Electrodynamic metaphors: communicating particle physics with Feynman diagrams

Multi-Particle Processes in QCD without Feynman Diagrams

A way to efficiently compute helicity amplitudes for arbitrary tree-level scattering processes in QCD is presented. The scattering amplitude is evaluated recursively through a set of Dyson-Schwinger equations. The computational cost of this algorithm grows asymptotically as 3n, where n is the number of particles involved in the process, compared to n! in the traditional Feynman graphs approach....

Multi-particle Processes in the Standard Model without Feynman Diagrams

A method to efficiently compute, in a automatic way, helicity amplitudes for arbitrary scattering processes at leading order in the Standard Model is presented. The scattering amplitude is evaluated recursively through a set of Dyson-Schwinger equations. The computational cost of this algorithm grows asymptotically as 3n, where n is the number of particles involved in the process, compared to n...

Feynman diagrams versus Fermi-gas Feynman emulator

Communicating with Diagrams and Gestures

There are many ways to communicate. Some forms of communication, like words, are symbolic; the relationship between the content and the form of a message is arbitrary. Other forms, like visualizations and gesture, are at least in part iconic; the relationship between the content and the form can be resemblance. Resemblance confers an immediacy to communications; they can be directly understood ...

superstring Feynman diagrams

The multi-loop amplitudes for the closed, oriented superstring are represented by finite dimensional integrals of explicit functions calculated through the super-Schottky group parameters and interaction vertex coordinates on the supermanifold. The integration region is proposed to be consistent with the group of the local symmetries of the amplitude and with the unitarity equations. It is show...