Results
This section presents the results of the final Protocol 1b run — ΛCDM, CPL and Ξosc fitted to Pantheon+SH0ES + DESI DR2 BAO. All numbers on these pages are read from the exported result files; the older Pantheon-only Protocol 1 is shown only through its figures (Corner Plots).
ProtocolProtocol 1b — Pantheon+SH0ES + DESI DR2 BAO
Data1,590 SNe (z > 0.01) + 13 BAO · N = 1,603
Sampleremcee · 100,000 steps × 96 walkers · burn-in 20,000
Fixedr_d = 147.09 Mpc
Statusv0.1.0 exploratory
Exploratory
v0.1.0 results. Read them together with Known Limitations.
Key results
18.3
ΔAIC of ΛCDM
vs CPL (lowest AIC) · N = 1,603
1.94
ΔAIC of Ξosc
vs CPL · χ² lowest: Ξosc
0.185
Oscillation amplitude ε
+0.077 −0.087 · prior 0 < ε < 0.3
2.26σ
ε / σ_ε (symmetrised)
descriptive ratio, not a detection
Model comparison
| Model | χ² | k | AIC | BIC | ΔAIC |
|---|---|---|---|---|---|
| CPL | 1531.824 | 4 | 1539.824 | 1561.343 | 0.000 |
| Ξosc | 1529.763 | 6 | 1541.763 | 1574.041 | 1.939 |
| ΛCDM | 1554.165 | 2 | 1558.165 | 1568.924 | 18.341 |
Ranking, definitions and limits: Model Comparison.
