What is a branch cut singularity in QFT?
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Hey mate ^_^
The poles in p^2 come only from one-particle intermediate states, while multi-particle intermediate states give weaker branch cut singularities....
#Be Brainly❤️
The poles in p^2 come only from one-particle intermediate states, while multi-particle intermediate states give weaker branch cut singularities....
#Be Brainly❤️
Answered by
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Hello mate here is your answer.
The branch point or branch point singularity is at the point of the multi-valued function where the arbitrarily small loop monodromy is nontrivial. Because of the multi-valuedness, there has to be a branch cut (=branch cut singularity) coming from the branch point on which the function jumps from one value to another. Around branch points, the function is continuous but it's still "singular" according to physics jargon - it can't be Taylor-expand.
Hope it helps you.
The branch point or branch point singularity is at the point of the multi-valued function where the arbitrarily small loop monodromy is nontrivial. Because of the multi-valuedness, there has to be a branch cut (=branch cut singularity) coming from the branch point on which the function jumps from one value to another. Around branch points, the function is continuous but it's still "singular" according to physics jargon - it can't be Taylor-expand.
Hope it helps you.
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