Yukawa coupling

E409824

interaction strength parameter in quantum field theory physical constant

The Yukawa coupling is a parameter in quantum field theory that quantifies the strength of interaction between a scalar field (such as the Higgs field) and a fermion, determining the fermion’s mass after symmetry breaking.

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All labels observed (2)

Label	Occurrences
Yukawa coupling canonical	1
Yukawa interaction	1

Statements (50)

Predicate	Object
instanceOf	interaction strength ⓘ parameter in quantum field theory ⓘ physical constant ⓘ
appearsIn	Grand Unified Theories ⓘ Standard Model Effective Field Theory ⓘ Standard Model ⓘ surface form: Standard Model of particle physics quantum field theory ⓘ supersymmetric theories ⓘ two-Higgs-doublet models ⓘ
associatedWith	Dirac fermion fields ⓘ Higgs mechanism ⓘ scalar fields ⓘ
constrainedBy	Higgs boson coupling measurements ⓘ collider experiments ⓘ
dependsOn	renormalization scale ⓘ
describes	strength of interaction between a scalar field and a fermion ⓘ
electronYukawaOrderOfMagnitude	about 10^-6 ⓘ
governs	interaction between Higgs boson and fermions ⓘ
hasDomain	high-energy physics ⓘ particle physics ⓘ theoretical physics ⓘ
hasMathematicalForm	dimensionless coupling constant in four spacetime dimensions ⓘ
hasProperty	can be complex in general ⓘ can be different for each fermion species ⓘ can lead to flavor mixing when non-diagonal in flavor space ⓘ
hasRole	determines fermion mass after symmetry breaking ⓘ
hasUnit	dimensionless in natural units ⓘ
historicalOrigin	Yukawa meson theory ⓘ surface form: Yukawa’s theory of nuclear forces (Yukawa potential)
implies	fermion mass proportional to coupling strength times Higgs vacuum expectation value ⓘ
largestExample	top quark Yukawa coupling ⓘ
namedAfter	Hideki Yukawa ⓘ
relatedConcept	gauge coupling ⓘ quartic scalar coupling ⓘ
relatedTo	Cabibbo–Kobayashi–Maskawa matrix ⓘ surface form: CKM matrix PMNS matrix ⓘ fermion flavor structure ⓘ mass hierarchy of fermions ⓘ
relatesTo	Higgs field ⓘ electroweak symmetry breaking ⓘ fermion masses ⓘ spontaneous symmetry breaking ⓘ
smallestExamples	electron Yukawa coupling ⓘ neutrino Yukawa couplings in many models ⓘ
subjectTo	renormalization group running ⓘ
symbol	Y ⓘ y ⓘ
topQuarkYukawaApproxValue	approximately 1 at the electroweak scale ⓘ
usedFor	calculating fermion production via Higgs exchange ⓘ predicting Higgs boson decay rates to fermions ⓘ
usedIn	Yukawa interaction term in the Lagrangian ⓘ

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: Yukawa coupling
Description of subject: The Yukawa coupling is a parameter in quantum field theory that quantifies the strength of interaction between a scalar field (such as the Higgs field) and a fermion, determining the fermion’s mass after symmetry breaking.

Referenced by (2)

Full triples — surface form annotated when it differs from this entity's canonical label.

Yukawa potential → relatedConcept → Yukawa coupling ⓘ

Yukawa → hasDerivativeTerm → Yukawa coupling ⓘ

this entity surface form: Yukawa interaction