{"id":"W2063475873","doi":"10.1119/1.3488986","title":"When action is not least for orbits in general relativity","year":2010,"lang":"en","type":"article","venue":"American Journal of Physics","topic":"Quantum chaos and dynamical systems","field":"Physics and Astronomy","cited_by":6,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Guelph","funders":"Natural Sciences and Engineering Research Council of Canada","keywords":"Physics; Classical mechanics; Spacetime; Action (physics); Focus (optics); Saddle point; Theory of relativity; Kinetic energy; Newtonian fluid; General relativity; Schwarzschild radius; Event (particle physics); Geometry; Gravitation; Quantum mechanics; Mathematics","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":[0.0005674755,0.0003740369,0.0004881681,0.0006527923,0.001424543,0.001227127,0.0004722202,0.0009046764,0.003953435],"category_scores_gemma":[0.001477415,0.0002153688,0.0003645579,0.0003242237,0.002537514,0.003049371,0.00115612,0.001081123,0.000626915],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.001068851,"about_ca_system_score_gemma":0.0005415332,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.001178418,"about_ca_topic_score_gemma":0.001005707,"domain_scores_codex":[0.9997734,0.00003778698,0.00001365747,0.00006550554,0.00006120952,0.00004834892],"domain_scores_gemma":[0.9996414,0.00006738351,0.00005559741,0.0001022992,0.00006211841,0.00007119411],"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":[0.00002075159,0.000004126936,0.0002267227,0.00002847008,0.000006881098,0.00005926813,0.0002356023,0.001036414,0.00201047,0.9901977,0.001030471,0.005143079],"study_design_scores_gemma":[0.00001302892,0.00002820511,0.0006543667,0.00001326288,0.000006827159,0.0001433895,0.00008776037,0.004409888,0.000911229,0.987093,0.006628593,0.00001030216],"study_design_candidate":"theoretical_or_conceptual","study_design_consensus":"theoretical_or_conceptual","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.5804823,0.003951043,0.1829208,0.008301059,0.000519008,0.00005518258,0.0003871847,0.001386148,0.2219973],"genre_scores_gemma":[0.9754359,0.0003995915,0.01337235,0.0002588432,0.0001553918,0.00003893425,0.0001443807,0.0001177954,0.01007688],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.003953435,"threshold_uncertainty_score":0.01322556,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01743142141001076,"score_gpt":0.2837961709972694,"score_spread":0.2663647495872587,"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."}}