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I'm writing my QFT exam tomorrow and I know that there will be a self energy calculation. Since I am not that familiar with it, because we didn't do any self energy calculations in the exercises so far, I would like to do some simple calculations.

I think the electron self energy, the vacuum polarization and the vertex correction are too difficult for an exam. I already found the easiest example for Phi^3 theory and I think something like this could come in the exam:

-----( )---------- (1 Bubble)

The calculation was not too difficult.

Do you guys know any other simple selfenergy calculation? I would like to be prepared as good as possible for tomorrow :)

Thank you!

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# Looking for simple self energy calculations

Can you offer guidance or do you also need help?

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