{"id":"W2222848970","doi":"10.1103/physrevd.93.064048","title":"Head-on collision of ultrarelativistic particles in ghost-free theories of gravity","year":2016,"lang":"en","type":"article","venue":"Physical review. D/Physical review. D.","topic":"Cosmology and Gravitation Theories","field":"Physics and Astronomy","cited_by":113,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Alberta","funders":"Natural Sciences and Engineering Research Council of Canada","keywords":"Physics; Schwarzschild radius; Horizon; Square (algebra); Gravitation; Mathematical physics; Gravitational field; Schwarzschild metric; Black hole (networking); Strong gravity; Classical mechanics; General relativity; Geometry","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":[0.0005180778,0.0002316588,0.0005254028,0.0002898625,0.0006072497,0.0005674163,0.001256555,0.0007124331,0.001152675],"category_scores_gemma":[0.0007408286,0.0002051183,0.0006476448,0.0002388615,0.001337494,0.001302218,0.001106446,0.0007896203,0.0001389629],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0009481772,"about_ca_system_score_gemma":0.0007503837,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.001816876,"about_ca_topic_score_gemma":0.001620902,"domain_scores_codex":[0.9997849,0.00009212011,0.000008306972,0.000020902,0.00005402752,0.00003974256],"domain_scores_gemma":[0.9997161,0.00007611104,0.00006464415,0.00004131812,0.00003121105,0.00007059174],"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":[0.00006229936,0.00005342251,0.001286323,0.0001297586,0.00005691875,0.000552086,0.0005937858,0.02324537,0.003135011,0.9657272,0.0008371922,0.004320484],"study_design_scores_gemma":[0.0001613171,0.0002198728,0.003516493,0.000044146,0.00006606894,0.0007364245,0.0005677058,0.1482515,0.002451727,0.8302693,0.01363122,0.000084327],"study_design_candidate":"theoretical_or_conceptual","study_design_consensus":"theoretical_or_conceptual","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9095193,0.006873436,0.05802251,0.002278261,0.0002662661,0.00003945241,0.00005579283,0.00009418924,0.02285087],"genre_scores_gemma":[0.9851838,0.002213218,0.007326139,0.000273456,0.00007444923,0.000024111,0.00005362944,0.00002319615,0.004827927],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.001816876,"threshold_uncertainty_score":0.006879508,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01371821375900928,"score_gpt":0.4102947402524899,"score_spread":0.3965765264934806,"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."}}