{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:RTCXQGPNEL2LOMMYXMNSBHFIY7","short_pith_number":"pith:RTCXQGPN","canonical_record":{"source":{"id":"1601.00371","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2016-01-04T02:59:48Z","cross_cats_sorted":["cond-mat.mes-hall","quant-ph"],"title_canon_sha256":"a55a410e0d93c9b2bfe19689e99a672fbf9afad05acb353e3c10c078ac89ad85","abstract_canon_sha256":"b4c0a882ae2b141fc4207afe5492ac7c76e8e681521111949f1b33aaadaadd7f"},"schema_version":"1.0"},"canonical_sha256":"8cc57819ed22f4b73198bb1b209ca8c7fce7bd5d25fb68997ae70cbd456f1d49","source":{"kind":"arxiv","id":"1601.00371","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.00371","created_at":"2026-05-18T01:16:34Z"},{"alias_kind":"arxiv_version","alias_value":"1601.00371v2","created_at":"2026-05-18T01:16:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.00371","created_at":"2026-05-18T01:16:34Z"},{"alias_kind":"pith_short_12","alias_value":"RTCXQGPNEL2L","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_16","alias_value":"RTCXQGPNEL2LOMMY","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_8","alias_value":"RTCXQGPN","created_at":"2026-05-18T12:30:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:RTCXQGPNEL2LOMMYXMNSBHFIY7","target":"record","payload":{"canonical_record":{"source":{"id":"1601.00371","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2016-01-04T02:59:48Z","cross_cats_sorted":["cond-mat.mes-hall","quant-ph"],"title_canon_sha256":"a55a410e0d93c9b2bfe19689e99a672fbf9afad05acb353e3c10c078ac89ad85","abstract_canon_sha256":"b4c0a882ae2b141fc4207afe5492ac7c76e8e681521111949f1b33aaadaadd7f"},"schema_version":"1.0"},"canonical_sha256":"8cc57819ed22f4b73198bb1b209ca8c7fce7bd5d25fb68997ae70cbd456f1d49","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:16:34.733181Z","signature_b64":"DRT8/dwCIaTfYc8oxhqbjg/mPF1CchhzfHLY17w0h6hHbsEgDdVsRXVx60OZyY3RP4/tkXD/F8jPesigM04DDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8cc57819ed22f4b73198bb1b209ca8c7fce7bd5d25fb68997ae70cbd456f1d49","last_reissued_at":"2026-05-18T01:16:34.732484Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:16:34.732484Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1601.00371","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:16:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pEV+WbN7ewghBVWHPaqeuVvxx3uQNUbr2lSMBWK0fxIeV2b+EsEBK/Si948SuzlNv9YHXRxcWh8hskwgBEdhCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T20:42:04.813155Z"},"content_sha256":"c163f7123cc6949f7f7c091860026144f289ecf63ef600ed7ee9362eabfba12a","schema_version":"1.0","event_id":"sha256:c163f7123cc6949f7f7c091860026144f289ecf63ef600ed7ee9362eabfba12a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:RTCXQGPNEL2LOMMYXMNSBHFIY7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum simulation of exotic PT-invariant topological nodal loop bands with ultracold atoms in an optical lattice","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall","quant-ph"],"primary_cat":"cond-mat.quant-gas","authors_text":"Dan-Wei Zhang, Rui-Bin Liu, Shi-Liang Zhu, Y. X. Zhao, Z. D. Wang, Zheng-Yuan Xue","submitted_at":"2016-01-04T02:59:48Z","abstract_excerpt":"Since the well-known PT symmetry has its fundamental significance and implication in physics, where PT denotes the combined operation of space-inversion P and time-reversal T, it is extremely important and intriguing to completely classify exotic PT-invariant topological metals and to physically realize them. Here we, for the first time, establish a rigorous classification of topological metals that are protected by the PT symmetry using KO-theory. As a physically realistic example, a PT-invariant nodal loop (NL) model in a 3D Brillouin zone is constructed, whose topological stability is