{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:MHAMBR44AYQKYSVLU5OMG4DT6J","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":"b333f8776e7898d15b8bce71296f9c5d93203a0c4a015b5d5bc2673f1734ad79","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-07-01T12:01:36Z","title_canon_sha256":"475caf06eba949bc624af06d5d436e96fc25ab59ecca0399659cdd68f975205b"},"schema_version":"1.0","source":{"id":"1807.00318","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.00318","created_at":"2026-05-18T00:03:41Z"},{"alias_kind":"arxiv_version","alias_value":"1807.00318v2","created_at":"2026-05-18T00:03:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.00318","created_at":"2026-05-18T00:03:41Z"},{"alias_kind":"pith_short_12","alias_value":"MHAMBR44AYQK","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_16","alias_value":"MHAMBR44AYQKYSVL","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_8","alias_value":"MHAMBR44","created_at":"2026-05-18T12:32:37Z"}],"graph_snapshots":[{"event_id":"sha256:2ad06edf63f6f9db1fc7ac2a56d33c6d1834a81845682eadee58620dec134903","target":"graph","created_at":"2026-05-18T00:03:41Z","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":"Using the infinite Projected Entangled Pair States (iPEPS) algorithm, we study the ground-state properties of the spin-$1/2$ quantum Heisenberg antiferromagnet on the star lattice in the thermodynamic limit. By analyzing the ground-state energy of the two inequivalent bonds of the lattice in different unit-cell structures, we identify two competing Valence-Bond-Solid (VBS) phases for different antiferromagnetic Heisenberg exchange couplings. More precisely, we observe (i) a VBS state which respects the full symmetries of the Hamiltonian, and (ii) a resonating VBS state which, in contrast to pr","authors_text":"Roman Orus, Saeed S. Jahromi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-07-01T12:01:36Z","title":"Spin-$\\frac{1}{2}$ Heisenberg antiferromagnet on the star lattice: Competing valence-bond-solid phases studied by means of tensor networks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.00318","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:f8f393726e42e0df5196f5f813615e96547e9b434675876a3d25a6225163b2c9","target":"record","created_at":"2026-05-18T00:03:41Z","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":"b333f8776e7898d15b8bce71296f9c5d93203a0c4a015b5d5bc2673f1734ad79","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-07-01T12:01:36Z","title_canon_sha256":"475caf06eba949bc624af06d5d436e96fc25ab59ecca0399659cdd68f975205b"},"schema_version":"1.0","source":{"id":"1807.00318","kind":"arxiv","version":2}},"canonical_sha256":"61c0c0c79c0620ac4aaba75cc37073f25bd20ae7e519d10698ad27f779257bac","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"61c0c0c79c0620ac4aaba75cc37073f25bd20ae7e519d10698ad27f779257bac","first_computed_at":"2026-05-18T00:03:41.162710Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:03:41.162710Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9cPLcUf6/+I2KFyaEa8AbJu6whBINUoc/oL/HO3RIMqBbEjSgTusBjlwT0bllYMI2N98sqcX6onFZJkZME1KBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:03:41.163172Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.00318","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f8f393726e42e0df5196f5f813615e96547e9b434675876a3d25a6225163b2c9","sha256:2ad06edf63f6f9db1fc7ac2a56d33c6d1834a81845682eadee58620dec134903"],"state_sha256":"d3ac3803e3257663f787990977ec6cf333a5ac98de270656853e84138cb6c65e"}