Observable detail · FORWARD
Euclid 2027–2029 lensing (forward)
| Prediction / mechanism | Forward; Euclid will resolve the canonical \(M_{\rm lens}/M_{\rm dyn}(z\!\sim\!1.5) = 1.30\) turnover, the discriminating signature of the perturbation-level programme. |
|---|---|
| Measured | Euclid first-light February 2024; first cosmology release expected 2027. |
| Residual / status | OPEN / FORWARD — discriminating prediction |
| Status | OPEN |
| Source paper | DCT-BAO-01 |
Mechanism
Perturbation-kernel \(\Sigma(a) = 1/\bar P\), \(\mu_{DM}(a) = 1/[P(1+\beta)]\) generates the turnover at \(z \sim 1.5\).
Derivation
The derivation chain follows the cluster paper DCT-BAO-01 and reduces to the canonical DCT constants (\(P_0 = 0.851\), \(\omega_0 = 50{,}037\), \(c_{BD} = 138{,}189\), master identity \(2\omega_0 + 3 = c_{BD} \cdot P_0^2 = 100{,}077\)). See the cluster paper for the full multi-line derivation.
Methodology
| Domain | Forward experiment (FORWARD) |
|---|---|
| Input data source | See "References" below for the canonical public-archive citation. |
| Measurement procedure | The measured value used here is the most recent peer-reviewed central value plus 1σ uncertainty from the cited reference. |
| Acceptance threshold | HIT: residual within 1σ of measurement. SOFT: directional agreement 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 verdict pill above. |
Python verification
Verification script: cosmology_tests.py. Run with python3 cosmology_tests.py to reproduce the canonical DCT result against the public-archive measurement source listed below.
Cross-references
Related observables: m-lens-m-dyn · desi-y3-bao · rubin-y1-shear.
Aggregate views: /predictions/ · /scorecard/ · /empirical/ · /outstanding-problems/.
Audit notes
This sub-page is part of the post-build-out of the observable archive (see the observable index). Verdict reflects the corpus-canonical (constant-\(P_0\)) treatment. The cluster-paper deep-link above (DCT-BAO-01) is the canonical source of the derivation chain.
References
- Euclid Consortium 2024+
- Source paper: DCT-BAO-01
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