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Results tagged with feynman-diagrams
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user 89707
A diagrammatic technique introduced by Richard Feynman to describe the quantum behaviour of subatomic particles and their interactions. Do not use for general questions on diagrams that are not of the Feynman kind.
8
votes
1
answer
721
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Is the reduction of tensor loop integrals to scalar integrals using Passarino-Veltman Functi...
While reducing the tensor integrals to scalar integrals all that we use are Lorentz covariance and the physical interpretation of the result. Thus I think that the Pa-Ve Reduction of Tensor integrals …
- 541
1
vote
Is the reduction of tensor loop integrals to scalar integrals using Passarino-Veltman Functi...
I don't know if this is weird or not to answer one's own question but here it goes: the Passarino-Veltmann Decomposition aims at expressing the tensor loop integral using the Lorentz covariant quantit …
- 541
4
votes
1
answer
1k
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What does "$n$-particle reducible diagram" mean?
I am reading Ramond and in page 112 he says "In $\lambda \phi^{4}$ theory, diagrams can be at most three-particle reducible". My question:
whether the individual Feynman Diagrams are treated as part …
- 541