Undergrad Complete list of Feynman diagrams

Click For Summary
SUMMARY

The discussion centers around the impossibility of compiling a complete list of Feynman diagrams for all known particles due to the infinite nature of interactions. Each particle can have an infinite series of higher-order self-energy interactions, resulting in an unbounded number of Feynman diagrams. Additionally, the conversation touches on the pathways for creating composite and elementary particles, highlighting the need for clarity in questions posed within the context of high-energy physics.

PREREQUISITES
  • Understanding of Feynman diagrams and their role in quantum field theory.
  • Knowledge of elementary particles and their interactions.
  • Familiarity with concepts of conservation laws in particle physics.
  • Basic grasp of high-energy physics terminology.
NEXT STEPS
  • Research the principles of quantum field theory and its application to Feynman diagrams.
  • Explore the concept of higher-order self-energy interactions in particle physics.
  • Study conservation laws, particularly charge conservation, in particle interactions.
  • Investigate resources in high-energy physics forums for advanced discussions on particle interactions.
USEFUL FOR

Physicists, students of quantum mechanics, and anyone interested in the complexities of particle interactions and Feynman diagrams.

friend
Messages
1,448
Reaction score
9
Is there an on-line list of all possible Feynman diagrams for all the known particles?
 
Physics news on Phys.org
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.
 
  • Like
Likes weirdoguy, vanhees71 and Vanadium 50
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.
 

Thread 'Two equivalent statements of time reversal symmetric Hamiltonian'

Time reversal invariant Hamiltonians must satisfy ##[H,\Theta]=0## where ##\Theta## is time reversal operator. However, in some texts (for example see Many-body Quantum Theory in Condensed Matter Physics an introduction, HENRIK BRUUS and KARSTEN FLENSBERG, Corrected version: 14 January 2016, section 7.1.4) the time reversal invariant condition is introduced as ##H=H^*##. How these two conditions are identical?
View full post »

Similar threads

Undergrad Your Favorite Feynman Diagram?
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad What is the probability of an electron emitting a photon?
  • · Replies 14 ·
Replies
14
Views
2K
Undergrad What Insights Can the Feynman Diagram of γ+γ→γ+γ Provide?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Feynman diagrams and sum over paths
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Feynman diagram for bound particle output
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Feynman loop diagrams and Dyson series for anomalous magnetic moment
  • · Replies 80 ·
3
Replies
80
Views
5K
Undergrad Building a List of Feynman Diagrams
  • · Replies 3 ·
Replies
3
Views
3K
Graduate QM is Feynman path ensemble - is QFT Feynman field ensemble?
  • · Replies 89 ·
3
Replies
89
Views
6K
Undergrad Feynman discussion of electron diffraction
  • · Replies 23 ·
Replies
23
Views
2K
Graduate How to know the number of Feynman diagrams for a given order?
  • · Replies 0 ·
Replies
0
Views
1K