{"id":"W2146932393","doi":"10.1103/physrevlett.108.113002","title":"Trapped Antihydrogen in Its Ground State","year":2012,"lang":"en","type":"article","venue":"Physical Review Letters","topic":"Atomic and Molecular Physics","field":"Physics and Astronomy","cited_by":199,"is_retracted":false,"has_abstract":true,"ca_institutions":"York University","funders":"Air Force Office of Scientific Research; National Science Foundation","keywords":"Antihydrogen; Antiproton; Ground state; Atomic physics; Physics; Laser cooling; Trap (plumbing); Trapping; Nuclear physics; Penning trap; Positron; Laser; Antimatter; Proton; Electron; Quantum mechanics","routes":{"ca_aff":true,"ca_fund":false,"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":[0.0002489202,0.0001634978,0.0002130919,0.0001501553,0.0005259144,0.0006488443,0.0003931185,0.0003128368,0.005667669],"category_scores_gemma":[0.0002185013,0.0001804881,0.00008963112,0.0001521467,0.0004408216,0.0006062077,0.0003848778,0.0003075577,0.0007534598],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0003321264,"about_ca_system_score_gemma":0.0002467242,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0006923536,"about_ca_topic_score_gemma":0.001172791,"domain_scores_codex":[0.9998932,0.00001285291,0.000002846086,0.00003636767,0.0000291788,0.00002552852],"domain_scores_gemma":[0.9998451,0.00004990838,0.00002622063,0.00003173562,0.00002504738,0.00002195689],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.0005335535,0.00007423005,0.008550674,0.0001928535,0.00005354704,0.0003410303,0.0005159484,0.0008287171,0.9509032,0.0219663,0.00103797,0.01500204],"study_design_scores_gemma":[0.00005700371,0.0009441083,0.009819019,0.00004187027,0.0000448618,0.0005582692,0.000433104,0.007939639,0.9506697,0.00396461,0.02549326,0.00003455063],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9796687,0.0008794745,0.008765647,0.00008824928,0.00005748721,0.00001438115,0.0002664267,0.00008349618,0.01017621],"genre_scores_gemma":[0.9890831,0.0002308564,0.001915584,0.00003734502,0.00001270855,0.0000134302,0.0002424144,0.00001456478,0.008450136],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.005667669,"threshold_uncertainty_score":0.01896018,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.0157231119307457,"score_gpt":0.287404695033022,"score_spread":0.2716815831022763,"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."}}