Cosmological diagrammatic rules

Published 18 May 2010 in hep-th, astro-ph.CO, cond-mat.stat-mech, gr-qc, and hep-ph | (1005.3287v1)

Abstract: 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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