (online):2005/11/09
Year of first Publication:2004
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2005/11/09
Tag:chiral; stabile kalte Kerne
QCD; chiral; stable cold nuclear matter
Institutes:Physik / Physik
Wissenschaftliche Zentren und koordinierte Programme / Frankfurt Institute for Advanced Studies (FIAS)
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht