if we consider the propagators and other Fourier integrals in the sense of 'distribution' then are all the divergences that appear in QFT (quantum field theory) due to the divergent quantities(adsbygoogle = window.adsbygoogle || []).push({});

[tex] \delta ^{k} (0) [/tex]

that is my idea, all the divergences appear because in the commutation relations

[tex] [\Psi (x) , \Psi (y) ] = \delta (x-y) [/tex]

appear the dirac delta function an its derivatives, or in the mathematical sense all the divergencies are proportional to the 'value'

[tex] \delta ^{k} (0) [/tex] , here 'k' means the k-th derivative of the delta function

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# Divergences in the sense of QFT

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