Observable detail · COSMOLOGY
Cosmic chronometer H(z)
| Prediction | Identical to ΛCDM in SPS frame |
|---|---|
| Measured | Moresco compilation |
| Residual | χ²/N = 0.466 |
| Status | hit |
| Source paper | DCT-COS-01 |
Mechanism
Stationary-Pulsar-Spectroscopy (SPS) frame: the local clock rate is set by the cumulative condensate density along the photon path. In the SPS frame H(z) reduces to ΛCDM at the resolution of cosmic chronometers.
Derivation
Stationary-Pulsar-Spectroscopy (SPS) frame: the local clock rate is set by the cumulative condensate density along the photon path. In the SPS frame H(z) reduces to ΛCDM at the resolution of cosmic chronometers.
The closed-form prediction is
$$ \text{predicted} = Identical to ΛCDM in SPS frame $$against the measurement Moresco compilation, giving residual χ²/N = 0.466.
Python verification
The verification script for this observable is cosmology_tests.py. Run it with python3 cosmology_tests.py to reproduce the canonical DCT result against the public-archive measurement source listed above (Moresco cosmic-chronometer compilation.).
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: sh0es-h0 · h-phys.
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
- Moresco compilation
- Source paper: DCT-COS-01
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