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Effective model for the QCD phase transitions at finite baryon density (CROSBI ID 222929)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Benić, Sanjin ; Mishustin, Igor ; Sasaki, Chihiro Effective model for the QCD phase transitions at finite baryon density // Physical review. D, Particles, fields, gravitation, and cosmology, 91 (2015), 125034-1-125034-13. doi: 10.1103/PhysRevD.91.125034

Podaci o odgovornosti

Benić, Sanjin ; Mishustin, Igor ; Sasaki, Chihiro

engleski

Effective model for the QCD phase transitions at finite baryon density

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.

Chiral Lagrangians ; Quark Gluon Plasma ; Quark deconfinement ; Phase transitions

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Podaci o izdanju

91

2015.

125034-1-125034-13

objavljeno

1550-7998

10.1103/PhysRevD.91.125034

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Fizika

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