Common integrals in quantum field theory: Difference between revisions

Revision as of 16:42, 18 April 2016

Revision as of 10:14, 29 September 2016

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====Integrals with a complex quadratic term====

:<math>\int \exp\left(-\frac{i}{2} x \cdot A \cdot x +iJ \cdot x \right) d^nx =\sqrt{\frac{(2\pi i)^n}{\det A}} \exp \left( -{i\over 2} J \cdot A^{-1} \cdot J \right)</math>

===Integrals with differential operators in the argument===