{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:QCEASTKDDJQQGVYKJORYDUBZSL","short_pith_number":"pith:QCEASTKD","schema_version":"1.0","canonical_sha256":"8088094d431a6103570a4ba381d03992c02d3fd18a2b7614c42387c7c135ee4a","source":{"kind":"arxiv","id":"1612.02539","version":2},"attestation_state":"computed","paper":{"title":"Entanglement and coherence in a spin-s XXZ system under non-uniform fields","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"E. Rios, N. Canosa, R. Rossignoli","submitted_at":"2016-12-08T06:16:45Z","abstract_excerpt":"We investigate entanglement and coherence in an $XXZ$ spin-$s$ pair immersed in a non-uniform transverse magnetic field. The ground state and thermal entanglement phase diagrams are analyzed in detail in both the ferromagnetic and antiferromagnetic cases. It is shown that a non-uniform field enables to control the energy levels and the entanglement of the corresponding eigenstates, making it possible to entangle the system for any value of the exchange couplings, both at zero and finite temperatures. Moreover, the limit temperature for entanglement is shown to depend only on the difference $|h"},"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":"1612.02539","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-12-08T06:16:45Z","cross_cats_sorted":[],"title_canon_sha256":"6eb45c8438196d8d4a4387c6e5d2e9373e793ac5dee36caaf679d509aee396f4","abstract_canon_sha256":"78ef7c273f7e966097efcb64a6ec1d9362abe922e978c732f643ee2b7a0c37c4"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:45:44.341724Z","signature_b64":"eRuXOL8dD4Zuw5as/9lbuh8wqaNa16hylMww5CMLp9803ggJYCO4TBLi3RxmUOk9NttbBQ4i++HasEB56dOUAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8088094d431a6103570a4ba381d03992c02d3fd18a2b7614c42387c7c135ee4a","last_reissued_at":"2026-05-18T00:45:44.341068Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:45:44.341068Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Entanglement and coherence in a spin-s XXZ system under non-uniform fields","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"E. Rios, N. Canosa, R. Rossignoli","submitted_at":"2016-12-08T06:16:45Z","abstract_excerpt":"We investigate entanglement and coherence in an $XXZ$ spin-$s$ pair immersed in a non-uniform transverse magnetic field. The ground state and thermal entanglement phase diagrams are analyzed in detail in both the ferromagnetic and antiferromagnetic cases. It is shown that a non-uniform field enables to control the energy levels and the entanglement of the corresponding eigenstates, making it possible to entangle the system for any value of the exchange couplings, both at zero and finite temperatures. Moreover, the limit temperature for entanglement is shown to depend only on the difference $|h"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1612.02539","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":"1612.02539","created_at":"2026-05-18T00:45:44.341172+00:00"},{"alias_kind":"arxiv_version","alias_value":"1612.02539v2","created_at":"2026-05-18T00:45:44.341172+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1612.02539","created_at":"2026-05-18T00:45:44.341172+00:00"},{"alias_kind":"pith_short_12","alias_value":"QCEASTKDDJQQ","created_at":"2026-05-18T12:30:39.010887+00:00"},{"alias_kind":"pith_short_16","alias_value":"QCEASTKDDJQQGVYK","created_at":"2026-05-18T12:30:39.010887+00:00"},{"alias_kind":"pith_short_8","alias_value":"QCEASTKD","created_at":"2026-05-18T12:30:39.010887+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/QCEASTKDDJQQGVYKJORYDUBZSL","json":"https://pith.science/pith/QCEASTKDDJQQGVYKJORYDUBZSL.json","graph_json":"https://pith.science/api/pith-number/QCEASTKDDJQQGVYKJORYDUBZSL/graph.json","events_json":"https://pith.science/api/pith-number/QCEASTKDDJQQGVYKJORYDUBZSL/events.json","paper":"https://pith.science/paper/QCEASTKD"},"agent_actions":{"view_html":"https://pith.science/pith/QCEASTKDDJQQGVYKJORYDUBZSL","download_json":"https://pith.science/pith/QCEASTKDDJQQGVYKJORYDUBZSL.json","view_paper":"https://pith.science/paper/QCEASTKD","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1612.02539&json=true","fetch_graph":"https://pith.science/api/pith-number/QCEASTKDDJQQGVYKJORYDUBZSL/graph.json","fetch_events":"https://pith.science/api/pith-number/QCEASTKDDJQQGVYKJORYDUBZSL/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/QCEASTKDDJQQGVYKJORYDUBZSL/action/timestamp_anchor","attest_storage":"https://pith.science/pith/QCEASTKDDJQQGVYKJORYDUBZSL/action/storage_attestation","attest_author":"https://pith.science/pith/QCEASTKDDJQQGVYKJORYDUBZSL/action/author_attestation","sign_citation":"https://pith.science/pith/QCEASTKDDJQQGVYKJORYDUBZSL/action/citation_signature","submit_replication":"https://pith.science/pith/QCEASTKDDJQQGVYKJORYDUBZSL/action/replication_record"}},"created_at":"2026-05-18T00:45:44.341172+00:00","updated_at":"2026-05-18T00:45:44.341172+00:00"}