{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:6QVJQ3XRGG3PP6CEYFRLMJABUX","short_pith_number":"pith:6QVJQ3XR","schema_version":"1.0","canonical_sha256":"f42a986ef131b6f7f844c162b62401a5effd46af21b828c53bca924593b14365","source":{"kind":"arxiv","id":"1809.01421","version":1},"attestation_state":"computed","paper":{"title":"Quartet structure of $N=Z$ nuclei in a boson formalism: the case of $^{28}$Si","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"M. Sambataro, N. Sandulescu","submitted_at":"2018-09-05T10:21:32Z","abstract_excerpt":"The structure of the $N=Z$ nucleus $^{28}$Si is studied by resorting to an IBM-type formalism with $s$ and $d$ bosons representing isospin $T=0$ and angular momentum $J=0$ and $J=2$ quartets, respectively. $T=0$ quartets are four-body correlated structures formed by two protons and two neutrons. The microscopic nature of the quartet bosons, meant as images of the fermionic quartets, is investigated by making use of a mapping procedure and is supported by the close resemblance between the phenomenological and microscopically derived Hamiltonians. The ground state band and two low-lying side ban"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1809.01421","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2018-09-05T10:21:32Z","cross_cats_sorted":[],"title_canon_sha256":"05d6b5cb335a46076a56feefbba683e1079cc2c68075f239d3768e519859bf47","abstract_canon_sha256":"1440f8624beb5a901abcf774121e33090dbbe26404911e91504f1dc9483c09df"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:03:01.683150Z","signature_b64":"bW5roIUK9vaxwZrGducUWzExSQFvEprQS8uykTMa7jmilQzT1pruGZW6GlT4D4qZf+OUpP+tbwRy915GVQwxAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f42a986ef131b6f7f844c162b62401a5effd46af21b828c53bca924593b14365","last_reissued_at":"2026-05-18T00:03:01.682600Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:03:01.682600Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Quartet structure of $N=Z$ nuclei in a boson formalism: the case of $^{28}$Si","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"M. Sambataro, N. Sandulescu","submitted_at":"2018-09-05T10:21:32Z","abstract_excerpt":"The structure of the $N=Z$ nucleus $^{28}$Si is studied by resorting to an IBM-type formalism with $s$ and $d$ bosons representing isospin $T=0$ and angular momentum $J=0$ and $J=2$ quartets, respectively. $T=0$ quartets are four-body correlated structures formed by two protons and two neutrons. The microscopic nature of the quartet bosons, meant as images of the fermionic quartets, is investigated by making use of a mapping procedure and is supported by the close resemblance between the phenomenological and microscopically derived Hamiltonians. The ground state band and two low-lying side ban"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.01421","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1809.01421","created_at":"2026-05-18T00:03:01.682677+00:00"},{"alias_kind":"arxiv_version","alias_value":"1809.01421v1","created_at":"2026-05-18T00:03:01.682677+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.01421","created_at":"2026-05-18T00:03:01.682677+00:00"},{"alias_kind":"pith_short_12","alias_value":"6QVJQ3XRGG3P","created_at":"2026-05-18T12:32:11.075285+00:00"},{"alias_kind":"pith_short_16","alias_value":"6QVJQ3XRGG3PP6CE","created_at":"2026-05-18T12:32:11.075285+00:00"},{"alias_kind":"pith_short_8","alias_value":"6QVJQ3XR","created_at":"2026-05-18T12:32:11.075285+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/6QVJQ3XRGG3PP6CEYFRLMJABUX","json":"https://pith.science/pith/6QVJQ3XRGG3PP6CEYFRLMJABUX.json","graph_json":"https://pith.science/api/pith-number/6QVJQ3XRGG3PP6CEYFRLMJABUX/graph.json","events_json":"https://pith.science/api/pith-number/6QVJQ3XRGG3PP6CEYFRLMJABUX/events.json","paper":"https://pith.science/paper/6QVJQ3XR"},"agent_actions":{"view_html":"https://pith.science/pith/6QVJQ3XRGG3PP6CEYFRLMJABUX","download_json":"https://pith.science/pith/6QVJQ3XRGG3PP6CEYFRLMJABUX.json","view_paper":"https://pith.science/paper/6QVJQ3XR","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1809.01421&json=true","fetch_graph":"https://pith.science/api/pith-number/6QVJQ3XRGG3PP6CEYFRLMJABUX/graph.json","fetch_events":"https://pith.science/api/pith-number/6QVJQ3XRGG3PP6CEYFRLMJABUX/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/6QVJQ3XRGG3PP6CEYFRLMJABUX/action/timestamp_anchor","attest_storage":"https://pith.science/pith/6QVJQ3XRGG3PP6CEYFRLMJABUX/action/storage_attestation","attest_author":"https://pith.science/pith/6QVJQ3XRGG3PP6CEYFRLMJABUX/action/author_attestation","sign_citation":"https://pith.science/pith/6QVJQ3XRGG3PP6CEYFRLMJABUX/action/citation_signature","submit_replication":"https://pith.science/pith/6QVJQ3XRGG3PP6CEYFRLMJABUX/action/replication_record"}},"created_at":"2026-05-18T00:03:01.682677+00:00","updated_at":"2026-05-18T00:03:01.682677+00:00"}