Perturbative Quantum Gravity on de Sitter Spacetime

摘要

We will analyse perturbative quantum gravity on de Sitter spacetime. We propose a new type of inner product for modes on de Sitter spacetime. This inner product is used to mode decompose perturbations of the metric on de Sitter spacetime. Using this inner product, it is possible to calculate the two-point function for perturbative quantum gravity on de Sitter spacetime. This two-point function will be written in terms of a mode sum for various modes on de Sitter spacetime.