{"paper":{"title":"Halo Nuclei from Ab Initio Nuclear Theory","license":"http://creativecommons.org/licenses/by/4.0/","headline":"The no-core shell model with continuum unifies descriptions of bound and scattering states in light halo nuclei using only chiral nucleon forces.","cross_cats":["nucl-ex"],"primary_cat":"nucl-th","authors_text":"Guillaume Hupin, Kostas Kravvaris, Michael Gennari, Petr Navratil, Sofia Quaglioni","submitted_at":"2026-04-03T01:03:57Z","abstract_excerpt":"A realistic description of halo nuclei, characterized by low-lying breakup thresholds, requires a proper treatment of continuum effects. We have developed an ab initio approach, the no-core shell model with continuum (NCSMC), capable of describing both bound and unbound states in light nuclei in a unified way. With chiral two- and three-nucleon interactions as the only input, we can predict structure and dynamics of halo and other light nuclei and, by comparing to available experimental data, test the quality of chiral nuclear forces. We review NCSMC calculations of weakly bound states and res"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We have developed an ab initio approach, the no-core shell model with continuum (NCSMC), capable of describing both bound and unbound states in light nuclei in a unified way. With chiral two- and three-nucleon interactions as the only input, we can predict structure and dynamics of halo and other light nuclei.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"That the chiral two- and three-nucleon interactions, without system-specific adjustments, are sufficiently accurate to describe the low-lying continuum and halo properties of the nuclei considered.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"NCSMC enables ab initio predictions of structure, resonances, and reactions in halo nuclei such as 6He, 8B, 11Be, and 15C from chiral interactions alone.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"The no-core shell model with continuum unifies descriptions of bound and scattering states in light halo nuclei using only chiral nucleon forces.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"b9d17bcc59ba869265e60dcca3a5ab0e96b1f5fa11cdee02efb49615b5f591ca"},"source":{"id":"2604.02612","kind":"arxiv","version":2},"verdict":{"id":"569c2c58-ff84-453d-b334-b8bda017c982","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-13T19:04:57.575068Z","strongest_claim":"We have developed an ab initio approach, the no-core shell model with continuum (NCSMC), capable of describing both bound and unbound states in light nuclei in a unified way. With chiral two- and three-nucleon interactions as the only input, we can predict structure and dynamics of halo and other light nuclei.","one_line_summary":"NCSMC enables ab initio predictions of structure, resonances, and reactions in halo nuclei such as 6He, 8B, 11Be, and 15C from chiral interactions alone.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"That the chiral two- and three-nucleon interactions, without system-specific adjustments, are sufficiently accurate to describe the low-lying continuum and halo properties of the nuclei considered.","pith_extraction_headline":"The no-core shell model with continuum unifies descriptions of bound and scattering states in light halo nuclei using only chiral nucleon forces."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2604.02612/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":102,"sample":[{"doi":"10.1103/physrevlett.55.2676","year":1985,"title":"Measurements of Interaction Cross Sections and Nuclear Radii in the Light p-Shell Region","work_id":"3ec62c6e-be32-4995-bede-89f9fb7ad001","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"10.1016/j.ppnp.20","year":null,"title":"Recent experimental progress in nuclear halo structure studies","work_id":"bb7ba306-1f94-442b-87f2-0cb2484c28b8","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"10.1103/revmodphys.76.215","year":2004,"title":"Structure and reactions of quantum halos.Rev","work_id":"208cfa12-c2f9-4bd1-9197-5a2dc6dd8c6b","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"10.1016/j.nuclphysa.2012.01.010","year":2012,"title":"Energy levels of light nuclei A=11.Nuclear Physics A2012, 880, 88–195","work_id":"81e3506f-5b11-420e-8f97-1f8c27433828","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":1987,"title":"The Neutron Halo of Extremely Neutron-Rich Nuclei.Europhys","work_id":"287239b9-1222-4039-96e7-36c567dbf209","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":102,"snapshot_sha256":"29fbf2f92c2e4c58f697c4398d1fb1c0dcd609ad6b4b248e7bcb456418802d19","internal_anchors":0},"formal_canon":{"evidence_count":2,"snapshot_sha256":"e1957a829f5f11b3d74300efd84f8f244592df3285f85490e16230f88815249e"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}