{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:36KYBPAMJHINTOTWC3MYTCL5JG","short_pith_number":"pith:36KYBPAM","schema_version":"1.0","canonical_sha256":"df9580bc0c49d0d9ba7616d989897d49ae81a443d50fc22184c04d711088e87f","source":{"kind":"arxiv","id":"1506.06176","version":3},"attestation_state":"computed","paper":{"title":"Spin nematic order in antiferromagnetic spinor condensates","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.quant-gas","authors_text":"Andrea Invernizzi, Camille Frapolli, Fabrice Gerbier, Jean Dalibard, Tilman Zibold, Vincent Corre","submitted_at":"2015-06-19T22:55:34Z","abstract_excerpt":"Large spin systems can exhibit unconventional types of magnetic ordering different from the ferromagnetic or N\\'eel-like antiferromagnetic order commonly found in spin 1/2 systems. Spin-nematic phases, for instance, do not break time-reversal invariance and their magnetic order parameter is characterized by a second rank tensor with the symmetry of an ellipsoid. Here we show direct experimental evidence for spin-nematic ordering in a spin-1 Bose-Einstein condensate of sodium atoms with antiferromagnetic interactions. In a mean field description this order is enforced by locking the relative ph"},"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":"1506.06176","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2015-06-19T22:55:34Z","cross_cats_sorted":[],"title_canon_sha256":"fe329858c7f272a18d0d02187f14de6f23c5f2ac50ef280b1f77332a76a8e895","abstract_canon_sha256":"21d65e3837104ceda28e51bf4524fc6fe03529b692fe201da89ce11a084f34bf"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:16:54.726014Z","signature_b64":"H3k/LXzZ0KXyr5wcSxrXOCWwKyC91rXa1abNx9cmXZ7tGgAhf7haPSib+VuoW95quw51HeH4VDxedIXecD1CDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"df9580bc0c49d0d9ba7616d989897d49ae81a443d50fc22184c04d711088e87f","last_reissued_at":"2026-05-18T01:16:54.725218Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:16:54.725218Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Spin nematic order in antiferromagnetic spinor condensates","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.quant-gas","authors_text":"Andrea Invernizzi, Camille Frapolli, Fabrice Gerbier, Jean Dalibard, Tilman Zibold, Vincent Corre","submitted_at":"2015-06-19T22:55:34Z","abstract_excerpt":"Large spin systems can exhibit unconventional types of magnetic ordering different from the ferromagnetic or N\\'eel-like antiferromagnetic order commonly found in spin 1/2 systems. Spin-nematic phases, for instance, do not break time-reversal invariance and their magnetic order parameter is characterized by a second rank tensor with the symmetry of an ellipsoid. Here we show direct experimental evidence for spin-nematic ordering in a spin-1 Bose-Einstein condensate of sodium atoms with antiferromagnetic interactions. In a mean field description this order is enforced by locking the relative ph"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.06176","kind":"arxiv","version":3},"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":"1506.06176","created_at":"2026-05-18T01:16:54.725371+00:00"},{"alias_kind":"arxiv_version","alias_value":"1506.06176v3","created_at":"2026-05-18T01:16:54.725371+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.06176","created_at":"2026-05-18T01:16:54.725371+00:00"},{"alias_kind":"pith_short_12","alias_value":"36KYBPAMJHIN","created_at":"2026-05-18T12:29:02.477457+00:00"},{"alias_kind":"pith_short_16","alias_value":"36KYBPAMJHINTOTW","created_at":"2026-05-18T12:29:02.477457+00:00"},{"alias_kind":"pith_short_8","alias_value":"36KYBPAM","created_at":"2026-05-18T12:29:02.477457+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/36KYBPAMJHINTOTWC3MYTCL5JG","json":"https://pith.science/pith/36KYBPAMJHINTOTWC3MYTCL5JG.json","graph_json":"https://pith.science/api/pith-number/36KYBPAMJHINTOTWC3MYTCL5JG/graph.json","events_json":"https://pith.science/api/pith-number/36KYBPAMJHINTOTWC3MYTCL5JG/events.json","paper":"https://pith.science/paper/36KYBPAM"},"agent_actions":{"view_html":"https://pith.science/pith/36KYBPAMJHINTOTWC3MYTCL5JG","download_json":"https://pith.science/pith/36KYBPAMJHINTOTWC3MYTCL5JG.json","view_paper":"https://pith.science/paper/36KYBPAM","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1506.06176&json=true","fetch_graph":"https://pith.science/api/pith-number/36KYBPAMJHINTOTWC3MYTCL5JG/graph.json","fetch_events":"https://pith.science/api/pith-number/36KYBPAMJHINTOTWC3MYTCL5JG/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/36KYBPAMJHINTOTWC3MYTCL5JG/action/timestamp_anchor","attest_storage":"https://pith.science/pith/36KYBPAMJHINTOTWC3MYTCL5JG/action/storage_attestation","attest_author":"https://pith.science/pith/36KYBPAMJHINTOTWC3MYTCL5JG/action/author_attestation","sign_citation":"https://pith.science/pith/36KYBPAMJHINTOTWC3MYTCL5JG/action/citation_signature","submit_replication":"https://pith.science/pith/36KYBPAMJHINTOTWC3MYTCL5JG/action/replication_record"}},"created_at":"2026-05-18T01:16:54.725371+00:00","updated_at":"2026-05-18T01:16:54.725371+00:00"}