{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:XW65JTABTBU7FFTHF43TTNVPU7","short_pith_number":"pith:XW65JTAB","canonical_record":{"source":{"id":"1912.02418","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2019-12-05T07:41:42Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"41ca092efea3dbe54dcfd4310796941c74d7ab58ba1dbce6a34c920ded37f630","abstract_canon_sha256":"90e93aa3b22b9a2ff2c11127dbfe259570d72fb341715c7763dfc4c21cb12c70"},"schema_version":"1.0"},"canonical_sha256":"bdbdd4cc019869f296672f3739b6afa7d23b3feebbaf70f7d4c2b1378a42cba7","source":{"kind":"arxiv","id":"1912.02418","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.02418","created_at":"2026-07-05T01:00:48Z"},{"alias_kind":"arxiv_version","alias_value":"1912.02418v2","created_at":"2026-07-05T01:00:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.02418","created_at":"2026-07-05T01:00:48Z"},{"alias_kind":"pith_short_12","alias_value":"XW65JTABTBU7","created_at":"2026-07-05T01:00:48Z"},{"alias_kind":"pith_short_16","alias_value":"XW65JTABTBU7FFTH","created_at":"2026-07-05T01:00:48Z"},{"alias_kind":"pith_short_8","alias_value":"XW65JTAB","created_at":"2026-07-05T01:00:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:XW65JTABTBU7FFTHF43TTNVPU7","target":"record","payload":{"canonical_record":{"source":{"id":"1912.02418","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2019-12-05T07:41:42Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"41ca092efea3dbe54dcfd4310796941c74d7ab58ba1dbce6a34c920ded37f630","abstract_canon_sha256":"90e93aa3b22b9a2ff2c11127dbfe259570d72fb341715c7763dfc4c21cb12c70"},"schema_version":"1.0"},"canonical_sha256":"bdbdd4cc019869f296672f3739b6afa7d23b3feebbaf70f7d4c2b1378a42cba7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:00:48.660581Z","signature_b64":"Gouu8XWNFxiCp4yETwnpNmu3InNTQ1n27nGg+t+4nAhyUr2Ofb6k2EznIIsO5mWnnCii0RfTyLJeWc+rmx2aCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bdbdd4cc019869f296672f3739b6afa7d23b3feebbaf70f7d4c2b1378a42cba7","last_reissued_at":"2026-07-05T01:00:48.660062Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:00:48.660062Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1912.02418","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":"2026-07-05T01:00:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YK0hsXFeyWQR0Bu2IUleVC8UYjDKiUH109Xd3zySC/Vnb3Nj4FOXXoa8oBQOmah7e2VrTWteFtcifVtH4guEDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T09:14:43.270988Z"},"content_sha256":"65cf49d2e46084bd4e3513182ce0fcf9fffb6f675396c311f35e08d5cd8f47e8","schema_version":"1.0","event_id":"sha256:65cf49d2e46084bd4e3513182ce0fcf9fffb6f675396c311f35e08d5cd8f47e8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:XW65JTABTBU7FFTHF43TTNVPU7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Supersensitive quantum sensor based on criticality in an antiferromagnetic spinor condensate","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"cond-mat.quant-gas","authors_text":"Emilia Witkowska, Luca Lepori, Safoura S. Mirkhalaf","submitted_at":"2019-12-05T07:41:42Z","abstract_excerpt":"We consider an antiferromagnetic Bose-Einstein condensate in a traverse magnetic field with a fixed macroscopic magnetization. The system exhibits two different critical behaviors corresponding to transitions from polar to broken-axisymmetry and from antiferromagnetic to broken-axisymmetry phases depending on the value of magnetization. We exploit both types of system criticality as a resource in the precise estimation of control parameter value. We quantify the achievable precision by the quantum Fisher information. We demonstrate supersensitivity and show that the precision scales with the n"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.02418","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1912.02418/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":"2026-07-05T01:00:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O16cuxWltNeM2dxE8orwiwS+E5CS4dqCQvM19tRUsQuV7tW1nTU+rxkd6v/7/vqLjFylp4HZV4vZKPANxf/DAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T09:14:43.271483Z"},"content_sha256":"5188f3a5f3921a27b4901db3c98074369ef67089a9c43648b0704aaffff14ee8","schema_version":"1.0","event_id":"sha256:5188f3a5f3921a27b4901db3c98074369ef67089a9c43648b0704aaffff14ee8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XW65JTABTBU7FFTHF43TTNVPU7/bundle.json","state_url