{"paper":{"title":"Bayesian inferences on covariant density functionals from multimessenger astrophysical data: Influences of parametrizations of density dependent couplings","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Different parametrizations of density dependence in covariant density functionals produce comparable Bayesian inferences from multimessenger data yet leave significant differences in the equation of state and symmetry energy at suprasupersa","cross_cats":["nucl-th"],"primary_cat":"astro-ph.HE","authors_text":"Armen Sedrakian, Fu-Hu Liu, Guo-Jun Wei, Jia-Jie Li, Qing-Feng Li, Yong-Jia Wang","submitted_at":"2025-12-01T10:27:50Z","abstract_excerpt":"Covariant density functionals have been successfully applied to the description of finite nuclei and dense nuclear matter. These functionals are often constructed by introducing density dependence into the nucleon-meson couplings, typically through functions that depend only on the vector, i.e., proper baryon density. In this work, we employ a Bayesian framework to investigate how different parametrizations, characterized by distinct functional forms and by their dependencies on vector and scalar densities, affect the properties of dense matter and compact stars. Our analysis demonstrates that"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"Our analysis demonstrates that although all considered parametrizations yield broadly comparable inferences, the differences in the equation of state and the symmetry energy remain significant at suprasaturation densities, reflecting the sensitivity to the chosen functional form of the density dependence.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The assumption that the selected functional forms for density dependence, together with the multimessenger data, are sufficient to capture the essential physics of dense matter without missing interactions or requiring additional degrees of freedom beyond those adjusted in the Bayesian analysis.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Different parametrizations of density dependence in covariant density functionals produce significant variations in the high-density equation of state and symmetry energy, with rational-function forms providing flexibility when saturation properties are adjusted and constrained by multimessenger ast","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Different parametrizations of density dependence in covariant density functionals produce comparable Bayesian inferences from multimessenger data yet leave significant differences in the equation of state and symmetry energy at suprasupersa","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"8ae379d4359568dc34976c5b79f0e1afb5069a41731458c7139752caa272a176"},"source":{"id":"2512.01503","kind":"arxiv","version":2},"verdict":{"id":"84a598ea-1801-4e1e-9b4b-3d37dcd8e09e","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-17T03:05:21.308818Z","strongest_claim":"Our analysis demonstrates that although all considered parametrizations yield broadly comparable inferences, the differences in the equation of state and the symmetry energy remain significant at suprasaturation densities, reflecting the sensitivity to the chosen functional form of the density dependence.","one_line_summary":"Different parametrizations of density dependence in covariant density functionals produce significant variations in the high-density equation of state and symmetry energy, with rational-function forms providing flexibility when saturation properties are adjusted and constrained by multimessenger ast","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The assumption that the selected functional forms for density dependence, together with the multimessenger data, are sufficient to capture the essential physics of dense matter without missing interactions or requiring additional degrees of freedom beyond those adjusted in the Bayesian analysis.","pith_extraction_headline":"Different parametrizations of density dependence in covariant density functionals produce comparable Bayesian inferences from multimessenger data yet leave significant differences in the equation of state and symmetry energy at suprasupersa"},"references":{"count":89,"sample":[{"doi":"","year":2017,"title":"Equations of state for supernovae and compact stars","work_id":"061c6ff3-15f9-433b-ae34-734109deded3","ref_index":1,"cited_arxiv_id":"1610.03361","is_internal_anchor":true},{"doi":"10.1016/j.ppnp.2023.104041","year":2023,"title":"A. Sedrakian, J. J. Li, F. Weber, Heavy baryons in compact stars, Prog. Part. Nucl. Phys. 131 (2023) 104041.arXiv: 2212.01086,doi:10.1016/j.ppnp.2023.104041","work_id":"615c3d43-834f-446e-a9f5-bb0afb63173c","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2017,"title":"GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral","work_id":"a19136e8-99c2-49be-b029-60af2e20c6ee","ref_index":3,"cited_arxiv_id":"1710.05832","is_internal_anchor":true},{"doi":"10.1103/physrevlett.121.161101","year":2018,"title":"2018, , 121, 161101, 10.1103/PhysRevLett.121.161101","work_id":"0b4760e3-5918-43e0-a694-20f732bf4bf4","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2019,"title":"Properties of the binary neutron star merger GW170817","work_id":"a0a59415-dfe5-4b82-92fe-d7036d9cf9eb","ref_index":5,"cited_arxiv_id":"1805.11579","is_internal_anchor":true}],"resolved_work":89,"snapshot_sha256":"ac77e71c8127e4b0bbb7c23544bbd7501fc493628f85cde21a4758458939fa43","internal_anchors":23},"formal_canon":{"evidence_count":2,"snapshot_sha256":"30c0aa53723936930692d129615e6c2d42f62ac461dc6264a0891e8460e8f3ad"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}