A Tree Theorem for Inflation
Abstract
Description
It is shown that the generating function for tree graphs in the "in-in" formalism may be calculated by solving the classical equations of motion subject to certain constraints. This theorem is illustrated by application to the evolution of a single inflaton field in a Robertson--Walker background.
Version accepted for publication in Phys. Rev. D. 22 pages. Some changes to references and clarification in Introduction
Version accepted for publication in Phys. Rev. D. 22 pages. Some changes to references and clarification in Introduction