{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:ECNEU2C4QZIW4ZHHHRC2FJHAXA","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":"a6349edbbbfe9ae22da57f11bdaba7a3bd5d545edee90dca862bae9fa15449ea","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2013-01-21T03:01:53Z","title_canon_sha256":"04438f1947139cd74ac36b8b9e82ec35cd628ab6cb3cd629829059378acc1ccf"},"schema_version":"1.0","source":{"id":"1301.4740","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.4740","created_at":"2026-05-18T03:27:11Z"},{"alias_kind":"arxiv_version","alias_value":"1301.4740v3","created_at":"2026-05-18T03:27:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.4740","created_at":"2026-05-18T03:27:11Z"},{"alias_kind":"pith_short_12","alias_value":"ECNEU2C4QZIW","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_16","alias_value":"ECNEU2C4QZIW4ZHH","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_8","alias_value":"ECNEU2C4","created_at":"2026-05-18T12:27:43Z"}],"graph_snapshots":[{"event_id":"sha256:ea94a930ef694acb4ef155e9de31a1e509ac55eeb845d6d3432ff57ce107e324","target":"graph","created_at":"2026-05-18T03:27:11Z","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":"We theoretically study the magnetic excitations in a frustrated two-leg spin-ladder system, in which antiferromagnetic exchange interactions act on the nearest-neighbor and next-nearestneighbor bonds in the leg direction, and on the nearest-neighbor bonds in the rung direction. A dynamical spin correlation function at zero temperature is calculated by using the dynamical density-matrix renormalization-group method for possible magnetic phases, i.e., columnar-dimer and rung-singlet phases. The columnar-dimer phase is characterized by multi-spinon excitations with spin gap, while the rung-single","authors_text":"Michiyasu Mori, Sadamichi Maekawa, Takami Tohyama, Takanori Sugimoto","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2013-01-21T03:01:53Z","title":"Frustration effect on magnetic excitations in a two-leg spin-ladder system"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.4740","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":"sha256:1fa47bca21d5792b6795a34b6ba5caf0e02a56d1ba93f1690812bda922b050b1","target":"record","created_at":"2026-05-18T03:27:11Z","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":"a6349edbbbfe9ae22da57f11bdaba7a3bd5d545edee90dca862bae9fa15449ea","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2013-01-21T03:01:53Z","title_canon_sha256":"04438f1947139cd74ac36b8b9e82ec35cd628ab6cb3cd629829059378acc1ccf"},"schema_version":"1.0","source":{"id":"1301.4740","kind":"arxiv","version":3}},"canonical_sha256":"209a4a685c86516e64e73c45a2a4e0b8064fef963e9b84bf253a229ced618c2c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"209a4a685c86516e64e73c45a2a4e0b8064fef963e9b84bf253a229ced618c2c","first_computed_at":"2026-05-18T03:27:11.217795Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:27:11.217795Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VnS4NSkPB+yMesEtcO37hRJYqe8gg2NmZTEQpiDm+Fb5jOG71+jeBj4JpwhSeCbHUM8cUGBAwHVauRNn6xlLCA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:27:11.218544Z","signed_message":"canonical_sha256_bytes"},"source_id":"1301.4740","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1fa47bca21d5792b6795a34b6ba5caf0e02a56d1ba93f1690812bda922b050b1","sha256:ea94a930ef694acb4ef155e9de31a1e509ac55eeb845d6d3432ff57ce107e324"],"state_sha256":"eb677c2a0cccefbd8e2bf7366be1cd497003583a49df4b6e2c23d29d4e5d7eca"}