On finding gravitational waves from anisotropies of the Cosmic Microwave Background
General Relativity and Quantum Cosmology
2025-10-29 v1 Analysis of PDEs
Abstract
The integrated Sachs-Wolfe (ISW) effect describes how photons are gravitationally redshifted, producing anisotropies in the Cosmic Microwave Background. We study the inverse problem and show that primordial gravitational perturbations, in particular their polarizations in the transversally traceless (TT) gauge can be identified from the local observation of the ISW effect.
Keywords
Cite
@article{arxiv.2510.24005,
title = {On finding gravitational waves from anisotropies of the Cosmic Microwave Background},
author = {Yiran Wang},
journal= {arXiv preprint arXiv:2510.24005},
year = {2025}
}