The graviton four-point function in de Sitter space
James Bonifacio, Harry Goodhew, Austin Joyce, Enrico Pajer, David Stefanyszyn
Abstract
A bstract We compute the tree-level late-time graviton four-point correlation function, and the related quartic wavefunction coefficient, for Einstein gravity in de Sitter spacetime. We derive this result in several ways: by direct calculation, using the in-in formalism and the wavefunction of the universe; by a heuristic derivation leveraging the flat space wave-function coefficient; and by using the boostless cosmological bootstrap, in particular the combination of the cosmological optical theorem, the amplitude limit, and the manifestly local test. We find agreement among the different methods.
Topics & Concepts
PhysicsGravitonDe Sitter universeDe Sitter spaceMathematical physicsQuartic functionWave functionde Sitter invariant special relativitySpacetimeCosmic microwave backgroundAnti-de Sitter spaceTheoretical physicsQuantum mechanicsUniverseGravitationAnisotropyMathematicsPure mathematicsBlack Holes and Theoretical PhysicsCosmology and Gravitation TheoriesNoncommutative and Quantum Gravity Theories