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Revision as of 12:38, 20 May 2026
quark is a Book II topic in the Quantum Collection. A quantum quark is an elementary fermion that carries color charge and participates in the strong interaction. Quarks combine through gluon-mediated quantum chromodynamics to form hadrons such as protons, neutrons, and mesons. They are not observed as isolated free particles under ordinary conditions. A quantum quark is an elementary fermion that carries color charge and participates in the strong interaction. Quarks combine through gluon-mediated quantum chromodynamics to form hadrons such as protons, neutrons, and mesons. They are not observed as isolated free particles under ordinary conditions. The six quark flavors are up, down, charm, strange, top, and bottom. Each flavor appears in color states conventionally called red, green, and blue, together with corresponding antiquarks.
Flavors and color
The six quark flavors are up, down, charm, strange, top, and bottom. Each flavor appears in color states conventionally called red, green, and blue, together with corresponding antiquarks. Color is not ordinary visual color but a quantum charge of the strong interaction.[1]
Confinement
Quantum chromodynamics predicts that the force between separated color charges does not weaken in the same way as electromagnetism. Instead, quarks are confined inside color-neutral hadrons. High-energy collisions can produce jets that reflect the underlying quark and gluon dynamics.[2][3]
Hadron structure
Baryons contain three valence quarks, while mesons contain a quark-antiquark pair, together with gluons and sea quark-antiquark pairs. The mass and spin of hadrons arise from a combination of quark masses, gluon fields, motion, and QCD binding energy.
Description
quark is a matter-scale concept used to organize how quantum theory describes atoms, particles, fields, condensed matter, plasma, or spacetime-related systems. In the Quantum Collection it is placed by scale so the reader can move from materials and molecules down to subatomic degrees of freedom.
Quantum context
At this scale, the relevant behavior is controlled by quantized states, interactions, conservation laws, and the way excitations or particles are observed. The concept is normally linked to measurable properties such as energy, momentum, charge, spin, spectra, scattering rates, or collective modes.
Role in the collection
This page provides a compact reference point for related pages in Book II. It should be read together with nearby matter-scale topics and the corresponding foundations in quantum mechanics.[4]
See also
Table of contents (84 articles)
Index
Full contents
References
- ↑ Griffiths, David J. (2008). Introduction to Elementary Particles (2nd ed.). Wiley-VCH. ISBN 978-3-527-40601-2.
- ↑ Gross, David J.; Wilczek, Frank (1973). "Ultraviolet Behavior of Non-Abelian Gauge Theories". Physical Review Letters 30 (26): 1343-1346. doi:10.1103/PhysRevLett.30.1343.
- ↑ Politzer, H. David (1973). "Reliable Perturbative Results for Strong Interactions?". Physical Review Letters 30 (26): 1346-1349. doi:10.1103/PhysRevLett.30.1346.
- ↑ "Quantum mechanics". https://en.wikipedia.org/wiki/Quantum_mechanics.
Source attribution: Physics:Quantum quark