{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:D3X2YAWHMHHK26DGCCX674YI4F","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":"1c5b498406f01b8ca5390d500ab0b0293aa0875df2ebe5305c60ed4741111ed7","cross_cats_sorted":["cond-mat.stat-mech","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2011-04-23T16:19:07Z","title_canon_sha256":"eca85c164ba00d405c1188b09535ee36ab5465a1a0d3f0789e9f8d5e6009a9fb"},"schema_version":"1.0","source":{"id":"1104.4570","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.4570","created_at":"2026-05-18T02:02:15Z"},{"alias_kind":"arxiv_version","alias_value":"1104.4570v1","created_at":"2026-05-18T02:02:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.4570","created_at":"2026-05-18T02:02:15Z"},{"alias_kind":"pith_short_12","alias_value":"D3X2YAWHMHHK","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_16","alias_value":"D3X2YAWHMHHK26DG","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_8","alias_value":"D3X2YAWH","created_at":"2026-05-18T12:26:26Z"}],"graph_snapshots":[{"event_id":"sha256:b05391586ad3e050e942796caf6fc8d1a8f6b748e7ef94c6921e4208d3e52f7c","target":"graph","created_at":"2026-05-18T02:02:15Z","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 effects of a magnetic field ($h$) and a space modulation ($\\delta$) on the magnetic properties of a one dimensional antiferromagnetic-ferromagnetic Heisenberg spin-1/2 model have been studied by means of numerical exact diagonalization of finite size systems, nonlinear sigma model and bosonization approach. The space modulation is considered on the antiferromagnetic couplings. At $\\delta=0$, the model is mapped to a gapless L\\\"{u}ttinger liquid phase by increasing the magnetic field. However, the space modulation induces a new gap in the spectrum of the system and the system experiences di","authors_text":"Jahanfar Abouie, Saeed Mahdavifar","cross_cats":["cond-mat.stat-mech","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2011-04-23T16:19:07Z","title":"Effects of a space modulation on the behavior of a 1D alternating Heisenberg spin-1/2 model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.4570","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":"sha256:037cceb9f16fa2a03062e1f33c3cee42198fb168bac313b0dc64aa8f8dd90b70","target":"record","created_at":"2026-05-18T02:02:15Z","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":"1c5b498406f01b8ca5390d500ab0b0293aa0875df2ebe5305c60ed4741111ed7","cross_cats_sorted":["cond-mat.stat-mech","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2011-04-23T16:19:07Z","title_canon_sha256":"eca85c164ba00d405c1188b09535ee36ab5465a1a0d3f0789e9f8d5e6009a9fb"},"schema_version":"1.0","source":{"id":"1104.4570","kind":"arxiv","version":1}},"canonical_sha256":"1eefac02c761cead786610afeff308e1541072d5c711451123546ac0cb566637","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1eefac02c761cead786610afeff308e1541072d5c711451123546ac0cb566637","first_computed_at":"2026-05-18T02:02:15.798302Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:02:15.798302Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Jeufw2hdUbSQu9nHZG9YYDqztFYPcLrFFklhnj9SW62reW3ckN7X5Epspi3nymn7P/oclUWUuGwmqJjNL1wmAA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:02:15.798891Z","signed_message":"canonical_sha256_bytes"},"source_id":"1104.4570","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:037cceb9f16fa2a03062e1f33c3cee42198fb168bac313b0dc64aa8f8dd90b70","sha256:b05391586ad3e050e942796caf6fc8d1a8f6b748e7ef94c6921e4208d3e52f7c"],"state_sha256":"bbc3a82320e4fed988165254d4b76222e48349f521e8f85408c8e7399bd7f038"}