{"id":"W4408111764","doi":"10.1088/1361-6382/adbc3f","title":"C-metric in a (nut)shell","year":2025,"lang":"en","type":"article","venue":"Classical and Quantum Gravity","topic":"Algebraic and Geometric Analysis","field":"Mathematics","cited_by":2,"is_retracted":false,"has_abstract":true,"ca_institutions":"Perimeter Institute; University of Waterloo","funders":"Engineering and Physical Sciences Research Council; Natural Sciences and Engineering Research Council of Canada","keywords":"Physics; Nut; Metric (unit); Shell (structure); Mathematical physics; Theoretical physics; Composite material","routes":{"ca_aff":true,"ca_fund":true,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0003491682,0.000654579,0.0004428295,0.0008431688,0.0007747388,0.001488184,0.0006158506,0.0006824977,0.004912816],"category_scores_gemma":[0.0008075321,0.0002430317,0.0004324148,0.0003492502,0.001859941,0.001215885,0.001130209,0.000614469,0.0007839234],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0008091034,"about_ca_system_score_gemma":0.0004817827,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.002852103,"about_ca_topic_score_gemma":0.001187348,"domain_scores_codex":[0.999627,0.00006998461,0.00001970282,0.00008055141,0.0001429276,0.00005986523],"domain_scores_gemma":[0.999639,0.00003580518,0.00005768733,0.00005319147,0.0001039117,0.000110419],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"theoretical_or_conceptual","study_design_gemma":"theoretical_or_conceptual","study_design_scores_codex":[0.00002755136,0.0000166778,0.0005829459,0.00004357972,0.00001245401,0.000193882,0.0001342491,0.007167496,0.005210352,0.981883,0.001182434,0.003545391],"study_design_scores_gemma":[0.00002639963,0.0002097229,0.004514173,0.00003363506,0.00002108151,0.000808845,0.0002188017,0.1104921,0.005261943,0.8647765,0.01356714,0.00006975097],"study_design_candidate":"theoretical_or_conceptual","study_design_consensus":"theoretical_or_conceptual","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.7539433,0.001005342,0.1263949,0.0006005255,0.0003247539,0.00005950738,0.000289452,0.0007178187,0.1166644],"genre_scores_gemma":[0.9730392,0.0001882682,0.01353859,0.0001699811,0.00006627354,0.00001763071,0.0001591983,0.0001976356,0.01262333],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.004912816,"threshold_uncertainty_score":0.01643503,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.0244358894498739,"score_gpt":0.3113280828222778,"score_spread":0.2868921933724038,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}