KLT-Like Behaviour of Inflationary Graviton Correlators
High Energy Physics - Theory
2018-12-18 v2 Cosmology and Nongalactic Astrophysics
Abstract
We use the spinor helicity formalism to study KLT-like relations for the inflationary graviton four-point correlation function. New features are observed in this correlation function compared to the graviton scattering amplitude in flat spacetime. After obtaining the general momentum dependence, collinear, squeezed and collapsed limits are considered to further study the features of the correlation function, and the relation to the corresponding flat space scattering amplitude.
Keywords
Cite
@article{arxiv.1806.06242,
title = {KLT-Like Behaviour of Inflationary Graviton Correlators},
author = {Shing Yan Li and Yi Wang and Siyi Zhou},
journal= {arXiv preprint arXiv:1806.06242},
year = {2018}
}
Comments
18 pages, 3 figures