The Symmetry of QCD Matter and Functional QCD Approaches
A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Physics".
Deadline for manuscript submissions: 31 August 2025 | Viewed by 431
Special Issue Editors
Interests: functional QCD methods; QCD phase structure and thermodynamic properties; color confinement; dynamical symmetry breaking
Special Issue Information
Dear Colleagues,
It has been long time since people tried to understand the symmetry of quantum chromodynamics (QCD). Specifically, in association to the chiral symmetry breaking and confinement phenomenon of QCD matter, the symmetry of the physical states becomes distinctively different from the fundamental symmetry in QCD Lagrangian. The symmetry of QCD matter depends on the energy scale of the system, and also differs in the content of bound states. As the energy scale decreases, QCD runs from perturbative asymptotic behavior into nonperturbative behavior; hence, to study QCD, nonperturbative approaches are required.
The change of the symmetry pattern of QCD matter at different scales accrues rich phenomena in the properties and structures of QCD matter. It firstly entails the complicated hadron spectrum and inside structures. Hadrons are objects with chiral symmetry breaking and confinement properties. It is vital to understand how this symmetry pattern emerges in hadrons from the fundamental quarks and gluons. Moreover, this symmetry also leads to the rich phase structure of QCD to appear under some environmental conditions, such as temperature and chemical potential. The phase transition of QCD can primarily be characterized by chiral symmetry, which has been the center of attention both theoretically and experimentally. The existence and the possible location of the critical end point (CEP) for chiral phase transition is the main goal of heavy ion collision experiments.
This Special Issue is thus aimed to explore the properties of QCD matter as well as to find the explanation of its symmetry pattern and the underlying mechanism based on nonperturbative approaches, especially functional QCD approaches, including Dyson–Schwinger equations and functional renormalization group approaches. This work will include studies in the framework of functional QCD approaches and other effective models on the phase structures and thermodynamic properties of QCD, hadron spectra, inside structures, and related symmetries.
We look forward to receiving your contributions.
Dr. Fei Gao
Prof. Dr. Yu-xin Liu
Guest Editors
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Keywords
- QCD phase transition;
- hadron spectrum and inside structure;
- dynamical Chiral symmetry breaking;
- deconfinement;
- functional QCD approaches.
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