Talk:Feynman graph

Graph vs diagram

Feynman graph and Feynman diagram is the same thing in physics, this page is better the mathematical interpretation of the Feynman graph. What is called falsly Feynman diagram is an ill-defined concept. The real distinction is between the covariant and noncovariant graph, the second has rigouros time ordering neglecting the spacely separation of the special relativity where the casuality does not held. Two such "diagrams" correspond to one "graph" in "that" language, this is not explained. In reality the second is THE Feynman graph/diagram, the first is historic and illustrative drawing also used, sometimes called even Feynman diagram, but better just to call it a particular process. Hidaspal 12:44, 10 May 2006 (UTC)

Feynman diagram is English usage. Septentrionalis 21:55, 5 December 2006 (UTC)

Hello, I can't understand a word about this; can you please add an introduction for those people who want to undertans what's a vacum bubble? —Preceding unsigned comment added by 201.253.242.200 (talk) 01:42, 23 June 2008 (UTC)

A vacuum bubble is a diagram with no external legs. The external legs are the particles you start with and the particles you end with, so a vacuum bubble starts from nothing and ends with nothing. For instance, if you had a virtual particle-antiparticle pair created from the vacuum and then annihilated, that would be a vacuum bubble. -- Tim314 (talk) 22:06, 16 August 2008 (UTC)

Uncited Article: Merge?

This article is completely uncited, and seems to be (as discussed above) an aspect of the much better-known Feynman diagram. Rather than try to gather citations and establish notability for this as a separate topic, why don't we just merge the articles, leaving a redirect from here? Chiswick Chap (talk) 15:38, 15 February 2012 (UTC)