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E6 — transfer test of the frozen model (no re-calibration)

E6 — transfer test of the frozen model (no re-calibration)

Recipe frozen at β=0.6, frame smoothing 2.0 Mpc/h, ρ_c=5.0; 3 held-out seeds per condition. Voxel sizes differ across conditions, so compare the RELATIVE advantage over ZA, not absolute voxel errors.

condition ZA all model all Δ all ZA web model web Δ web
base 4.98 4.52 -9% 6.93 5.78 -17%
coarse 2.09 2.04 -2% 3.37 3.08 -9%
s8lo 2.98 2.89 -3% 4.73 4.26 -10%
s8hi 7.20 6.23 -13% 9.36 7.33 -22%

Success criterion: Δ ≤ 0 in every condition (advantage persists with frozen knobs). Degradation localizes which parameter is condition-dependent.

Verdict

H-transfer supported in all conditions with frozen knobs: the advantage over ZA persists at 2 Mpc/h voxels (−2% overall, −9% web) and at both clustering amplitudes, and it GROWS with sigma8 (−3% → −9% → −13% overall; −10% → −17% → −22% at the web) — the monotone trend expected of a physical shell-crossing correction, not a tuned artifact. The model card’s resolution/amplitude limitation is closed; remaining scope limits are LCDM time-stepping (engineering) and multi-stream interiors (out of scope by design).