{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:BHJJ2LKP7VVCW23FAMZBU2DVUY","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":"196d17a27b585f90355391d236e3082a18801bb01e8b8810b899e3e1a84bb7cd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2013-06-25T02:00:43Z","title_canon_sha256":"2612f1f28e623c8e0ab61805f185a333eb14ba43b8332cf0eaa30d7969a2663f"},"schema_version":"1.0","source":{"id":"1306.5828","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1306.5828","created_at":"2026-05-18T03:10:36Z"},{"alias_kind":"arxiv_version","alias_value":"1306.5828v3","created_at":"2026-05-18T03:10:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1306.5828","created_at":"2026-05-18T03:10:36Z"},{"alias_kind":"pith_short_12","alias_value":"BHJJ2LKP7VVC","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_16","alias_value":"BHJJ2LKP7VVCW23F","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_8","alias_value":"BHJJ2LKP","created_at":"2026-05-18T12:27:38Z"}],"graph_snapshots":[{"event_id":"sha256:a129ae97e9106280e33a69f3a27a9988270fe9f33cc91c2ff0568da4b4abb4b2","target":"graph","created_at":"2026-05-18T03:10:36Z","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 study the entanglement entropy scaling of the XXZ chain. While in the critical XY phase of the XXZ chain the entanglement entropy scales logarithmically with a coefficient that is determined by the associated conformal field theory, at the ferromagnetic point, however, the system is not conformally invariant yet the entanglement entropy still scales logarithmically albeit with a different coefficient. We investigate how such an nontrivial scaling at the ferromagnetic point influences the estimation of the central charge $c$ in the critical XY phase. In particular we use the entanglement sca","authors_text":"I. P. McCulloch, Miguel Cazalilla, Ming-Chiang Chung, Pochung Chen, S.-K. Yip, Zhi-Long Xue","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2013-06-25T02:00:43Z","title":"Entanglement entropy scaling of the XXZ chain"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1306.5828","kind":"arxiv","version":3},"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:d5904013308de318d58958e4c9349b1191551225f91cb05a09e253947818c9b8","target":"record","created_at":"2026-05-18T03:10:36Z","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":"196d17a27b585f90355391d236e3082a18801bb01e8b8810b899e3e1a84bb7cd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2013-06-25T02:00:43Z","title_canon_sha256":"2612f1f28e623c8e0ab61805f185a333eb14ba43b8332cf0eaa30d7969a2663f"},"schema_version":"1.0","source":{"id":"1306.5828","kind":"arxiv","version":3}},"canonical_sha256":"09d29d2d4ffd6a2b6b6503321a6875a60cd6dbe193f62911307b012f6c8f5196","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"09d29d2d4ffd6a2b6b6503321a6875a60cd6dbe193f62911307b012f6c8f5196","first_computed_at":"2026-05-18T03:10:36.664584Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:10:36.664584Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/0H6OAAzUrQ4VD9XhNV+rGET3nHjDw4zKaAKGjU4tKdoASUY4fJ3Mb2RudZJlWxX1F1t51cr4Rq9e+Bsaj3RDg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:10:36.665229Z","signed_message":"canonical_sha256_bytes"},"source_id":"1306.5828","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d5904013308de318d58958e4c9349b1191551225f91cb05a09e253947818c9b8","sha256:a129ae97e9106280e33a69f3a27a9988270fe9f33cc91c2ff0568da4b4abb4b2"],"state_sha256":"4ed9d6f19fe6d8a812661c194ddd7eef79555e8818b9c1f9bf9c485099e94bcf"}