pictorial representations of the mathematical expressions governing the behavior of subatomic particles

Usually Feynman diagrams are used to 'picture' field theory, but these diagrams are Feynman diagrams are pictorial representations of the mathematical expressions governing the behavior of subatomic particles.

graphical representations used to calculate the probabilities of particle interactions in quantum field theory

Feynman diagrams are graphical representations used to calculate the probabilities of particle interactions in quantum field theory.

a graphical representation of a perturbative contribution to the transition amplitude

A Feynman diagram is a graphical representation of a perturbative contribution to the transition amplitude.

mathematical expressions describing the behaviour of subatomic particles

Feynman diagrams are mathematical expressions describing the behaviour of subatomic particles.

an easy way of drawing particle interactions

The style of the chart suggests a Feynman diagram - an easy way of drawing particle interactions.

graphical depictions known as Feynman diagrams

Within quantum mechanics, graphical depictions known as Feynman diagrams provide the standard method for analyzing and thinking about phenomena in particle physics.

diagrams that show what happens when elementary particles collide

Feynman diagrams, named after Richard Feynman, are diagrams that show what happens when elementary particles collide.