Aspects of Quantum Modes on de Sitter Spacetime

摘要

General aspects of the quantum modes functions of the scalar fields on de Sitter spacetime are reviewed. Spherical eigenfunctions of a Hamiltonian operator, found using a special technique that involves time evolution pictures are discussed on the spatially flat FLRW chart. A concise background on de Sitter spacetime is provided, together with an argument on what coordinate charts are the most suitable for the endeavor of determining the quantum modes, as a first step in constructing a quantum field theory on this curved background.