Effective model for the QCD phase transitions at finite baryon density

Benić, Sanjin and Mishustin, I. and Sasaki, C. (2015) Effective model for the QCD phase transitions at finite baryon density. Physical Review D, 91 (12). pp. 125034-13. ISSN 1550-7998

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Abstract

We introduce an effective quark-meson-nucleon model for the QCD phase transitions at finite baryon density. The nucleon and the quark degrees of freedom are described within a unified framework of a chiral linear sigma model. The deconfinement transition is modeled through a simple modification of the distribution functions of nucleons and quarks, where an additional auxiliary field, the bag field, is introduced. The bag field plays a key role in converting between the nucleon and the quark degrees of freedom. The model predicts that the chiral and the deconfinement phase transitions are always separated. Depending on the model parameters, the chiral transition occurs in the baryon density range of (1.5−15.5)n_0, while the deconfinement transition occurs above 5n_0, where n_0 is the saturation density.

Item Type: Article
Date: 26 June 2015
Subjects: NATURAL SCIENCES > Physics > Nuclear Physics
NATURAL SCIENCES > Physics > Physics of Elementary Particles and Fields
Additional Information: Copyright (2015) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Project code: IP-2013-11-8799
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 01 Jul 2015 11:29
Last Modified: 24 Feb 2016 14:23
URI: http://digre.pmf.unizg.hr/id/eprint/4081

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