Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Volume -, Issue 7, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2010/07/015
Keywords
inflation; non-gaussianity; quantum field theory on curved space; cosmological perturbation theory
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A simple set of diagrammatic rules is formulated for perturbative evaluation of in-in correlators, as is needed in cosmology and other nonequilibrium problems. These rules are both intuitive, and efficient for calculational purposes.
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