4 Diagrams in Momentum Space 4.1 Fourier Transformation
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چکیده
At the end of Section 2.3, we have observed that all correlation functions of the local field theory under consideration are invariant under spatial translations. This invariance has the consequence that Feynman integrals are greatly simplified by Fourier transformation. It is therefore useful to set up rules for composing Feynman integrals directly in momentum space.
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تاریخ انتشار 2009