revea"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.00371","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:16:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d33WcbFxLWbHaMwATnmYiLJzwR+dvpyuhaaJQXk62RF9bEZkYJ1o+hCJN+gFIv45IYhqQuLhxWo+P4KSvyTsBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T20:42:04.813803Z"},"content_sha256":"a7614b332b26a1875b782a567f99cbf2986631c2128bc2bc632220eaff3ebb99","schema_version":"1.0","event_id":"sha256:a7614b332b26a1875b782a567f99cbf2986631c2128bc2bc632220eaff3ebb99"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RTCXQGPNEL2LOMMYXMNSBHFIY7/bundle.json","state_url":"https://pith.science/pith/RTCXQGPNEL2LOMMYXMNSBHFIY7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RTCXQGPNEL2LOMMYXMNSBHFIY7/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":"2026-05-26T20:42:04Z","links":{"resolver":"https://pith.science/pith/RTCXQGPNEL2LOMMYXMNSBHFIY7","bundle":"https://pith.science/pith/RTCXQGPNEL2LOMMYXMNSBHFIY7/bundle.json","state":"https://pith.science/pith/RTCXQGPNEL2LOMMYXMNSBHFIY7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RTCXQGPNEL2LOMMYXMNSBHFIY7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:RTCXQGPNEL2LOMMYXMNSBHFIY7","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":"b4c0a882ae2b141fc4207afe5492ac7c76e8e681521111949f1b33aaadaadd7f","cross_cats_sorted":["cond-mat.mes-hall","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2016-01-04T02:59:48Z","title_canon_sha256":"a55a410e0d93c9b2bfe19689e99a672fbf9afad05acb353e3c10c078ac89ad85"},"schema_version":"1.0","source":{"id":"1601.00371","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.00371","created_at":"2026-05-18T01:16:34Z"},{"alias_kind":"arxiv_version","alias_value":"1601.00371v2","created_at":"2026-05-18T01:16:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.00371","created_at":"2026-05-18T01:16:34Z"},{"alias_kind":"pith_short_12","alias_value":"RTCXQGPNEL2L","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_16","alias_value":"RTCXQGPNEL2LOMMY","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_8","alias_value":"RTCXQGPN","created_at":"2026-05-18T12:30:41Z"}],"graph_snapshots":[{"event_id":"sha256:a7614b332b26a1875b782a567f99cbf2986631c2128bc2bc632220eaff3ebb99","target":"graph","created_at":"2026-05-18T01:16:34Z","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":"Since the well-known PT symmetry has its fundamental significance and implication in physics, where PT denotes the combined operation of space-inversion P and time-reversal T, it is extremely important and intriguing to completely classify exotic PT-invariant topological metals and to physically realize them. Here we, for the first time, establish a rigorous classification of topological metals that are protected by the PT symmetry using KO-theory. As a physically realistic example, a PT-invariant nodal loop (NL) model in a 3D Brillouin zone is constructed, whose topological stability is revea","authors_text":"Dan-Wei Zhang, Rui-Bin Liu, Shi-Liang Zhu, Y. X. Zhao, Z. D. Wang, Zheng-Yuan Xue","cross_cats":["cond-mat.mes-hall","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2016-01-04T02:59:48Z","title":"Quantum simulation of exotic PT-invariant topological nodal loop bands with ultracold atoms in an optical lattice"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.00371","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:c163f7123cc6949f7f7c091860026144f289ecf63ef600ed7ee9362eabfba12a","target":"record","created_at":"2026-05-18T01:16:34Z","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":"b4c0a882ae2b141fc4207afe5492ac7c76e8e681521111949f1b33aaadaadd7f","cross_cats_sorted":["cond-mat.mes-hall","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2016-01-04T02:59:48Z","title_canon_sha256":"a55a410e0d93c9b2bfe19689e99a672fbf9afad05acb353e3c10c078ac89ad85"},"schema_version":"1.0","source":{"id":"1601.00371","kind":"arxiv","version":2}},"canonical_sha256":"8cc57819ed22f4b73198bb1b209ca8c7fce7bd5d25fb68997ae70cbd456f1d49","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8cc57819ed22f4b73198bb1b209ca8c7fce7bd5d25fb68997ae70cbd456f1d49","first_computed_at":"2026-05-18T01:16:34.732484Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:16:34.732484Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DRT8/dwCIaTfYc8oxhqbjg/mPF1CchhzfHLY17w0h6hHbsEgDdVsRXVx60OZyY3RP4/tkXD/F8jPesigM04DDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:16:34.733181Z","signed_message":"canonical_sha256_bytes"},"source_id":"1601.00371","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c163f7123cc6949f7f7c091860026144f289ecf63ef600ed7ee9362eabfba12a","sha256:a7614b332b26a1875b782a567f99cbf2986631c2128bc2bc632220eaff3ebb99"],"state_sha256":"5a2c28146e18a83302cb3bbc646af01642f4bddbf0965fdf5e9dccd7d1c249ab"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rcZhfyx3Xv66ybIDr2TVjNRnaNI8ifiYuWdv/EO40uizoBQ6YJpkM3oseM0q2TyDEKA0+51xh5293BFb/CsXCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T20:42:04.817100Z","bundle_sha256":"38dc4b4e7a477321c0d4f07754889526c8877a3bfa6097d186b9c8b342b5ea03"}}