{"id":"W2618962632","doi":"10.1103/physreva.96.022704","title":"Collisional frequency shift of a trapped-ion optical clock","year":2017,"lang":"en","type":"article","venue":"Physical review. A/Physical review, A","topic":"Advanced Frequency and Time Standards","field":"Physics and Astronomy","cited_by":22,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Toronto","funders":"Natural Sciences and Engineering Research Council of Canada; Canada Research Chairs; Branco Weiss Fellowship – Society in Science","keywords":"Atomic clock; Atomic physics; Physics; Ion; Quantum; Scattering; Helium; Frequency shift; Quantum defect; Quantum mechanics; Optics","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":"codex-gemma-dda1882f352a","candidate_categories":["metaepi_narrow"],"consensus_categories":[],"category_scores_codex":[0.000460313,0.0006445449,0.002170584,0.0000359224,0.0004407556,0.00006215511,0.001143742,0.00005050998,0.0006371544],"category_scores_gemma":[0.000510433,0.0004991685,0.001465562,0.000314136,0.0006258742,0.0006208532,0.0002574625,0.000717258,0.0004435501],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.00005865302,"about_ca_system_score_gemma":0.0002452885,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.00004403263,"about_ca_topic_score_gemma":0.000001818026,"domain_scores_codex":[0.9962691,0.000192137,0.0009604743,0.0008456447,0.001023061,0.0007095762],"domain_scores_gemma":[0.9962978,0.0003729279,0.0008870273,0.001687808,0.000315437,0.0004389648],"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":[0.00003729215,0.001726575,0.001552171,0.004546868,0.0002012356,0.00001176827,0.00005839306,0.00000332554,0.007545109,0.9021906,0.003122377,0.07900431],"study_design_scores_gemma":[0.001347135,0.0006429719,0.00385703,0.02907642,0.001272407,0.000004074799,0.00001090509,0.000400364,0.01905704,0.8573434,0.08554235,0.001445877],"study_design_candidate":"theoretical_or_conceptual","study_design_consensus":"theoretical_or_conceptual","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.4078074,0.1609439,0.02899654,0.009676336,0.001236966,0.007850199,0.002067311,0.0002628542,0.3811585],"genre_scores_gemma":[0.9810089,0.01496206,0.000675865,0.0003524924,0.002481989,0.0002772638,0.00007484956,0.00006299388,0.0001035941],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.5732015,"threshold_uncertainty_score":0.999746,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01667443316218184,"score_gpt":0.3835196611612702,"score_spread":0.3668452279990884,"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."}}