{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:2HPKHBLDDJAKLMBLBSQTZPBS7S","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"8dec22f0d514547a6ec4c405a5a4baa89beb45bc807e0c012c2b1cf2a950ddae","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-02-12T05:06:04Z","title_canon_sha256":"95fb407d4279d96a64d494d0dd432e20e6d124e63d3b6944f65f5511f42a807f"},"schema_version":"1.0","source":{"id":"1302.2700","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.2700","created_at":"2026-05-18T03:24:53Z"},{"alias_kind":"arxiv_version","alias_value":"1302.2700v2","created_at":"2026-05-18T03:24:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.2700","created_at":"2026-05-18T03:24:53Z"},{"alias_kind":"pith_short_12","alias_value":"2HPKHBLDDJAK","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"2HPKHBLDDJAKLMBL","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"2HPKHBLD","created_at":"2026-05-18T12:27:30Z"}],"graph_snapshots":[{"event_id":"sha256:7d0458833fe099e968061306bcfedbf9ca0926de7ca42788a07523b0aa4be795","target":"graph","created_at":"2026-05-18T03:24:53Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We investigate entanglement generation in one-dimensional quantum spin systems with the sinusoidal deformation. In the system, the energy scale of each local term in the Hamiltonian is modified according to a position-dependent function \\sin^\\alpha[\\frac{\\pi}{N} (x - \\frac{1}{2})], where x is the position of the local term and N is the length of the system. We show that at zero temperature the system with \\alpha \\ge 2 is able to generate a sizable entanglement between two spins at open edges even when the two spins are infinitely far apart. This long-distance entanglement is rather robust agai","authors_text":"Takafumi Suzuki, Toshiya Hikihara","cross_cats":["cond-mat.stat-mech"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-02-12T05:06:04Z","title":"Long distance entanglement in one-dimensional quantum systems under sinusoidal deformation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.2700","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:774046bfc40f95acb2b6dd15f273d220c101552eeb4e8a30eb5f812877086419","target":"record","created_at":"2026-05-18T03:24:53Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"8dec22f0d514547a6ec4c405a5a4baa89beb45bc807e0c012c2b1cf2a950ddae","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-02-12T05:06:04Z","title_canon_sha256":"95fb407d4279d96a64d494d0dd432e20e6d124e63d3b6944f65f5511f42a807f"},"schema_version":"1.0","source":{"id":"1302.2700","kind":"arxiv","version":2}},"canonical_sha256":"d1dea385631a40a5b02b0ca13cbc32fc93fe649fce08a47ee798de7007035731","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d1dea385631a40a5b02b0ca13cbc32fc93fe649fce08a47ee798de7007035731","first_computed_at":"2026-05-18T03:24:53.815413Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:24:53.815413Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vrgmgRrE5UrGeqhHDlVLrX4eqHLmRzAv2kfGiU8pchxF9hR+X/sKI1eDbHBVsRAE+ZYS13SSryxzcGgnzX/qCw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:24:53.816207Z","signed_message":"canonical_sha256_bytes"},"source_id":"1302.2700","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:774046bfc40f95acb2b6dd15f273d220c101552eeb4e8a30eb5f812877086419","sha256:7d0458833fe099e968061306bcfedbf9ca0926de7ca42788a07523b0aa4be795"],"state_sha256":"0bebed8fcd403c08b9bf0e3207710834e3e985b068eafcd251e79ec36a40d685"}