Primordial gravitational waves are predicted by 'slow roll' models of cosmic inflation.
Notes on verification
Confirmed by multiple independent peer-reviewed/preprint sources including LiteBIRD collaboration and CMB prospects papers, consistent with established theoretical cosmology. [tier=unverified indep_score=0.5 clusters=1 claim_tier=notable] [kind-backfill 2026-09-15: kind=empirical eligibility=high] [harvest 2026-09-23: +3 source(s) on new hosts; tier unverified->gold indep=1.0 clusters=4]
Sources
- BICEP and Keck Array (wikipedia)
- https://arxiv.org/pdf/2202.02773 (corroboration)
- https://arxiv.org/pdf/1802.04753 (corroboration)
- https://arxiv.org/pdf/1406.1369 (corroboration)
- https://ntrs.nasa.gov/api/citations/20170011095/downloads/20170011095.pdf (corroboration)
- https://www.caltech.edu/about/news/bicep2-discovers-first-direct-evidence-inflation-and-primordial-gravitational-waves-42305 (corroboration)
- https://physicstoday.aip.org/news/polarization-measurement-detects-primordial-gravitational-waves (corroboration)