Journalartikel

Jahr der Veröffentlichung: 2006

Seiten: 2199-2217

Zeitschrift: Journal of Physics G: Nuclear and Particle Physics

Bandnummer: 32

Heftnummer: 11

ISSN: 0954-3899

eISSN: 1361-6471

Open Access Status: Green

DOI Link: https://doi.org/10.1088/0954-3899/32/11/013

Verlag: IOP Publishing

Abstract: 
As an alternative to the two-quark condensate we propose a specific four-quark condensate as an order parameter of chiral symmetry restoration. We show that this four-quark condensate is closely connected to observable quantities. Within a resonance gas model, we calculate the in-medium changes of two- and four-quark condensate as functions of temperature and baryo-chemical potential. In this way, we estimate the line of chiral symmetry restoration in the temperature potential plane and also as a function of energy and baryon density. It turns out that the line determined from the vanishing of the four-quark condensate is extremely constant as a function of the energy density.

Harvard-Zitierstil: Leupold, S. (2006) Four-quark condensates and chiral symmetry restoration in a resonance gas model, Journal of Physics G: Nuclear and Particle Physics, 32(11), pp. 2199-2217. https://doi.org/10.1088/0954-3899/32/11/013

APA-Zitierstil: Leupold, S. (2006). Four-quark condensates and chiral symmetry restoration in a resonance gas model. Journal of Physics G: Nuclear and Particle Physics. 32(11), 2199-2217. https://doi.org/10.1088/0954-3899/32/11/013