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arXiv:2407.02714astro-ph.CO

Primordial Gravitational Waves 2024

Deng Wang

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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.

arXiv comments
Major revision. Replacement due to numerical bugs found in codes. Conclusion changed. Only a strong upper bound on r is given
Journal reference
DOI
Subjects
astro-ph.COCosmology and Nongalactic Astrophysics gr-qcGeneral Relativity and Quantum Cosmology hep-phHigh Energy Physics, Phenomenology hep-thHigh Energy Physics, Theory

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