{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:SCJTLGG3W6L3RYLDWHAQFPNH7O","short_pith_number":"pith:SCJTLGG3","canonical_record":{"source":{"id":"1808.07428","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2018-08-22T16:25:27Z","cross_cats_sorted":["physics.atom-ph","quant-ph"],"title_canon_sha256":"0374491966f205e9baf070d666c85f28688ab3cad86c63673c32cf49ef5c049d","abstract_canon_sha256":"2516bae736c73ece7d8a4803df5f1c88b40ffc25725db9f0cacb24ded9354f72"},"schema_version":"1.0"},"canonical_sha256":"90933598dbb797b8e163b1c102bda7fb8be99a57be627da47bf94a9a08318937","source":{"kind":"arxiv","id":"1808.07428","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.07428","created_at":"2026-07-04T23:50:43Z"},{"alias_kind":"arxiv_version","alias_value":"1808.07428v3","created_at":"2026-07-04T23:50:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.07428","created_at":"2026-07-04T23:50:43Z"},{"alias_kind":"pith_short_12","alias_value":"SCJTLGG3W6L3","created_at":"2026-07-04T23:50:43Z"},{"alias_kind":"pith_short_16","alias_value":"SCJTLGG3W6L3RYLD","created_at":"2026-07-04T23:50:43Z"},{"alias_kind":"pith_short_8","alias_value":"SCJTLGG3","created_at":"2026-07-04T23:50:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:SCJTLGG3W6L3RYLDWHAQFPNH7O","target":"record","payload":{"canonical_record":{"source":{"id":"1808.07428","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2018-08-22T16:25:27Z","cross_cats_sorted":["physics.atom-ph","quant-ph"],"title_canon_sha256":"0374491966f205e9baf070d666c85f28688ab3cad86c63673c32cf49ef5c049d","abstract_canon_sha256":"2516bae736c73ece7d8a4803df5f1c88b40ffc25725db9f0cacb24ded9354f72"},"schema_version":"1.0"},"canonical_sha256":"90933598dbb797b8e163b1c102bda7fb8be99a57be627da47bf94a9a08318937","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T23:50:43.428531Z","signature_b64":"XYBfkERKmnfuwiHH2bgibkh9irjCFvhQMCjocNCkRS9t15H0uCVq7apusqU1p1GVweeKdQeXScHE9MbuXbLPAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"90933598dbb797b8e163b1c102bda7fb8be99a57be627da47bf94a9a08318937","last_reissued_at":"2026-07-04T23:50:43.428158Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T23:50:43.428158Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1808.07428","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T23:50:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g4B9fo5vwkBqNpJvoXAlE/ipuc5dqLyTpHidJ5m4kKinuHTH2T+Ct4yiDlaYOTKmX4n6iBFHYdNZ02pc4KtNBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T10:20:08.927586Z"},"content_sha256":"1da4c2490216e12e5a163c264f32b3650e2e6df611646706c262c4b9fb7d1e61","schema_version":"1.0","event_id":"sha256:1da4c2490216e12e5a163c264f32b3650e2e6df611646706c262c4b9fb7d1e61"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:SCJTLGG3W6L3RYLDWHAQFPNH7O","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Observation of nodal-line semimetal with ultracold fermions in an optical lattice","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.atom-ph","quant-ph"],"primary_cat":"cond-mat.quant-gas","authors_text":"Bo Song, Chengdong He, Gyu-Boong Jo, Long Zhang, Sen Niu, Xiong-jun Liu, Zejian Ren","submitted_at":"2018-08-22T16:25:27Z","abstract_excerpt":"Observation of topological phases beyond two-dimension (2D) has been an open challenge for ultracold atoms. Here, we realize for the first time a 3D spin-orbit coupled nodal-line semimetal in an optical lattice and observe the bulk line nodes with ultracold fermions. The realized topological semimetal exhibits an emergent magnetic group symmetry. This allows to detect the nodal lines by effectively reconstructing the 3D topological band from a series of measurements of integrated spin textures, which precisely render spin textures on the parameter-tuned magnetic-group-symmetric planes. The det"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.07428","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1808.07428/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T23:50:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mDVvG/V4xMjCzXFZvCAlI6nb3SiSXfVR01D8qJ8nPHDetcgVrg6UIPKW2RC46MHeFZbsdkOWDff6rET5P5AiAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T10:20:08.927957Z"},"content_sha256":"0b807b3d2e5eabe0884d311866e758d394939399db3bda7d71b88380d588364f","schema_version":"1.0","event_id":"sha256:0b807b3d2e5eabe0884d311866e758d394939399db3bda7d71b88380d588364f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SCJTLGG3W6L3RYLDWHAQFPNH7O/bundle.json","state_url":"https://pith.science/pith/SCJTLGG3W6L3RYLDWHAQFPNH7O/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SCJTLGG3W6L3RYLDWHAQFPNH7O/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-07-07T10:20:08Z","links":{"resolver":"https://pith.science/pith/SCJTLGG3W6L3RYLDWHAQFPNH7O","bundle":"https://pith.science/pith/SCJTLGG3W6L3RYLDWHAQFPNH7O/bundle.json","state":"https://pith.science/pith/SCJTLGG3W6L3RYLDWHAQFPNH7O/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SCJTLGG3W6L3RYLDWHAQFPNH7O/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:SCJTLGG3W6L3RYLDWHAQFPNH7O","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":"2516bae736c73ece7d8a4803df5f1c88b40ffc25725db9f0cacb24ded9354f72","cross_cats_sorted":["physics.atom-ph","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2018-08-22T16:25:27Z","title_canon_sha256":"0374491966f205e9baf070d666c85f28688ab3cad86c63673c32cf49ef5c049d"},"schema_version":"1.0","source":{"id":"1808.07428","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.07428","created_at":"2026-07-04T23:50:43Z"},{"alias_kind":"arxiv_version","alias_value":"1808.07428v3","created_at":"2026-07-04T23:50:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.07428","created_at":"2026-07-04T23:50:43Z"},{"alias_kind":"pith_short_12","alias_value":"SCJTLGG3W6L3","created_at":"2026-07-04T23:50:43Z"},{"alias_kind":"pith_short_16","alias_value":"SCJTLGG3W6L3RYLD","created_at":"2026-07-04T23:50:43Z"},{"alias_kind":"pith_short_8","alias_value":"SCJTLGG3","created_at":"2026-07-04T23:50:43Z"}],"graph_snapshots":[{"event_id":"sha256:0b807b3d2e5eabe0884d311866e758d394939399db3bda7d71b88380d588364f","target":"graph","created_at":"2026-07-04T23:50:43Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1808.07428/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Observation of topological phases beyond two-dimension (2D) has been an open challenge for ultracold atoms. Here, we realize for the first time a 3D spin-orbit coupled nodal-line semimetal in an optical lattice and observe the bulk line nodes with ultracold fermions. The realized topological semimetal exhibits an emergent magnetic group symmetry. This allows to detect the nodal lines by effectively reconstructing the 3D topological band from a series of measurements of integrated spin textures, which precisely render spin textures on the parameter-tuned magnetic-group-symmetric planes. The det","authors_text":"Bo Song, Chengdong He, Gyu-Boong Jo, Long Zhang, Sen Niu, Xiong-jun Liu, Zejian Ren","cross_cats":["physics.atom-ph","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2018-08-22T16:25:27Z","title":"Observation of nodal-line semimetal with ultracold fermions in an optical lattice"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.07428","kind":"arxiv","version":3},"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":"sha256:1da4c2490216e12e5a163c264f32b3650e2e6df611646706c262c4b9fb7d1e61","target":"record","created_at":"2026-07-04T23:50:43Z","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":"2516bae736c73ece7d8a4803df5f1c88b40ffc25725db9f0cacb24ded9354f72","cross_cats_sorted":["physics.atom-ph","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2018-08-22T16:25:27Z","title_canon_sha256":"0374491966f205e9baf070d666c85f28688ab3cad86c63673c32cf49ef5c049d"},"schema_version":"1.0","source":{"id":"1808.07428","kind":"arxiv","version":3}},"canonical_sha256":"90933598dbb797b8e163b1c102bda7fb8be99a57be627da47bf94a9a08318937","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"90933598dbb797b8e163b1c102bda7fb8be99a57be627da47bf94a9a08318937","first_computed_at":"2026-07-04T23:50:43.428158Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T23:50:43.428158Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XYBfkERKmnfuwiHH2bgibkh9irjCFvhQMCjocNCkRS9t15H0uCVq7apusqU1p1GVweeKdQeXScHE9MbuXbLPAg==","signature_status":"signed_v1","signed_at":"2026-07-04T23:50:43.428531Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.07428","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1da4c2490216e12e5a163c264f32b3650e2e6df611646706c262c4b9fb7d1e61","sha256:0b807b3d2e5eabe0884d311866e758d394939399db3bda7d71b88380d588364f"],"state_sha256":"7998f7717ddc7620db8e8cd15d301fd31f42ae20eb1e01afacd85b8df182ba11"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"actB/gBSqThDrPz0GCYxp/x5wocin9eAvKqpoYLwmo2X030EGPgmxXqO2ojVNWzwaPUmuiqttlmqOIg5S40jBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T10:20:08.929964Z","bundle_sha256":"a4209bd0893e2deef50b3e7385e3b01d47a1693ff82b7a49462d1c661e9c42c6"}}