Complete list of Feynman diagrams

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Discussion Overview

The discussion revolves around the existence of a comprehensive list of Feynman diagrams for all known particles, exploring the implications of infinite interactions and the complexity of particle interactions in quantum field theory.

Discussion Character

  • Exploratory
  • Debate/contested

Main Points Raised

  • Some participants question the feasibility of compiling a complete list of Feynman diagrams due to the infinite number of interactions possible for particles.
  • One participant notes that even for a single particle, there can be an infinite sum of higher-order self-energy interactions, leading to an infinite number of corresponding Feynman diagrams.
  • A related inquiry is made about the existence of a list that outlines pathways for creating composite and elementary particles, citing a specific example involving proton decay.
  • Another participant asserts that the example provided violates conservation of charge, suggesting a need for caution in the formulation of such interactions.

Areas of Agreement / Disagreement

Participants express differing views on the possibility of creating a complete list of Feynman diagrams, with some emphasizing the infinite nature of interactions while others focus on specific examples of particle interactions. The discussion remains unresolved regarding the existence of such lists.

Contextual Notes

Participants highlight limitations in the discussion, including the dependence on definitions of interactions and the implications of conservation laws in particle physics.

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Is there an on-line list of all possible Feynman diagrams for all the known particles?
 
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friend said:
Is there an on-line list of all possible Feynman diagrams for all the known particles?

There are an infinite number of interactions, so how can there be such a list? Even for ONE, particle, there can be an infinite sum of higher-order self-energy interactions, meaning you have an infinite number of Feynman diagrams representing each term.

This is a puzzling question.

Zz.
 
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ZapperZ said:
There are an infinite number of interactions, so how can there be such a list? Even for ONE, particle, there can be an infinite sum of higher-order self-energy interactions, meaning you have an infinite number of Feynman diagrams representing each term.

This is a puzzling question.

Zz.
Similar question,
Is there a list, taking the known elementary particles and know Forces showing the know pathways of making composite and elementary particles?
for example. p -> n + e- + electron neutrino by a W+.
 
BasicMinus said:
Similar question,
Is there a list, taking the known elementary particles and know Forces showing the know pathways of making composite and elementary particles?
for example. p -> n + e- + electron neutrino by a W+.

Actually, no, this is not a similar question. You need to post this in the high-energy physics forum.

BTW, p -> n + e- + ν violates conservation of charge.

Zz.
 

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