{"artifact_id":"L1-367","layer":"L1","title":"CMB Gravitational Lensing Reconstruction","domain":"Astrophysics","sub_domain":"CMB lensing","physics_fingerprint":{"L_DAG":3.5,"title":"CMB Gravitational Lensing Reconstruction","domain":"Astrophysics","carrier":"photon","primitives":["F.fourier.harmonic","S.quadratic.estimator","K.filter"],"sub_domain":"CMB lensing","noise_model":"thermal_gaussian","problem_class":"nonlinear_inverse","solution_space":"2D_lensing_convergence","difficulty_delta":5,"integration_axis":"angular_multipole","sensing_mechanism":"quadratic_lensing_estimator"},"observable_profile":{"metric":"lensing_power_spectrum_C_kk_chi2","regime":"Existence of the recovered 2D_lensing_convergence is guaranteed within the declared Omega bounds. Uniqueness holds on the measurement-supported subspace; out-of-support modes are controlled by declared priors. Stability is conditionally stable (kappa_eff ~= 500); foreground_bias dominates the stability cliff; the remaining mismatch parameters contribute higher-order bias terms. Thermal gaussian sets the irreducible data-fidelity floor.","secondary":"reconstruction_SNR"},"size_tiers":{"center_spec":{"omega":{"N_pix_side":2048,"noise_uK_arcmin":5.0,"beam_FWHM_arcmin":1.5,"survey_area_deg2":10000},"input_format":"measurement_only","problem_class":"nonlinear_inverse","forward_operator":"quadratic_lensing_estimator","epsilon_fn_center":"1.05 lensing_power_spectrum_C_kk_chi2"},"omega_bounds":{"N_pix_side":[512,8192],"noise_uK_arcmin":[1.0,50.0],"beam_FWHM_arcmin":[0.5,10.0],"survey_area_deg2":[1000,40000]},"epsilon_bounds":{"lensing_power_spectrum_C_kk_chi2":[0.9,2.0]},"allowed_problem_classes":["nonlinear_inverse"],"allowed_omega_dimensions":["N_pix_side","noise_uK_arcmin","beam_FWHM_arcmin","survey_area_deg2"],"allowed_forward_operators":["quadratic_lensing_estimator"]},"hardness_fn":{"type":"epsilon_fn","delta":5,"kappa":100000.0,"metric":"lensing_power_spectrum_C_kk_chi2"},"initiator_dataset":[{"name":"primary","weight":1.0,"ipfs_cid":null,"license_hash":null}],"status":"testnet","staked_pwm":0.0,"chain_hash":"0x3deb3f685300556ed7f8cfc9ca10983f283197b819c691782086109f0fe9ea25","chain_tx_hash":"0x759b9b0c9a8be2cf518b8a556f4d52b15ebd637238c7d290b7513bcc4b6743d8","chain_block":41555176}