Ladder-QCD at finite isospin chemical potential

2003/04/03 by A. Barducci, Giulio Pettini, R. Casalbuoni +2 · 4 citations
Physics and Astronomy · #Chiral symmetry #Chiral symmetry breaking #Condensed matter physics #High-Energy Particle Collisions Research #Isospin #Nambu–Jona-Lasinio model #Order (exchange) #Particle physics #Particle physics theoretical and experimental studies #Phase (matter) #Phase diagram #Phase transition #Physics #Pion #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Quark #hep-ph #nucl-th

paper · pdf · doi:10.1016/s0370-2693(03)00705-6

published as Phys.Lett. B564 (2003) 217-224 · Typed in RevTex4, pages 12, figures 2. Two references added

arxiv created 2003/04/03 · openalex publication_date 2003/06/02 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We use an effective QCD model (ladder-QCD) to explore the phase diagram for chiral symmetry breaking and restoration at finite temperature with different u,d quark chemical potentials. In agreement with a recent investigation based on the Nambu–Jona-Lasinio model, we find that a finite pion condensate shows up for high enough isospin chemical potential μI=(μu−μd)/2. For small μI the phase diagram in the (μB,T) plane shows two first order transition lines and two critical ending points.

Citations

• Quark-hadron phase transitions in Young and old neutron stars
• QCD at Finite Isospin Density
• Effective action for composite operators
• Phase diagram of QCD
• EFFECTIVE LOW-ENERGY THEORIES AND QCD DIRAC SPECTRA

Cited by

• A large Nc perspective on the QCD phase diagram
• Pion and kaon condensation at finite temperature and density
• Diquark and pion condensation in random matrix models for two-color QCD
• Pion and kaon condensation in a 3-flavor Nambu–Jona-Lasinio model