The four-point correlation function of graviton during inflation
High Energy Physics - Theory
2015-07-07 v2 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
We expand the Einstein-Hilbert action with a positive cosmological constant up to the fourth order in terms of gravity fluctuations, and then use the in-in formalism to calculate the four-point correlation function for gravitational waves, including both contact and exchange diagrams, generated during a period of exactly de Sitter expansion. In addition, we also present the general properties of the -point function of graviton in terms of both circularly and linearly polarized states.
Cite
@article{arxiv.1502.02329,
title = {The four-point correlation function of graviton during inflation},
author = {Tian-Fu Fu and Qing-Guo Huang},
journal= {arXiv preprint arXiv:1502.02329},
year = {2015}
}
Comments
21 pages, 7 figures; v2: minor revised, version accepted for publication in JHEP