for a divergent series i can write an expression in the form:(adsbygoogle = window.adsbygoogle || []).push({});

[tex]\int_{R}dxC(x)w(x)e^{-ax} [/tex]

where a is a divegent quantity in the form [tex]a=ln\epsilon[/tex]

the qeustion is how i would apply renormalization?..in fact if we apply functional differentiation respect to e^{-ax} we get

[tex]C(x)w(x) [/tex] the divergent term magically disappears

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# Help with renormalization

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