{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:CM6Q4DD53D7MVFVTBCM2MA2VWL","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":"8f14673de3d4fff8a821e868aadd4e27453848e55f1c3b1ba5003ece58be3ed3","cross_cats_sorted":["cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2008-07-14T07:10:38Z","title_canon_sha256":"1881958d916ce82f36ed1e981a42991c020bcf55b3f15f5cc7fd29d25a032603"},"schema_version":"1.0","source":{"id":"0807.2094","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0807.2094","created_at":"2026-05-18T03:50:11Z"},{"alias_kind":"arxiv_version","alias_value":"0807.2094v2","created_at":"2026-05-18T03:50:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0807.2094","created_at":"2026-05-18T03:50:11Z"},{"alias_kind":"pith_short_12","alias_value":"CM6Q4DD53D7M","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"CM6Q4DD53D7MVFVT","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"CM6Q4DD5","created_at":"2026-05-18T12:25:57Z"}],"graph_snapshots":[{"event_id":"sha256:4d1e7e318638896461330afd36d64b9244d20f643977c3048aa9337d61081f7e","target":"graph","created_at":"2026-05-18T03:50:11Z","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":"The ground state phase diagram of the frustrated ferromagnetic spin-1/2 chain is investigated using the exact diagonalization technique. It is shown that there is a jump in the spontaneous magnetization and the ground state of the system undergos to a phase transition from a ferromagnetic phase to a phase with dimer ordering between next-nearest-neighbor spins. Near the quantum transition point, the critical behavior of the ground state energy is analyzed numerically. Using a practical finite-size scaling approach, the critical exponent of the ground state energy is computed. Our numerical res","authors_text":"S. Mahdavifar","cross_cats":["cond-mat.other"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2008-07-14T07:10:38Z","title":"Numerical study of the frustrated ferromagnetic spin-1/2 chain"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0807.2094","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":"sha256:9199c0752243ea1920b44ab2112f62b619d3e20f692b66b610a99f31f79e7d8c","target":"record","created_at":"2026-05-18T03:50:11Z","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":"8f14673de3d4fff8a821e868aadd4e27453848e55f1c3b1ba5003ece58be3ed3","cross_cats_sorted":["cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2008-07-14T07:10:38Z","title_canon_sha256":"1881958d916ce82f36ed1e981a42991c020bcf55b3f15f5cc7fd29d25a032603"},"schema_version":"1.0","source":{"id":"0807.2094","kind":"arxiv","version":2}},"canonical_sha256":"133d0e0c7dd8feca96b30899a60355b2fe3a8dc2e9a30e85ea37f0c39771f088","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"133d0e0c7dd8feca96b30899a60355b2fe3a8dc2e9a30e85ea37f0c39771f088","first_computed_at":"2026-05-18T03:50:11.258068Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:50:11.258068Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"s1SI4z4Px4x6G4hmQ0zdAYP4/VVqS+ytvzq9XXJppCS2aP/250Lopa2DSjiLCj8FQRDuQYYz+8O1IfyJaWvHCg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:50:11.258854Z","signed_message":"canonical_sha256_bytes"},"source_id":"0807.2094","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9199c0752243ea1920b44ab2112f62b619d3e20f692b66b610a99f31f79e7d8c","sha256:4d1e7e318638896461330afd36d64b9244d20f643977c3048aa9337d61081f7e"],"state_sha256":"eec48a0bc71c464f010556f79f68c4287805256601b589c08aee08878c52f1f9"}