{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:VPF6MNWSB6GNKRR767DGLNKQ6L","short_pith_number":"pith:VPF6MNWS","schema_version":"1.0","canonical_sha256":"abcbe636d20f8cd5463ff7c665b550f2fceb83459d7ea01c4cfb82ab8c3ef08c","source":{"kind":"arxiv","id":"1502.07000","version":2},"attestation_state":"computed","paper":{"title":"Quantum entanglement in trimer spin-1/2 Heisenberg chains with antiferromagnetic coupling","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall","cond-mat.mtrl-sci","cond-mat.str-el","hep-th"],"primary_cat":"quant-ph","authors_text":"D.H.T. Franco, O.M. Del Cima, S.L.L. da Silva","submitted_at":"2015-02-24T22:59:07Z","abstract_excerpt":"The quantum entanglement measure is determined, for the first time, for antiferromagnetic trimer spin-1/2 Heisenberg chains. The physical quantity proposed to measure the entanglement is the distance between states by adopting the Hilbert-Schmidt norm. The method is applied to the new magnetic Cu(II) trimer system, 2b.3CuCl_2.2H_2O, and to the trinuclear Cu(II) halide salt, (3MAP)_2Cu_2Cl_8. The decoherence temperature, above which the entanglement is suppressed, is determined for the both systems. A correlation among their decoherence temperatures and their respective exchange coupling consta"},"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":"1502.07000","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-02-24T22:59:07Z","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.mtrl-sci","cond-mat.str-el","hep-th"],"title_canon_sha256":"9219c565c8a09ff983ce76e5a3e470e1fd6096cac5b7fc829cc660db30533068","abstract_canon_sha256":"ffcb6574f0cb09a48d44683eee74105230389c24d9953916277c0ee0382d7975"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:19:00.306914Z","signature_b64":"IH3Q1S2W4mKQ3ugtDKPzfYDM1lZ/pKEr+W+TsNm+dRiQegS6V4oW7RAizBsAFol5B08olvARN6yQJT/iL41iCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"abcbe636d20f8cd5463ff7c665b550f2fceb83459d7ea01c4cfb82ab8c3ef08c","last_reissued_at":"2026-05-18T02:19:00.305768Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:19:00.305768Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Quantum entanglement in trimer spin-1/2 Heisenberg chains with antiferromagnetic coupling","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall","cond-mat.mtrl-sci","cond-mat.str-el","hep-th"],"primary_cat":"quant-ph","authors_text":"D.H.T. Franco, O.M. Del Cima, S.L.L. da Silva","submitted_at":"2015-02-24T22:59:07Z","abstract_excerpt":"The quantum entanglement measure is determined, for the first time, for antiferromagnetic trimer spin-1/2 Heisenberg chains. The physical quantity proposed to measure the entanglement is the distance between states by adopting the Hilbert-Schmidt norm. The method is applied to the new magnetic Cu(II) trimer system, 2b.3CuCl_2.2H_2O, and to the trinuclear Cu(II) halide salt, (3MAP)_2Cu_2Cl_8. The decoherence temperature, above which the entanglement is suppressed, is determined for the both systems. A correlation among their decoherence temperatures and their respective exchange coupling consta"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.07000","kind":"arxiv","version":2},"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":"1502.07000","created_at":"2026-05-18T02:19:00.306427+00:00"},{"alias_kind":"arxiv_version","alias_value":"1502.07000v2","created_at":"2026-05-18T02:19:00.306427+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.07000","created_at":"2026-05-18T02:19:00.306427+00:00"},{"alias_kind":"pith_short_12","alias_value":"VPF6MNWSB6GN","created_at":"2026-05-18T12:29:47.479230+00:00"},{"alias_kind":"pith_short_16","alias_value":"VPF6MNWSB6GNKRR7","created_at":"2026-05-18T12:29:47.479230+00:00"},{"alias_kind":"pith_short_8","alias_value":"VPF6MNWS","created_at":"2026-05-18T12:29:47.479230+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/VPF6MNWSB6GNKRR767DGLNKQ6L","json":"https://pith.science/pith/VPF6MNWSB6GNKRR767DGLNKQ6L.json","graph_json":"https://pith.science/api/pith-number/VPF6MNWSB6GNKRR767DGLNKQ6L/graph.json","events_json":"https://pith.science/api/pith-number/VPF6MNWSB6GNKRR767DGLNKQ6L/events.json","paper":"https://pith.science/paper/VPF6MNWS"},"agent_actions":{"view_html":"https://pith.science/pith/VPF6MNWSB6GNKRR767DGLNKQ6L","download_json":"https://pith.science/pith/VPF6MNWSB6GNKRR767DGLNKQ6L.json","view_paper":"https://pith.science/paper/VPF6MNWS","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1502.07000&json=true","fetch_graph":"https://pith.science/api/pith-number/VPF6MNWSB6GNKRR767DGLNKQ6L/graph.json","fetch_events":"https://pith.science/api/pith-number/VPF6MNWSB6GNKRR767DGLNKQ6L/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/VPF6MNWSB6GNKRR767DGLNKQ6L/action/timestamp_anchor","attest_storage":"https://pith.science/pith/VPF6MNWSB6GNKRR767DGLNKQ6L/action/storage_attestation","attest_author":"https://pith.science/pith/VPF6MNWSB6GNKRR767DGLNKQ6L/action/author_attestation","sign_citation":"https://pith.science/pith/VPF6MNWSB6GNKRR767DGLNKQ6L/action/citation_signature","submit_replication":"https://pith.science/pith/VPF6MNWSB6GNKRR767DGLNKQ6L/action/replication_record"}},"created_at":"2026-05-18T02:19:00.306427+00:00","updated_at":"2026-05-18T02:19:00.306427+00:00"}