quantum chromodynamics
E50861
Quantum chromodynamics is the quantum field theory that describes the strong nuclear force binding quarks and gluons inside hadrons such as protons and neutrons.
Aliases (1)
- QCD ×2
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
gauge theory
→
quantum field theory → theory of strong interaction → |
| abbreviation |
QCD
→
|
| appliesTo |
gluons
→
hadrons → neutrons → protons → quarks → |
| basedOn |
Yang–Mills theory
→
|
| describes |
binding of quarks inside hadrons
→
interaction mediated by gluons → strong interaction between quarks and gluons → strong nuclear force → |
| developedIn |
1970s
→
|
| energyScaleBehavior |
coupling decreases at high energies
→
coupling increases at low energies → |
| explains |
binding of quarks into baryons
→
binding of quarks into mesons → |
| field |
particle physics
→
theoretical physics → |
| formulatedWithin |
Standard Model of particle physics
→
|
| hasCoupling |
strong coupling constant
→
|
| hasForceCarrier |
gluon
→
|
| hasGaugeGroup |
SU(3)
→
|
| hasInteractionType |
non-Abelian gauge interaction
→
|
| hasProperty |
asymptotic freedom
→
chiral symmetry breaking → confinement → |
| hasQuarkFlavors |
bottom quark
→
charm quark → down quark → strange quark → top quark → up quark → |
| hasSymmetry |
color SU(3) gauge symmetry
→
|
| isPartOf |
Standard Model
→
|
| mediatedBy |
gluons
→
|
| predicts |
existence of eight gluons
→
jet production in high-energy collisions → scaling violations in deep inelastic scattering → |
| relevantFor |
hadron spectroscopy
→
nuclear forces between nucleons → quark–gluon plasma → structure of neutrons → structure of protons → |
| studiedUsing |
effective field theories at low energies
→
lattice QCD → perturbation theory at high energies → |
| usesCharge |
color charge
→
|
Referenced by (7)
| Subject (surface form when different) | Predicate |
|---|---|
|
quantum chromodynamics
("QCD")
→
|
abbreviation |
|
WQCD
("QCD")
→
|
callSignMeaning |
|
Gell-Mann matrices
→
|
field |
|
Frank Wilczek
→
|
fieldOfWork |
|
Frank Wilczek
→
|
knownFor |
|
Standard Model
→
|
subtheory |
|
LSZ reduction formula
→
|
usedIn |