Bounce Cosmology Portfolio · 4 Channels
Predictions
Each prediction is a distinct observational channel for testing bounce cosmology against inflation. Click any to see connected surveys, papers, and next steps.
Observational Channels
The decisive bounce-vs-inflation discriminator. The matter bounce predicts fNL = -35/8 = -4.375, parameter-free and mechanism-independent across all matter bounce variants. Inflation predicts |fNL| < 1. One measurement…
Axion-like particle field evolution through the bounce predicts a specific CMB polarization rotation angle β = 0.27°. The observed Eskilt 2023 combined measurement is β = 0.342° ± 0.094° (3.6σ) — consistent at 0.8σ.
The matter bounce predicts an induced gravitational wave spectral index γ = 3.0 from primordial perturbation growth during contraction. The R42 Wave 13 emcee run on the real NANOGrav 15-yr HD-correlated KDE free-spectrum…
The quintom bounce unifies the bounce with dark energy through phantom fields. It predicts the dark energy equation of state w(z) crosses −1 (quintom-B behavior). The DESI DR2 BAO + supernova combination from external gr…