{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1999:PNCSCD54KYVHFVVQG2SDKCZDV7","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":"a8a692513ae3070e881b5fdde13f364acc3a182fa803ca9b218cddec87051d84","cross_cats_sorted":["cond-mat.supr-con"],"license":"","primary_cat":"cond-mat.str-el","submitted_at":"1999-02-17T23:13:28Z","title_canon_sha256":"fa27f1a5cedd87ee8ca749dc05b588359f478909b7aea77704861eac65dff535"},"schema_version":"1.0","source":{"id":"cond-mat/9902248","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/9902248","created_at":"2026-07-04T16:12:17Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/9902248v1","created_at":"2026-07-04T16:12:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/9902248","created_at":"2026-07-04T16:12:17Z"},{"alias_kind":"pith_short_12","alias_value":"PNCSCD54KYVH","created_at":"2026-07-04T16:12:17Z"},{"alias_kind":"pith_short_16","alias_value":"PNCSCD54KYVHFVVQ","created_at":"2026-07-04T16:12:17Z"},{"alias_kind":"pith_short_8","alias_value":"PNCSCD54","created_at":"2026-07-04T16:12:17Z"}],"graph_snapshots":[{"event_id":"sha256:844961c428e741f6e6de77f021a1e127ef381e0b6cd7ce0cc98f24d7bc103664","target":"graph","created_at":"2026-07-04T16:12:17Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/cond-mat/9902248/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report a quantum Monte Carlo study of the thermodynamic properties of arrays of spin ladders with various widths ($n$), coupled via a weak inter-ladder exchange coupling $\\alpha J$, where $J$ is the intra-ladder coupling both along and between the chains. This coupled ladder system serves as a simplified model for the magnetism of presumed ordered spin and charge stripes in the two-dimensional CuO$_2$ planes of hole-doped copper oxides. Our results for $n=3$ with weak inter-ladder coupling $\\alpha=0.05$, estimated from the $t-t'-t''-J$ model, show good agreement with the ordering temperatur","authors_text":"G. Shirane, K. Yamada, M. A. Kastner, R. J. Birgeneau, Y. Endoh, Y. J. Kim, Y. S. Lee","cross_cats":["cond-mat.supr-con"],"headline":"","license":"","primary_cat":"cond-mat.str-el","submitted_at":"1999-02-17T23:13:28Z","title":"Quantum Monte Carlo Study of Weakly Coupled Spin Ladders"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/9902248","kind":"arxiv","version":1},"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":"sha256:73c1e10ce3d3bdd0c92ffae6dc48519c90c1a3bc743c6fbdf6f91468ad4dece8","target":"record","created_at":"2026-07-04T16:12:17Z","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":"a8a692513ae3070e881b5fdde13f364acc3a182fa803ca9b218cddec87051d84","cross_cats_sorted":["cond-mat.supr-con"],"license":"","primary_cat":"cond-mat.str-el","submitted_at":"1999-02-17T23:13:28Z","title_canon_sha256":"fa27f1a5cedd87ee8ca749dc05b588359f478909b7aea77704861eac65dff535"},"schema_version":"1.0","source":{"id":"cond-mat/9902248","kind":"arxiv","version":1}},"canonical_sha256":"7b45210fbc562a72d6b036a4350b23afe49bf5c18e1f52d1cddc00422e67e09c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7b45210fbc562a72d6b036a4350b23afe49bf5c18e1f52d1cddc00422e67e09c","first_computed_at":"2026-07-04T16:12:17.800788Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:12:17.800788Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"W82jCkgCs+yTPA9EI4n8jvMu76G/oE4V1wYYhsGOZAmcJU1QlkAKpkYNYpVfvcMme2pV78LNvoD+6lgGm6o5Bg==","signature_status":"signed_v1","signed_at":"2026-07-04T16:12:17.801174Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/9902248","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:73c1e10ce3d3bdd0c92ffae6dc48519c90c1a3bc743c6fbdf6f91468ad4dece8","sha256:844961c428e741f6e6de77f021a1e127ef381e0b6cd7ce0cc98f24d7bc103664"],"state_sha256":"af8ac3768ecf3a1b4661b49ddacdc788d9e4710ab14fd82128ae742300f380d4"}