Feynman diagrams
E2030
Feynman diagrams are graphical representations used in quantum field theory to visualize and calculate particle interactions and processes.
Aliases (2)
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
computational tool
→
concept in quantum field theory → graphical representation → |
| appliesTo |
Standard Model of particle physics
→
electroweak theory → quantum chromodynamics → quantum electrodynamics → scalar field theory → |
| basedOn |
path integral formulation
→
perturbation theory → |
| field |
high-energy physics
→
particle physics → quantum field theory → |
| hasComponent |
external lines
→
internal lines → vertices → |
| hasProperty |
each diagram corresponds to a mathematical expression
→
external legs correspond to incoming and outgoing particles → internal lines correspond to virtual particles → loop number related to quantum corrections → order in coupling constant determined by number of vertices → topological structure encodes momentum flow → |
| historicalImpact |
revolutionized practical calculations in quantum electrodynamics
→
widely adopted standard tool in particle physics → |
| introducedIn |
1940s
→
|
| inventor |
Richard Feynman
→
|
| notationFor |
S-matrix elements
→
time-ordered products of fields → |
| relatedConcept |
Dyson series
→
Feynman rules → S-matrix → loop diagram → path integral → propagator → renormalization → tree-level diagram → vertex factor → |
| represents |
external particle states
→
interaction vertices → propagators → terms in a perturbative expansion → virtual particles → |
| usedFor |
bookkeeping of interaction terms
→
calculating scattering amplitudes → computing cross sections → computing decay rates → organizing perturbation theory → representing virtual particle exchange → visualizing particle interactions → |
Referenced by (10)
| Subject (surface form when different) | Predicate |
|---|---|
|
1983 Alix G. Mautner Memorial Lectures
→
quantum electrodynamics ("Feynman diagram") → quantum field theory → |
usesConcept |
|
Feynman rules
→
|
basedOn |
|
Wick’s theorem
("Feynman diagram technique")
→
|
foundationFor |
|
Richard Feynman
→
|
knownFor |
|
S-matrix
→
|
relatedConcept |
|
Dyson series
→
|
relatedTo |
|
Dyson’s proof of equivalence of Feynman and Schwinger–Tomonaga formulations of QED
→
|
relatesTo |
|
QED: The Strange Theory of Light and Matter
→
|
topic |