{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:UX3FUEKWXYEWXJQH5BWDGZRVRW","short_pith_number":"pith:UX3FUEKW","schema_version":"1.0","canonical_sha256":"a5f65a1156be096ba607e86c3366358dac12dd2007ed203c92c1f8e032185aca","source":{"kind":"arxiv","id":"1207.1783","version":2},"attestation_state":"computed","paper":{"title":"Absence of a Spin Liquid Phase in the Hubbard Model on the Honeycomb Lattice","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"Sandro Sorella, Seiji Yunoki, Yuichi Otsuka","submitted_at":"2012-07-07T09:36:53Z","abstract_excerpt":"A spin liquid is a novel quantum state of matter with no conventional order parameter where a finite charge gap exists even though the band theory would predict metallic behavior. Finding a stable spin liquid in two or higher spatial dimensions is one of the most challenging and debated issues in condensed matter physics. Very recently, it has been reported that a model of graphene, i.e., the Hubbard model on the honeycomb lattice, can show a spin liquid ground state in a wide region of the phase diagram, between a semi-metal (SM) and an antiferromagnetic insulator (AFMI). Here, by performing "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1207.1783","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-07-07T09:36:53Z","cross_cats_sorted":[],"title_canon_sha256":"3acefb56f9f57ce0be29882a4b19391a6696346fea3d9dabe5b83eb0ab5dd756","abstract_canon_sha256":"9490867056821340827e44bb66a853bb6e8682b4f680f430a9d55fcfdcafa06d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:38:12.468312Z","signature_b64":"FZWrGrHvZEWuxhHVZebByo4EtYyAcrnbDTFLJmzcXtmM3RQB62L2uGBw8+EMzeh1smYuLuY0D8KcsXp7qH9LAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a5f65a1156be096ba607e86c3366358dac12dd2007ed203c92c1f8e032185aca","last_reissued_at":"2026-05-18T03:38:12.467897Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:38:12.467897Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Absence of a Spin Liquid Phase in the Hubbard Model on the Honeycomb Lattice","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"Sandro Sorella, Seiji Yunoki, Yuichi Otsuka","submitted_at":"2012-07-07T09:36:53Z","abstract_excerpt":"A spin liquid is a novel quantum state of matter with no conventional order parameter where a finite charge gap exists even though the band theory would predict metallic behavior. Finding a stable spin liquid in two or higher spatial dimensions is one of the most challenging and debated issues in condensed matter physics. Very recently, it has been reported that a model of graphene, i.e., the Hubbard model on the honeycomb lattice, can show a spin liquid ground state in a wide region of the phase diagram, between a semi-metal (SM) and an antiferromagnetic insulator (AFMI). Here, by performing "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.1783","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1207.1783","created_at":"2026-05-18T03:38:12.467960+00:00"},{"alias_kind":"arxiv_version","alias_value":"1207.1783v2","created_at":"2026-05-18T03:38:12.467960+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.1783","created_at":"2026-05-18T03:38:12.467960+00:00"},{"alias_kind":"pith_short_12","alias_value":"UX3FUEKWXYEW","created_at":"2026-05-18T12:27:25.539911+00:00"},{"alias_kind":"pith_short_16","alias_value":"UX3FUEKWXYEWXJQH","created_at":"2026-05-18T12:27:25.539911+00:00"},{"alias_kind":"pith_short_8","alias_value":"UX3FUEKW","created_at":"2026-05-18T12:27:25.539911+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/UX3FUEKWXYEWXJQH5BWDGZRVRW","json":"https://pith.science/pith/UX3FUEKWXYEWXJQH5BWDGZRVRW.json","graph_json":"https://pith.science/api/pith-number/UX3FUEKWXYEWXJQH5BWDGZRVRW/graph.json","events_json":"https://pith.science/api/pith-number/UX3FUEKWXYEWXJQH5BWDGZRVRW/events.json","paper":"https://pith.science/paper/UX3FUEKW"},"agent_actions":{"view_html":"https://pith.science/pith/UX3FUEKWXYEWXJQH5BWDGZRVRW","download_json":"https://pith.science/pith/UX3FUEKWXYEWXJQH5BWDGZRVRW.json","view_paper":"https://pith.science/paper/UX3FUEKW","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1207.1783&json=true","fetch_graph":"https://pith.science/api/pith-number/UX3FUEKWXYEWXJQH5BWDGZRVRW/graph.json","fetch_events":"https://pith.science/api/pith-number/UX3FUEKWXYEWXJQH5BWDGZRVRW/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/UX3FUEKWXYEWXJQH5BWDGZRVRW/action/timestamp_anchor","attest_storage":"https://pith.science/pith/UX3FUEKWXYEWXJQH5BWDGZRVRW/action/storage_attestation","attest_author":"https://pith.science/pith/UX3FUEKWXYEWXJQH5BWDGZRVRW/action/author_attestation","sign_citation":"https://pith.science/pith/UX3FUEKWXYEWXJQH5BWDGZRVRW/action/citation_signature","submit_replication":"https://pith.science/pith/UX3FUEKWXYEWXJQH5BWDGZRVRW/action/replication_record"}},"created_at":"2026-05-18T03:38:12.467960+00:00","updated_at":"2026-05-18T03:38:12.467960+00:00"}