Naslov
Effective model for the QCD phase transitions at finite baryon density

Autori
Benić, Sanjin ; Mishustin, Igor ; Sasaki, Chihiro

Izvornik
Physical Review D - Particles, Fields, Gravitation, and Cosmology (1550-7998) 91 (2015); 125034-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

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

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA