{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:JQ6SC4DKAYTXTKO4RVX4NDZVK2","short_pith_number":"pith:JQ6SC4DK","canonical_record":{"source":{"id":"1301.2077","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-01-10T10:40:56Z","cross_cats_sorted":["cond-mat.quant-gas","hep-th"],"title_canon_sha256":"ab748e6f938d7db20d495faffc9a4454ecb5036ac14cf792c51b75b12ce60f72","abstract_canon_sha256":"ae935b5f9c7f4307bc94d033a406b5d2c691de5ca07f81a6b58c416bc2369903"},"schema_version":"1.0"},"canonical_sha256":"4c3d21706a062779a9dc8d6fc68f355696b31713341bbcc7734ebcbee3b2f9e6","source":{"kind":"arxiv","id":"1301.2077","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.2077","created_at":"2026-05-18T03:36:47Z"},{"alias_kind":"arxiv_version","alias_value":"1301.2077v1","created_at":"2026-05-18T03:36:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.2077","created_at":"2026-05-18T03:36:47Z"},{"alias_kind":"pith_short_12","alias_value":"JQ6SC4DKAYTX","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"JQ6SC4DKAYTXTKO4","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"JQ6SC4DK","created_at":"2026-05-18T12:27:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:JQ6SC4DKAYTXTKO4RVX4NDZVK2","target":"record","payload":{"canonical_record":{"source":{"id":"1301.2077","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-01-10T10:40:56Z","cross_cats_sorted":["cond-mat.quant-gas","hep-th"],"title_canon_sha256":"ab748e6f938d7db20d495faffc9a4454ecb5036ac14cf792c51b75b12ce60f72","abstract_canon_sha256":"ae935b5f9c7f4307bc94d033a406b5d2c691de5ca07f81a6b58c416bc2369903"},"schema_version":"1.0"},"canonical_sha256":"4c3d21706a062779a9dc8d6fc68f355696b31713341bbcc7734ebcbee3b2f9e6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:36:47.517298Z","signature_b64":"kg/ItwiDjk7npl/QVWJQx+sdJ1wDK2AuwVwiYpaIqb8U35fVrjZ4ZkdNw3QAgXtiiUzl0uPksTXaSctZgAHWBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4c3d21706a062779a9dc8d6fc68f355696b31713341bbcc7734ebcbee3b2f9e6","last_reissued_at":"2026-05-18T03:36:47.516905Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:36:47.516905Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1301.2077","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":"2026-05-18T03:36:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LJ4kTSBJXmjbCrth7c/PBY+3fuVCN21E+iSmdwn1zuEfb8einUuJqVy4hBUSyxWhLxhyjI6/lbzvJX15lZjoDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T09:33:25.573137Z"},"content_sha256":"2e38fded4081b3347db05e6951a0edcda32964af9ba3e57f0e11d79564f27d22","schema_version":"1.0","event_id":"sha256:2e38fded4081b3347db05e6951a0edcda32964af9ba3e57f0e11d79564f27d22"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:JQ6SC4DKAYTXTKO4RVX4NDZVK2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hawking effect in BECs acoustic white holes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.quant-gas","hep-th"],"primary_cat":"gr-qc","authors_text":"Alessandro Fabbri, Carlos Mayoral, Roberto Balbinot","submitted_at":"2013-01-10T10:40:56Z","abstract_excerpt":"Bogoliubov pseudoparticle creation in a BEC undergoing a WH like flow is investigated analytically in the case of a one dimensional geometry with stepwise homogeneous regions. Comparison of the results with those corresponding to a BH flow is performed. The implications for the analogous gravitational problem is discussed."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.2077","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":"2026-05-18T03:36:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YBs1sQGeoN3GmfO+7/Tr902O01cX18E3nFZJyRZGG3Upb+/OigCNrM4Rv1JC7vUA60Qke4EAFVHsZ/ro50VMAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T09:33:25.573789Z"},"content_sha256":"cdf8bed95cc1665b917871e8948ff05b75ae53553e0f0de01fe8721c54177aec","schema_version":"1.0","event_id":"sha256:cdf8bed95cc1665b917871e8948ff05b75ae53553e0f0de01fe8721c54177aec"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JQ6SC4DKAYTXTKO4RVX4NDZVK2/bundle.json","state_url":"https://pith.science/