{"artifact_id":"L1-353","layer":"L1","title":"Hall MHD — ion-scale physics in reconnection","domain":"Plasma Physics","sub_domain":"Hall term in resistive MHD (ion inertial scale)","physics_fingerprint":{"L_DAG":3.5,"title":"Hall MHD — ion-scale physics in reconnection","domain":"Plasma Physics","carrier":"plasma","primitives":["L.hall_term","L.ion_inertia","L.electron_MHD","int.temporal"],"sub_domain":"Hall term in resistive MHD (ion inertial scale)","noise_model":"gaussian","problem_class":"nonlinear_inverse","solution_space":"hall_reconnection_structure","difficulty_delta":5,"integration_axis":"temporal","sensing_mechanism":"mms_in_situ_spacecraft"},"observable_profile":{"metric":"PSNR_dB","regime":"Conditional stability; mismatch parameters dominate at Omega bounds.","secondary":"SSIM"},"size_tiers":{"center_spec":{"omega":{"H":256,"W":256,"SNR_dB":25,"N_times":1000,"hall_closure_error":0.0,"finite_larmor_error":0.0,"electron_inertia_error":0.0},"input_format":"measurement_only","problem_class":"hall_mhd","forward_operator":"hall_mhd_forward","epsilon_fn_center":"20.0"},"omega_bounds":{"H":[32,2048],"W":[32,2048],"SNR_dB":[0,40],"N_times":[50,100000],"hall_closure_error":[0.0,0.2],"finite_larmor_error":[0.0,0.3],"electron_inertia_error":[0.0,0.2]},"epsilon_bounds":{"psnr_db":[10.0,45.0]},"allowed_problem_classes":["hall_mhd"],"allowed_omega_dimensions":["H","W","N_times","SNR_dB","hall_closure_error","electron_inertia_error","finite_larmor_error","hall_closure_error","electron_inertia_error","finite_larmor_error"],"allowed_forward_operators":["hall_mhd_forward"]},"hardness_fn":{"type":"epsilon_fn","delta":5,"kappa":600,"metric":"PSNR_dB"},"initiator_dataset":[{"name":"primary","weight":1.0,"ipfs_cid":null,"license_hash":null}],"status":"testnet","staked_pwm":0.0,"chain_hash":"0x9c5e28cf4ff576345291bada12b1a27d4b8fd89e5403760b0798cae94610cf47","chain_tx_hash":"0xa1413b9d7bb4ef3fadf97a2c30c143d9c2fa59bac9c59f4b98c460bb88361160","chain_block":41554096}