The Third Structure Function

Abstract

We re-consider the graviton self-energy induced by a loop of massless, minimally coupled scalars on de Sitter background. On flat space background it can be represented as a sum of two tensor differential operators acting on scalar structure functions. On a general background these tensor differential operators can be constructed from the linearized Ricci scalar and the linearized Weyl tensor. However, in cosmology one requires a third contribution which we derive here.

19 pages, 5 Tables , uses LaTeX2e,Version 2 revised for publication with 5 tables and length of 21 pages

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