New posts in Feynman Diagrams

Use my example to explain why loop diagram will not occur in classical equation of motion?

How to count the number of cubic tree-level Feynman diagrams at $n$ points?

How do derivative couplings affect canonical quantization?

Can Feynman diagrams be used to represent any perturbation theory?

Contradictory result for scalar-field propagator from Feynman rules and LSZ formula

Do virtual particles actually physically exist?

Problem understanding the symmetry factor in a Feynman diagram

Proof of Connected Diagrams

In what sense are loop diagrams quantum corrections?