As theoretical physics evolves, so do Feynman diagrams. For instance, a thriving branch of physics known as string theory holds that the fundamental ingredients of matter and energy are not ...

Forbes contributors publish independent expert analyses and insights. The Universe is out there, waiting for you to discover it. It's one of the most brilliant, controversial and unproven ideas in ...

Now then, in string theory, Feynman diagrams are replaced by surfaces, and wordlines turn into world-sheets. This is because the strings oscillate in space and time, and as they oscillate ...

While investigating how string theory can be used to explain ... the Euler-Beta Function and the Feynman Diagram. Euler-Beta functions are mathematical functions used to solve problems in diverse ...

Here the governing theory is quantum chromodynamics (QCD). The QCD analogues of photons are particles called color gluons, and their coupling is not weak. Usually, when we do a calculation in QCD, a ...

Quantum theory ... Perhaps Feynman’s conceptual switch from fields to particles would avoid the problem. To understand how one electron influences another, using Feynman diagrams, you have ...

The basic problem in formulating a quantum theory of gravity was already recognized ... the problem was confirmed explicitly in the first Feynman-diagram calculations of the radiative corrections ...