{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:J2AYGK5H3Q6TGADQKGSJ4BWRRU","short_pith_number":"pith:J2AYGK5H","canonical_record":{"source":{"id":"1310.2123","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-10-08T13:08:24Z","cross_cats_sorted":["cond-mat.quant-gas","physics.atom-ph"],"title_canon_sha256":"b9d2eaa744019deb385956ad96942921d708909f626a02db42eb32f208899676","abstract_canon_sha256":"5a043c9af34b39175f81825bb3429bf9ef2b9142332a0e3b8a7464777df1a069"},"schema_version":"1.0"},"canonical_sha256":"4e81832ba7dc3d33007051a49e06d18d21a96f9611a20d48f7e217eae3def3cd","source":{"kind":"arxiv","id":"1310.2123","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.2123","created_at":"2026-05-18T01:47:13Z"},{"alias_kind":"arxiv_version","alias_value":"1310.2123v1","created_at":"2026-05-18T01:47:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.2123","created_at":"2026-05-18T01:47:13Z"},{"alias_kind":"pith_short_12","alias_value":"J2AYGK5H3Q6T","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"J2AYGK5H3Q6TGADQ","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"J2AYGK5H","created_at":"2026-05-18T12:27:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:J2AYGK5H3Q6TGADQKGSJ4BWRRU","target":"record","payload":{"canonical_record":{"source":{"id":"1310.2123","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-10-08T13:08:24Z","cross_cats_sorted":["cond-mat.quant-gas","physics.atom-ph"],"title_canon_sha256":"b9d2eaa744019deb385956ad96942921d708909f626a02db42eb32f208899676","abstract_canon_sha256":"5a043c9af34b39175f81825bb3429bf9ef2b9142332a0e3b8a7464777df1a069"},"schema_version":"1.0"},"canonical_sha256":"4e81832ba7dc3d33007051a49e06d18d21a96f9611a20d48f7e217eae3def3cd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:47:13.766289Z","signature_b64":"x7LaV27Qad7O6I+1ZKKYhRFO//Kkn2CwAmHyWxpDYIB3lt09sxN9THuwnptClui9TEskBd/L5kuvWANnRFqcAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4e81832ba7dc3d33007051a49e06d18d21a96f9611a20d48f7e217eae3def3cd","last_reissued_at":"2026-05-18T01:47:13.765449Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:47:13.765449Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1310.2123","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:47:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TWyxEzeV+MsJKF/EgwGOgRr8v5MFloGHCoek2zXCOPXiNOLOWVdaGwpkWFYexKr7eFXyboCBafFP/jcEvgVJBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T14:13:14.596734Z"},"content_sha256":"b225c6bceafc47dac3fabdba7df2ee95fa2d95e5c9b510216555616c2f2c1da1","schema_version":"1.0","event_id":"sha256:b225c6bceafc47dac3fabdba7df2ee95fa2d95e5c9b510216555616c2f2c1da1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:J2AYGK5H3Q6TGADQKGSJ4BWRRU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ground state of the double-well condensate for quantum metrology","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.quant-gas","physics.atom-ph"],"primary_cat":"quant-ph","authors_text":"Han Chen, Juha Javanainen","submitted_at":"2013-10-08T13:08:24Z","abstract_excerpt":"We discuss theoretically the ground state of a Bose-Einstein condensate with attractive atom-atom interactions in a double-well trap as a starting point of Heisenberg-limited atom interferometry. The dimensionless parameter governing the quality of the ground state for this purpose is identified. The near-degeneracy between the ground state and the first excited state severely curtails the prospects of the thermally prepared ground state in quantum metrology."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.2123","kind":"arxiv","version":1},"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":"2026-05-18T01:47:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zP5bMd+4dU08UVkjhF3WI4S37o7WtD6e0bOVFauabEUsBc8Ab/fh6S92/V50DjHtn7vBXeZW88wPUQUOifLwCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T14:13:14.597071Z"},"content_sha256":"6b039681e20c39ce2d766abc353716a79a78d39f8b9c94660c8c88c16e44761c","schema_version":"1.0","event_id":"sha256:6b039681e20c39ce2d766abc353716a79a78d39f8b9c94660c8c88c16e44761c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/J2AYGK5H3Q6TGADQKGSJ4BWRRU/bundle.json","state_url":"https://pith.science/