# Help with renormalization...

by eljose
Tags: renormalization
 P: 501 for a divergent series i can write an expression in the form: $$\int_{R}dxC(x)w(x)e^{-ax}$$ where a is a divegent quantity in the form $$a=ln\epsilon$$ the qeustion is how i would apply renormalization?..in fact if we apply functional differentiation respect to e^{-ax} we get $$C(x)w(x)$$ the divergent term magically disappears