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Feynman Diagram Builder
Build QED Feynman diagrams — click to place particles, drag to connect
Particles
e⁻
Electron
e⁺
Positron
γ
Photon
●
QED Vertex
↔
Connect nodes
✥
Move nodes
Clear diagram
Analysis
Feynman Rules (QED):
Place particles and connect them at vertices.
The diagram analysis will appear here.
QED Feynman rules:
Propagator e⁻: 1/(p̸−m)
Propagator γ: −igμν/k²
Vertex: −ieγμ
Loop order L = I − V + 1
Each loop → factor of αₑₘ/π