Primordial Gravitational Waves 2024
Cosmology and Nongalactic Astrophysics
2024-07-30 v2 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
Primordial gravitational waves have crucial implications for the origin of the universe and fundamental physics. Using currently available cosmic microwave background data from Planck, ACT and SPT separately or their combinations with BK18 B-mode polarization and DESI observations, we give the strongest constraints on primordial gravitational waves so far.
Keywords
Cite
@article{arxiv.2407.02714,
title = {Primordial Gravitational Waves 2024},
author = {Deng Wang},
journal= {arXiv preprint arXiv:2407.02714},
year = {2024}
}
Comments
Major revision. Replacement due to numerical bugs found in codes. Conclusion changed. Only a strong upper bound on r is given