Flavor-mixing effects on the QCD phase diagram at non-vanishing isospin chemical potential: one or two phase transitions?

2003/03/13 by M. Frank, M. R. Frank, Michael Buballa +3 · 8 citations
Chemistry · Physics and Astronomy · #Chemistry #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Coupling (piping) #Fermion #Flavor #High-Energy Particle Collisions Research #Instanton #Isospin #Materials science #Mixing (physics) #Particle physics #Phase (matter) #Phase diagram #Phase transition #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #hep-ph #nucl-th

paper · pdf · doi:10.1016/s0370-2693(03)00607-5

published as Phys.Lett. B562 (2003) 221-226 · 7 pages, 2 ps figures

arxiv created 2003/03/13 · openalex publication_date 2003/05/13 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We investigate effects of a fixed nonzero isospin chemical potential on the mu_B-T phase diagram of strongly interacting matter using a Nambu--Jona-Lasinio-type four fermion interaction. We focus on the influence of a flavor-mixing interaction induced by instantons. We find that already for rather moderate values of the coupling strength in the flavor-mixing channel the recent findings of two seperate phase transitions do not persist.

Citations

• COLOR SUPERCONDUCTIVITY AT FINITE DENSITY AND TEMPERATURE WITH FLAVOR ASYMMETRY
• Instantons in QCD
• QCD at Finite Isospin Density
• Phase diagram of QCD
• Dynamical Model of Elementary Particles Based on an Analogy with Superconductivity. II

Cited by

• Nonlocal Polyakov–Nambu–Jona-Lasinio model and imaginary chemical potential
• Finite size effects in the Gross-Neveu model with isospin chemical potential
• A large Nc perspective on the QCD phase diagram
• Diquark and pion condensation in random matrix models for two-color QCD
• QCD at finite isospin density: Chiral perturbation theory confronts lattice data
• Condensates and pressure of two-flavor chiral perturbation theory at nonzero isospin and temperature
• Pion and kaon condensation in a 3-flavor Nambu–Jona-Lasinio model
• Isospin properties of quark matter from a 3-flavor NJL model