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'''Common integrals in quantum field theory''' are all variations and generalizations of [[Gaussian integral|Gaussian integrals]] to the [[complex plane]] and to multiple dimensions.<ref name="Zee">{{cite book|author=A. Zee|title=Quantum Field Theory in a Nutshell|publisher=Princeton University|year=2003|isbn=0-691-01019-6}}</ref>{{rp|pp=13–15}} Other integrals can be approximated by versions of the Gaussian integral. Fourier integrals are also considered.
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