{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:IJ5YYRIJCCSVLR3XY4VVWHNHGX","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":"80574a4bdb95c75d68c79b0b2d9a71f0fcea8fbc92203a5988ca13a2526e7b07","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2014-03-17T12:48:53Z","title_canon_sha256":"14fae045cb8d041c6a980e1655bbedb6f8c6105cbf6e3b6a56cb2a3d0751e3f2"},"schema_version":"1.0","source":{"id":"1403.4081","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1403.4081","created_at":"2026-05-18T02:38:44Z"},{"alias_kind":"arxiv_version","alias_value":"1403.4081v2","created_at":"2026-05-18T02:38:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.4081","created_at":"2026-05-18T02:38:44Z"},{"alias_kind":"pith_short_12","alias_value":"IJ5YYRIJCCSV","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_16","alias_value":"IJ5YYRIJCCSVLR3X","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_8","alias_value":"IJ5YYRIJ","created_at":"2026-05-18T12:28:33Z"}],"graph_snapshots":[{"event_id":"sha256:c6933fc8ef21b86fcb5406befb3557265eda33f16ca95ee16ff1d44931d0a0cd","target":"graph","created_at":"2026-05-18T02:38:44Z","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 strongly correlated cuprate Cu$_2$OSeO$_3$ has recently been identified as the first insulating system exhibiting a skyrmion lattice phase. Using a microscopic multi-boson theory for its magnetic ground state and excitations, we establish the presence of two distinct types of modes: a low energy manifold that includes a gapless Goldstone mode and a set of weakly dispersive high-energy magnons. These spectral features are the most direct signatures of the fact that the essential magnetic building blocks of Cu$_2$OSeO$_3$ are not individual Cu spins, but rather weakly-coupled Cu$_4$ tetrahed","authors_text":"Ioannis Rousochatzakis, Jeroen van den Brink, Judit Romh\\'anyi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2014-03-17T12:48:53Z","title":"Entangled tetrahedron ground state and excitations of the magneto-electric skyrmion material Cu$_2$OSeO$_3$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.4081","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":"sha256:59c22043c69fe3fee61fb1a677d9bb9e54190d4157611fe96b3aab98fbe327ce","target":"record","created_at":"2026-05-18T02:38:44Z","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":"80574a4bdb95c75d68c79b0b2d9a71f0fcea8fbc92203a5988ca13a2526e7b07","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2014-03-17T12:48:53Z","title_canon_sha256":"14fae045cb8d041c6a980e1655bbedb6f8c6105cbf6e3b6a56cb2a3d0751e3f2"},"schema_version":"1.0","source":{"id":"1403.4081","kind":"arxiv","version":2}},"canonical_sha256":"427b8c450910a555c777c72b5b1da735f0606cb48dd1d74668175028ebedf586","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"427b8c450910a555c777c72b5b1da735f0606cb48dd1d74668175028ebedf586","first_computed_at":"2026-05-18T02:38:44.316520Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:38:44.316520Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"h04rxNgUGRFYXZI2VANoVrNKplSe7rEN3KJ4uguUSjmwO8PJvgblPQ20x32TaQGR45E4APh4vIC2uQepnSuGAw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:38:44.316958Z","signed_message":"canonical_sha256_bytes"},"source_id":"1403.4081","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:59c22043c69fe3fee61fb1a677d9bb9e54190d4157611fe96b3aab98fbe327ce","sha256:c6933fc8ef21b86fcb5406befb3557265eda33f16ca95ee16ff1d44931d0a0cd"],"state_sha256":"26f8571f40c0a333b968d9e33dd2ad95b846d873049ab678472e153c9068f464"}