Feynman rules

E9109

computational method in theoretical physics prescription in quantum field theory

Feynman rules are a set of prescriptions in quantum field theory that translate particle interactions into mathematical expressions using Feynman diagrams to compute scattering amplitudes and other physical quantities.

Aliases (1)

Feynman rules for quantum electrodynamics ×1

Statements (50)

Predicate	Object
instanceOf	computational method in theoretical physics → prescription in quantum field theory →
appliesTo	interacting quantum fields → particle interactions → perturbative expansions in coupling constants → scattering processes →
assumes	expansion in powers of coupling constants → perturbation theory →
basedOn	Feynman diagrams →
component	integration over internal momenta → momentum conservation at each vertex → propagator factors for internal lines → symmetry factors for diagrams → vertex factors for interaction points → wavefunction factors for external lines →
dependsOn	choice of Lagrangian density → choice of gauge → field content of the theory → interaction terms in the Lagrangian →
describedAs	set of prescriptions for translating diagrams into mathematical expressions →
field	quantum field theory →
goal	prediction of measurable quantities in particle experiments → systematic translation of Feynman diagrams into integrals →
hasVariant	Feynman rules for quantum chromodynamics → Feynman rules for quantum electrodynamics → Feynman rules for scalar field theory → Feynman rules for the Standard Model → Feynman rules in Euclidean space → Feynman rules in Minkowski space → Feynman rules in canonical quantization → Feynman rules in momentum space → Feynman rules in path integral formalism → Feynman rules in position space →
introducedBy	Richard Feynman →
relatedTo	Dyson series → S-matrix → Wick’s theorem → path integral formulation of quantum mechanics → time-ordered products →
usedFor	computing correlation functions → computing cross sections → computing decay rates → computing scattering amplitudes → perturbative calculations →
usedIn	high-energy particle physics → loop calculations → quantum chromodynamics computations → quantum electrodynamics computations → renormalization procedures → tree-level calculations →

Referenced by (3)

Subject (surface form when different)	Predicate
reduced Planck constant →	appearsIn
Feynman rules ("Feynman rules for quantum electrodynamics") →	hasVariant
Feynman diagrams →	relatedConcept