Scalar QED, are there any scalar-fermion vertices in this theory?
Answers
Answered by
0
Consider QED with an additional charged (complex) scalar field, ϕϕ:
L=−14FμνFμν+(Dμϕ)∗(Dμϕ)−μ2ϕ∗ϕ−ψ¯¯¯(iD−m)ψ.L=−14FμνFμν+(Dμϕ)∗(Dμϕ)−μ2ϕ∗ϕ−ψ¯(iD−m)ψ.
I know what the Feynman rules are for this theory and can derive them. My question is, though, are there any scalar-fermion vertices in this theory?
L=−14FμνFμν+(Dμϕ)∗(Dμϕ)−μ2ϕ∗ϕ−ψ¯¯¯(iD−m)ψ.L=−14FμνFμν+(Dμϕ)∗(Dμϕ)−μ2ϕ∗ϕ−ψ¯(iD−m)ψ.
I know what the Feynman rules are for this theory and can derive them. My question is, though, are there any scalar-fermion vertices in this theory?
Similar questions