pith/J2AYGK5H3Q6TGADQKGSJ4BWRRU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/J2AYGK5H3Q6TGADQKGSJ4BWRRU/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":"2026-05-28T14:13:14Z","links":{"resolver":"https://pith.science/pith/J2AYGK5H3Q6TGADQKGSJ4BWRRU","bundle":"https://pith.science/pith/J2AYGK5H3Q6TGADQKGSJ4BWRRU/bundle.json","state":"https://pith.science/pith/J2AYGK5H3Q6TGADQKGSJ4BWRRU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/J2AYGK5H3Q6TGADQKGSJ4BWRRU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:J2AYGK5H3Q6TGADQKGSJ4BWRRU","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":"5a043c9af34b39175f81825bb3429bf9ef2b9142332a0e3b8a7464777df1a069","cross_cats_sorted":["cond-mat.quant-gas","physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-10-08T13:08:24Z","title_canon_sha256":"b9d2eaa744019deb385956ad96942921d708909f626a02db42eb32f208899676"},"schema_version":"1.0","source":{"id":"1310.2123","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.2123","created_at":"2026-05-18T01:47:13Z"},{"alias_kind":"arxiv_version","alias_value":"1310.2123v1","created_at":"2026-05-18T01:47:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.2123","created_at":"2026-05-18T01:47:13Z"},{"alias_kind":"pith_short_12","alias_value":"J2AYGK5H3Q6T","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"J2AYGK5H3Q6TGADQ","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"J2AYGK5H","created_at":"2026-05-18T12:27:49Z"}],"graph_snapshots":[{"event_id":"sha256:6b039681e20c39ce2d766abc353716a79a78d39f8b9c94660c8c88c16e44761c","target":"graph","created_at":"2026-05-18T01:47:13Z","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":"We discuss theoretically the ground state of a Bose-Einstein condensate with attractive atom-atom interactions in a double-well trap as a starting point of Heisenberg-limited atom interferometry. The dimensionless parameter governing the quality of the ground state for this purpose is identified. The near-degeneracy between the ground state and the first excited state severely curtails the prospects of the thermally prepared ground state in quantum metrology.","authors_text":"Han Chen, Juha Javanainen","cross_cats":["cond-mat.quant-gas","physics.atom-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-10-08T13:08:24Z","title":"Ground state of the double-well condensate for quantum metrology"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.2123","kind":"arxiv","version":1},"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:b225c6bceafc47dac3fabdba7df2ee95fa2d95e5c9b510216555616c2f2c1da1","target":"record","created_at":"2026-05-18T01:47:13Z","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":"5a043c9af34b39175f81825bb3429bf9ef2b9142332a0e3b8a7464777df1a069","cross_cats_sorted":["cond-mat.quant-gas","physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-10-08T13:08:24Z","title_canon_sha256":"b9d2eaa744019deb385956ad96942921d708909f626a02db42eb32f208899676"},"schema_version":"1.0","source":{"id":"1310.2123","kind":"arxiv","version":1}},"canonical_sha256":"4e81832ba7dc3d33007051a49e06d18d21a96f9611a20d48f7e217eae3def3cd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4e81832ba7dc3d33007051a49e06d18d21a96f9611a20d48f7e217eae3def3cd","first_computed_at":"2026-05-18T01:47:13.765449Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:47:13.765449Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"x7LaV27Qad7O6I+1ZKKYhRFO//Kkn2CwAmHyWxpDYIB3lt09sxN9THuwnptClui9TEskBd/L5kuvWANnRFqcAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:47:13.766289Z","signed_message":"canonical_sha256_bytes"},"source_id":"1310.2123","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b225c6bceafc47dac3fabdba7df2ee95fa2d95e5c9b510216555616c2f2c1da1","sha256:6b039681e20c39ce2d766abc353716a79a78d39f8b9c94660c8c88c16e44761c"],"state_sha256":"faac84897bdcc97d65e4c514f93ae08de92691fdc464f1946d93be2d3c73ac4f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iDqZDWnfIBRVfiJU6z1oniSQmJ9T3a7lUVb2Xmfp2Y2NCPgHWjzW9jDqOv3eo9orfKOVzv4sLQ0ioMFuv4egCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T14:13:14.599038Z","bundle_sha256":"391781dd87273b6b0b936c06e056872ed3cbe2756c56de12ab3f097a84e19eed"}}