pith/JQ6SC4DKAYTXTKO4RVX4NDZVK2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JQ6SC4DKAYTXTKO4RVX4NDZVK2/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":"2026-05-27T09:33:25Z","links":{"resolver":"https://pith.science/pith/JQ6SC4DKAYTXTKO4RVX4NDZVK2","bundle":"https://pith.science/pith/JQ6SC4DKAYTXTKO4RVX4NDZVK2/bundle.json","state":"https://pith.science/pith/JQ6SC4DKAYTXTKO4RVX4NDZVK2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JQ6SC4DKAYTXTKO4RVX4NDZVK2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:JQ6SC4DKAYTXTKO4RVX4NDZVK2","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":"ae935b5f9c7f4307bc94d033a406b5d2c691de5ca07f81a6b58c416bc2369903","cross_cats_sorted":["cond-mat.quant-gas","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-01-10T10:40:56Z","title_canon_sha256":"ab748e6f938d7db20d495faffc9a4454ecb5036ac14cf792c51b75b12ce60f72"},"schema_version":"1.0","source":{"id":"1301.2077","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.2077","created_at":"2026-05-18T03:36:47Z"},{"alias_kind":"arxiv_version","alias_value":"1301.2077v1","created_at":"2026-05-18T03:36:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.2077","created_at":"2026-05-18T03:36:47Z"},{"alias_kind":"pith_short_12","alias_value":"JQ6SC4DKAYTX","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"JQ6SC4DKAYTXTKO4","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"JQ6SC4DK","created_at":"2026-05-18T12:27:49Z"}],"graph_snapshots":[{"event_id":"sha256:cdf8bed95cc1665b917871e8948ff05b75ae53553e0f0de01fe8721c54177aec","target":"graph","created_at":"2026-05-18T03:36:47Z","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":"Bogoliubov pseudoparticle creation in a BEC undergoing a WH like flow is investigated analytically in the case of a one dimensional geometry with stepwise homogeneous regions. Comparison of the results with those corresponding to a BH flow is performed. The implications for the analogous gravitational problem is discussed.","authors_text":"Alessandro Fabbri, Carlos Mayoral, Roberto Balbinot","cross_cats":["cond-mat.quant-gas","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-01-10T10:40:56Z","title":"Hawking effect in BECs acoustic white holes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.2077","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":"sha256:2e38fded4081b3347db05e6951a0edcda32964af9ba3e57f0e11d79564f27d22","target":"record","created_at":"2026-05-18T03:36:47Z","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":"ae935b5f9c7f4307bc94d033a406b5d2c691de5ca07f81a6b58c416bc2369903","cross_cats_sorted":["cond-mat.quant-gas","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-01-10T10:40:56Z","title_canon_sha256":"ab748e6f938d7db20d495faffc9a4454ecb5036ac14cf792c51b75b12ce60f72"},"schema_version":"1.0","source":{"id":"1301.2077","kind":"arxiv","version":1}},"canonical_sha256":"4c3d21706a062779a9dc8d6fc68f355696b31713341bbcc7734ebcbee3b2f9e6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4c3d21706a062779a9dc8d6fc68f355696b31713341bbcc7734ebcbee3b2f9e6","first_computed_at":"2026-05-18T03:36:47.516905Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:36:47.516905Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kg/ItwiDjk7npl/QVWJQx+sdJ1wDK2AuwVwiYpaIqb8U35fVrjZ4ZkdNw3QAgXtiiUzl0uPksTXaSctZgAHWBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:36:47.517298Z","signed_message":"canonical_sha256_bytes"},"source_id":"1301.2077","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2e38fded4081b3347db05e6951a0edcda32964af9ba3e57f0e11d79564f27d22","sha256:cdf8bed95cc1665b917871e8948ff05b75ae53553e0f0de01fe8721c54177aec"],"state_sha256":"37d28dde8f8019d6b5e26c50439c09575218d26ba554305a48362b08557cd4b7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UxFCyarU0wll2GuPaMK0q1/3jExlsQsZ9Ny6yzKO4doTO7kxINjHRZsGwibbQqrrOYH1Bay743TCCpyNa3H8CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T09:33:25.577394Z","bundle_sha256":"b2f64cf80e59a03948ec5ed0c37e348d99b883991ce03acbccbe62569dcbd624"}}