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.
All labels observed (2)
| Label | Occurrences |
|---|---|
| quantum chromodynamics canonical | 9 |
| QCD | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T401575 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: quantum chromodynamics Context triple: [Standard Model, subtheory, quantum chromodynamics]
-
A.
quantum electrodynamics
Quantum electrodynamics is the quantum field theory that describes how light and matter interact through the exchange of photons, forming the foundation of our understanding of electromagnetic forces at the subatomic level.
-
B.
Feynman diagrams
Feynman diagrams are graphical representations used in quantum field theory to visualize and calculate particle interactions and processes.
-
C.
Euclidean quantum field theory
Euclidean quantum field theory is a formulation of quantum field theory in imaginary (Euclidean) time that enables rigorous mathematical treatment and path-integral representations closely connected to statistical mechanics.
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D.
Standard Model
The Standard Model is the fundamental theory in particle physics that describes the known elementary particles and their interactions (except gravity) through quantum field theories of electromagnetic, weak, and strong forces.
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E.
Gell-Mann–Nishijima formula
The Gell-Mann–Nishijima formula is a key relation in particle physics that connects a particle’s electric charge to its isospin and hypercharge, helping classify hadrons within the quark model.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: quantum chromodynamics Target entity description: Quantum chromodynamics is the quantum field theory that describes the strong nuclear force binding quarks and gluons inside hadrons such as protons and neutrons.
-
A.
quantum electrodynamics
Quantum electrodynamics is the quantum field theory that describes how light and matter interact through the exchange of photons, forming the foundation of our understanding of electromagnetic forces at the subatomic level.
-
B.
Feynman diagrams
Feynman diagrams are graphical representations used in quantum field theory to visualize and calculate particle interactions and processes.
-
C.
Euclidean quantum field theory
Euclidean quantum field theory is a formulation of quantum field theory in imaginary (Euclidean) time that enables rigorous mathematical treatment and path-integral representations closely connected to statistical mechanics.
-
D.
Standard Model
The Standard Model is the fundamental theory in particle physics that describes the known elementary particles and their interactions (except gravity) through quantum field theories of electromagnetic, weak, and strong forces.
-
E.
Gell-Mann–Nishijima formula
The Gell-Mann–Nishijima formula is a key relation in particle physics that connects a particle’s electric charge to its isospin and hypercharge, helping classify hadrons within the quark model.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
gauge theory
ⓘ
quantum field theory ⓘ theory of strong interaction ⓘ |
| abbreviation |
quantum chromodynamics
self-linksurface differs
ⓘ
surface form:
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
ⓘ
surface form:
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 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: quantum chromodynamics Description of subject: Quantum chromodynamics is the quantum field theory that describes the strong nuclear force binding quarks and gluons inside hadrons such as protons and neutrons.
Referenced by (11)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
QCD
this entity surface form:
QCD
subject surface form:
't Hooft anomaly