Question

What to do when finite counterterms are undetermined?

Answer 1

introducing such a regulator we can extract the divergent terms in a diagram and split them from its finite parts. Divergences in φn theory.

Answer 2

$\color{Black}{ \boxed{\bold{ \underline{Hii. Frd .Your .Answer}}}}$

$<b>$

❇${\mathbb{CORRECT...ANSWER}}$

✔Suppose I have some theory of "new physics" which involves interaction of some gauge boson with Standard model.

For this theory I have some loop-mediated process with this new gauge boson whose matrix element contains logarithmic divergence.

⭐I can introduce new vertex which calcels this divergence.

$\color{orange}{ \boxed{\bold{ \underline{ i .Hope .Help .You .jiiii}}}}$