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Add gravity-only attribution for rotating higher-index gain

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Emily Boudreaux
2026-09-19 16:01:29 -04:00
parent 2aabfc4d35
commit 38c7184b5c
2 changed files with 42 additions and 0 deletions
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10
experiments/COUPLED_CONVERGENCE_STUDY_2026-09-19.md
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@@ -220,6 +220,16 @@ fresh baseline. No additional raw trial grid is needed for this attribution.
The isolated branch is `research/n3-linear-ablation-20260919`, with case The isolated branch is `research/n3-linear-ablation-20260919`, with case
manifest `convergence_linear_followup_cases_2026-09-19.json`. manifest `convergence_linear_followup_cases_2026-09-19.json`.
The completed n=1.5,J=.1 frozen pair subsequently gives the first clear
combined-candidate total-cost improvement: 246 to 95 iterations and 117.925
to 101.760 setup/solve/check seconds, with both eta=.003 gates passing and
the same largest sampled acceptable alpha=1/16. Add its matched gravity-only
control to the same follow-up manifest before attributing this 13.71% time
reduction to the new surface block. This two-case attribution hypothesis is
isolated on `research/gravity-coupling-ablation-20260919`; the original n=3
specification branch is retained. These controls add no new nonlinear runs
or trial grids.
## Completed matched gravity-path test ## Completed matched gravity-path test
The retained-artifact audit passes both six-update restarts. Both begin at The retained-artifact audit passes both six-update restarts. Both begin at

32
experiments/convergence_linear_followup_cases_2026-09-19.json
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@@ -29,5 +29,37 @@
"../../diagnostics/coupled_convergence_2026-09-19/screen_v1/n3_J0_control/capture_7/physical_base.txt", "../../diagnostics/coupled_convergence_2026-09-19/screen_v1/n3_J0_control/capture_7/physical_base.txt",
"--allow-unconverged-restart" "--allow-unconverged-restart"
] ]
},
{
"id": "n1p5_rotating_late_gravity",
"arguments": [
"--index",
"1.5",
"--angular-momentum",
"0.1",
"--surface-prescription",
"harmonics",
"--surface-degree",
"4",
"--restart",
"160",
"--max-linear",
"300",
"--rtol",
"0",
"--atol",
"1e-12",
"--max-newton",
"0",
"--linear-tol",
".003",
"--preconditioner-probe",
"--preconditioner-variant",
"gravity-schur",
"--restart-snapshot",
"../../diagnostics/coupled_convergence_2026-09-19/screen_v1/n1p5_J0p1/accepted_state.txt",
"--allow-unconverged-restart",
"--no-central"
]
} }
] ]