Perturbative and Nonperturbative Aspects of Quantum Chromodynamics (QCD)
A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Physics".
Deadline for manuscript submissions: 31 March 2026 | Viewed by 30
Special Issue Editors
Interests: hadron structure; nonperturbative QCD; neutrino properties; neutron stars properties
Interests: QCD; hadron physics in vacuum; hadron physics under extreme conditions of temperature and density
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleagues,
Quantum Chromodynamics (QCD) remains a mystery, although it has been thought to underlie the strong interactions associated with low energy for almost 50 years. The features of QCD theory are strongly dependent on the energy scale (regime). In higher-energy regimes, QCD exhibits strong coupling, and this regime is known as the non-perturbative regime of QCD. In this regime, the perturbative method cannot be applied and broken down. Non-perturbative QCD is characterized by confinement and spontaneously chiral symmetry breaking (SCSB). The latter is believed to be a process that provides particles with mass generation, with particle physicists suggesting that most particle mass in the universe is caused by this spontaneous breaking, in addition to the current mass of the particle that is provided by the Higgs mechanism. Another feature of QCD, QCD confinement, is a challenging non-perturbative aspect of QCD. This confinement maintains the isolation of the quarks and gluons inside the particle hadron, so that they cannot see beyond the hadron particle. This is because this QCD property is challenging to overcome and poorly understood. Therefore, to enhance our understanding of QCD, this non-perturbative QCD requires further study. Studies on QCD theory are not limited to the standard model (SM) of QCD, but also address QCD theory beyond the SM. We believe that QCD theory beyond SM could provide us with novel information regarding QCD, particularly concerning soft QCD.
Compared to the strong coupling of QCD, QCD can exhibit weaker coupling, which is referred to as perturbative QCD. With this weaker coupling, the perturbative technique can be applied by expanding the strong coupling or the fields to a higher order. Such perturbative QCD is generally used to compute the cross-section in the lower-x and high energy, such as in the physics collider, to obtain a more precise cross-section by adding a higher order of coupling. This perturbative QCD also allows us to understand challenging aspects of QCD and detect new physics and other physical phenomena in the collider.
This Special Issue aims to provide insights into the properties of non-perturbative and perturbative QCD from the perspective of SM theory and beyond. We therefore invite our colleagues to contribute to this Special Issue with current research on QCD.
In this Special issue, original articles and reviews are welcome. Research topics may include (but are not limited to) the following areas: quantum chromodynamics; non-perturbative QCD; perturbative QCD; QCD confinement; spontaneous chiral symmetry breaking; collider physics; jets and showers in the collider; gluon saturation; QCD in nuclear media; beyond standard model of QCD; and quark-gluon plasma (QGP).
We look forward to receiving your contributions.
Dr. Parada Tobel Paraduan Hutauruk
Prof. Dr. Jesus Javier Cobos-Martinez
Guest Editor
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Keywords
- quantum Chromodynamics
- nonperturbative QCD
- perturbative QCD
- QCD confinement
- spontaneous chiral symmetry breaking
- collider physics
- jets and showers in collider
- gluon saturation
- QCD in nuclear medium
- beyond standard model of QCD
- quark-gluon plasma
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