":"https://pith.science/pith/XW65JTABTBU7FFTHF43TTNVPU7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XW65JTABTBU7FFTHF43TTNVPU7/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":"2026-08-11T09:14:43Z","links":{"resolver":"https://pith.science/pith/XW65JTABTBU7FFTHF43TTNVPU7","bundle":"https://pith.science/pith/XW65JTABTBU7FFTHF43TTNVPU7/bundle.json","state":"https://pith.science/pith/XW65JTABTBU7FFTHF43TTNVPU7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XW65JTABTBU7FFTHF43TTNVPU7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:XW65JTABTBU7FFTHF43TTNVPU7","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":"90e93aa3b22b9a2ff2c11127dbfe259570d72fb341715c7763dfc4c21cb12c70","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2019-12-05T07:41:42Z","title_canon_sha256":"41ca092efea3dbe54dcfd4310796941c74d7ab58ba1dbce6a34c920ded37f630"},"schema_version":"1.0","source":{"id":"1912.02418","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.02418","created_at":"2026-07-05T01:00:48Z"},{"alias_kind":"arxiv_version","alias_value":"1912.02418v2","created_at":"2026-07-05T01:00:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.02418","created_at":"2026-07-05T01:00:48Z"},{"alias_kind":"pith_short_12","alias_value":"XW65JTABTBU7","created_at":"2026-07-05T01:00:48Z"},{"alias_kind":"pith_short_16","alias_value":"XW65JTABTBU7FFTH","created_at":"2026-07-05T01:00:48Z"},{"alias_kind":"pith_short_8","alias_value":"XW65JTAB","created_at":"2026-07-05T01:00:48Z"}],"graph_snapshots":[{"event_id":"sha256:5188f3a5f3921a27b4901db3c98074369ef67089a9c43648b0704aaffff14ee8","target":"graph","created_at":"2026-07-05T01:00:48Z","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/1912.02418/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We consider an antiferromagnetic Bose-Einstein condensate in a traverse magnetic field with a fixed macroscopic magnetization. The system exhibits two different critical behaviors corresponding to transitions from polar to broken-axisymmetry and from antiferromagnetic to broken-axisymmetry phases depending on the value of magnetization. We exploit both types of system criticality as a resource in the precise estimation of control parameter value. We quantify the achievable precision by the quantum Fisher information. We demonstrate supersensitivity and show that the precision scales with the n","authors_text":"Emilia Witkowska, Luca Lepori, Safoura S. Mirkhalaf","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2019-12-05T07:41:42Z","title":"Supersensitive quantum sensor based on criticality in an antiferromagnetic spinor condensate"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.02418","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":"sha256:65cf49d2e46084bd4e3513182ce0fcf9fffb6f675396c311f35e08d5cd8f47e8","target":"record","created_at":"2026-07-05T01:00:48Z","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":"90e93aa3b22b9a2ff2c11127dbfe259570d72fb341715c7763dfc4c21cb12c70","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2019-12-05T07:41:42Z","title_canon_sha256":"41ca092efea3dbe54dcfd4310796941c74d7ab58ba1dbce6a34c920ded37f630"},"schema_version":"1.0","source":{"id":"1912.02418","kind":"arxiv","version":2}},"canonical_sha256":"bdbdd4cc019869f296672f3739b6afa7d23b3feebbaf70f7d4c2b1378a42cba7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bdbdd4cc019869f296672f3739b6afa7d23b3feebbaf70f7d4c2b1378a42cba7","first_computed_at":"2026-07-05T01:00:48.660062Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:00:48.660062Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Gouu8XWNFxiCp4yETwnpNmu3InNTQ1n27nGg+t+4nAhyUr2Ofb6k2EznIIsO5mWnnCii0RfTyLJeWc+rmx2aCw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:00:48.660581Z","signed_message":"canonical_sha256_bytes"},"source_id":"1912.02418","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:65cf49d2e46084bd4e3513182ce0fcf9fffb6f675396c311f35e08d5cd8f47e8","sha256:5188f3a5f3921a27b4901db3c98074369ef67089a9c43648b0704aaffff14ee8"],"state_sha256":"f209d74eb98e93e3d3d96570bb320913570f529e0b283693e6a1737baaaca3c9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lBgm0d5bEj4b8sNIlRrmT0esL8q7QqHaoFNmQdj01L72sPaPuFngHLpwEQvSjoQP2Ca4MsKqNqLZGsARfzeRCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T09:14:43.275653Z","bundle_sha256":"a6da3c260cb9b54306915528b1f7a67a2b9b0a54b51d2aae84df0925af23d3df"}}