Observable detail · COSMOLOGY
w_0
dark-energy equation of state at z=0
| Prediction | −1.00 |
|---|---|
| Measured | −1.00 (DESI central) |
| Residual | match |
| Status | hit |
| Source paper | DCT-COS-01 |
Mechanism
DCT cosmology reproduces ΛCDM in the constant-P branch. w_0 = −1 follows from the static cosmological-term contribution of the tie field at the equilibrium amplitude P_0.
Derivation
DCT cosmology reproduces ΛCDM in the constant-P branch. w_0 = −1 follows from the static cosmological-term contribution of the tie field at the equilibrium amplitude P_0.
The closed-form prediction is
$$ \text{predicted} = −1.00 $$against the measurement −1.00 (DESI central), giving residual match.
Python verification
The verification script for this observable is pantheon_supernova_analysis.py. Run it with python3 pantheon_supernova_analysis.py to reproduce the canonical DCT result against the public-archive measurement source listed above (DESI Y1 BAO + Pantheon+; Brout 2022.).
Methodology
| Domain | Cosmology (COS) |
|---|---|
| Input data source | See "References" below for the canonical public-archive citation. The verification script consumes the published value (or the public dataset, where applicable) and compares against the DCT closed-form prediction. |
| Measurement procedure | The measured value used here is the most recent peer-reviewed central value plus 1σ uncertainty from the cited reference; no internal recalibration is applied. |
| Acceptance threshold | HIT: residual within 1σ of measurement. SOFT: directional agreement, residual within bracketing range. OPEN: untested or unresolved. |
| Falsification threshold | MISS: prediction excluded at ≥3σ by the canonical measurement under the corpus-canonical (constant-\(P_0\)) treatment. |
| Current status | See the verdict pill in the prediction table above. |
Cross-references
Related observables in the same domain: w-a · pantheon-supernovae.
Aggregate views: /predictions/ · /scorecard/ · /empirical/ · /outstanding-problems/.
Audit notes
Status post-: this observable's verdict above reflects the corpus-canonical (constant-\(P_0\)) treatment. Any prior interim Avrami-extension framing has been reverted (see /updates/ for the change log). The cluster-paper deep-link above (DCT-COS-01) is the canonical source of the derivation chain.
References
- DESI Collaboration 2024
- Brout et al. 2022 (Pantheon+)
- Source paper: DCT-COS-01
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