{"id":"W4400646430","doi":"10.3390/universe10070296","title":"Lorentzian Quantum Cosmology from Effective Spin Foams","year":2024,"lang":"en","type":"article","venue":"Universe","topic":"Noncommutative and Quantum Gravity Theories","field":"Physics and Astronomy","cited_by":12,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Waterloo; Perimeter Institute","funders":"Natural Sciences and Engineering Research Council of Canada","keywords":"Physics; Spin foam; Spin (aerodynamics); Computation; Quantum cosmology; Theoretical physics; Cosmology; Boundary (topology); Quantum; Gravitation; Universe; Boundary value problem; Metric expansion of space; Group field theory; Classical mechanics; Quantum gravity; Loop quantum gravity; Quantum mechanics; Algorithm; Mathematical analysis; Computer science","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":["insufficient_payload"],"consensus_categories":[],"category_scores_codex":[0.00006029514,0.0001257634,0.0001486504,0.00006994309,0.00008372904,0.00003885869,0.0001121546,0.00003127135,0.001084932],"category_scores_gemma":[0.000002917433,0.0001144958,0.0001015208,0.0001399732,0.0001384931,0.0001393227,0.00007807132,0.0001725763,0.0007243312],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.00003177316,"about_ca_system_score_gemma":0.00003546303,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.001370546,"about_ca_topic_score_gemma":0.00001402684,"domain_scores_codex":[0.9993826,0.00009517126,0.00008215557,0.0002093855,0.00005957906,0.0001711161],"domain_scores_gemma":[0.9995407,0.0002043305,0.00002352494,0.0001515661,0.00002341911,0.00005641257],"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":[0.00003230567,0.00004894002,0.003397948,0.000006300813,0.000160769,0.00007662261,0.001689845,0.000004578209,0.0008559217,0.9670366,0.001764309,0.02492583],"study_design_scores_gemma":[0.0005208183,0.0001634752,0.00219098,0.00007713131,0.00009089016,0.000001340404,0.00553905,0.0008592189,0.004808346,0.9129991,0.07248179,0.000267849],"study_design_candidate":"theoretical_or_conceptual","study_design_consensus":"theoretical_or_conceptual","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9581144,0.0001491099,0.01647883,0.0001907932,0.0006560283,0.0001647668,0.0002449543,0.00008803663,0.02391301],"genre_scores_gemma":[0.9988049,0.000001566562,0.00009878041,0.00002647533,0.0002399961,0.000006470396,0.0001288917,0.0000149315,0.0006779858],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.07071748,"threshold_uncertainty_score":0.9998282,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.007152266516212668,"score_gpt":0.26200855649912,"score_spread":0.2548562899829073,"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."}}