{"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":"codex-gemma-dda1882f352a","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0001168519,0.0001779158,0.0003366061,0.00001855743,0.00003093027,0.00001142291,0.0001414553,0.00000430721,0.00005542563],"category_scores_gemma":[0.000002606838,0.0001563327,0.0001918128,0.0001967658,0.00003439011,0.0002225004,0.00004312698,0.0001671647,0.0003604882],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.00002234812,"about_ca_system_score_gemma":0.00001490396,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.00002676488,"about_ca_topic_score_gemma":1.652805e-7,"domain_scores_codex":[0.9989735,0.00007794693,0.0001929269,0.0001793712,0.0001513851,0.0004248076],"domain_scores_gemma":[0.9995614,0.00003061202,0.00007716212,0.0002008331,0.00001098723,0.0001190566],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"not_applicable","study_design_scores_codex":[0.00005731371,0.00542548,0.1236954,0.003283042,0.0009652512,0.00003676583,0.005042249,0.0004246531,0.4563318,0.1289499,0.02786812,0.2479201],"study_design_scores_gemma":[0.0113949,0.0003080345,0.1464799,0.01180587,0.002160597,0.00001856588,0.0003993179,0.01166168,0.174614,0.03462277,0.5950978,0.01143661],"study_design_candidate":"bench_or_experimental","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9927315,0.002878916,0.001778067,0.0008205094,0.00006498169,0.0003256681,0.00001028628,0.00001882225,0.001371316],"genre_scores_gemma":[0.9949943,0.0002043756,0.00003496538,0.004289283,0.0003632692,0.00004361875,0.00002439236,0.00002379677,0.00002193918],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.5672296,"threshold_uncertainty_score":0.6375064,"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."}}