Effective model for the QCD phase transitions at finite baryon density

S. Benić, I. Mishustin, and C. Sasaki
Phys. Rev. D 91, 125034 – Published 26 June 2015

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 (1.515.5)n0, while the deconfinement transition occurs above 5n0, where n0 is the saturation density.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
2 More
  • Received 26 February 2015

DOI:https://doi.org/10.1103/PhysRevD.91.125034

© 2015 American Physical Society

Authors & Affiliations

S. Benić1,2, I. Mishustin3,4, and C. Sasaki3,5

  • 1Physics Department, Faculty of Science, University of Zagreb, Zagreb 10000, Croatia
  • 2Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
  • 3Frankfurt Institute for Advanced Studies, D-60438 Frankfurt am Main, Germany
  • 4Kurchatov Institute, Russian Research Center, Akademika Kurchatova Square, Moscow 123182, Russia
  • 5Institute of Theoretical Physics, University of Wrocław, PL-50204 Wrocław, Poland

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 91, Iss. 12 — 15 June 2015

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review D

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×