{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:O7RFEROM32OX2ZD6PPHGO73VIN","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":"b29200cda36f227ff8b20936fb95e17eee36fba3fcbc8b7f272a8a93bd838efe","cross_cats_sorted":["cond-mat.quant-gas","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2018-07-19T15:50:02Z","title_canon_sha256":"adfbe7e9f5ce3d160073ef57a80ff35df959122fe1cbf035f7988d97cbfee910"},"schema_version":"1.0","source":{"id":"1807.07504","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.07504","created_at":"2026-05-17T23:44:59Z"},{"alias_kind":"arxiv_version","alias_value":"1807.07504v1","created_at":"2026-05-17T23:44:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.07504","created_at":"2026-05-17T23:44:59Z"},{"alias_kind":"pith_short_12","alias_value":"O7RFEROM32OX","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"O7RFEROM32OX2ZD6","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"O7RFEROM","created_at":"2026-05-18T12:32:43Z"}],"graph_snapshots":[{"event_id":"sha256:854cbecf057d4b0ba39fa1ec6e9b2fbaf9db62dcec14e99ecf6b9a065847c545","target":"graph","created_at":"2026-05-17T23:44:59Z","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":"Exploring quantum phenomena in a curved spacetime is an emerging interdisciplinary area relating many fields in physics such as general relativity, thermodynamics, and quantum information. One famous prediction is the Hawking-Unruh thermal radiation, the manifestation of Minkowski vacuum in an accelerating reference frame. We simulate the radiation by evolving a parametrically driven Bose-Einstein condensate of $\\approx 10^5$ atoms, which radiates coherent pairs of atoms with opposite momenta. We observe a matterwave field which follows a Boltzmann distribution for a local observer. The extrac","authors_text":"Cheng Chin, Jiazhong Hu, Lei Feng, Zhendong Zhang","cross_cats":["cond-mat.quant-gas","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2018-07-19T15:50:02Z","title":"Quantum Simulation of Coherent Hawking-Unruh Radiation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.07504","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":"sha256:83900fcd0929b2fde13687cfdc6667d208136bf888c5060d4c2504630b56b085","target":"record","created_at":"2026-05-17T23:44:59Z","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":"b29200cda36f227ff8b20936fb95e17eee36fba3fcbc8b7f272a8a93bd838efe","cross_cats_sorted":["cond-mat.quant-gas","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2018-07-19T15:50:02Z","title_canon_sha256":"adfbe7e9f5ce3d160073ef57a80ff35df959122fe1cbf035f7988d97cbfee910"},"schema_version":"1.0","source":{"id":"1807.07504","kind":"arxiv","version":1}},"canonical_sha256":"77e25245ccde9d7d647e7bce677f7543635ac3c6f77e0da99dcb5af4b536ceb7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"77e25245ccde9d7d647e7bce677f7543635ac3c6f77e0da99dcb5af4b536ceb7","first_computed_at":"2026-05-17T23:44:59.344808Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:44:59.344808Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EhnIAQFZpdhax1orcbxRLzU1K0WA5C3oPOP/hW1lEpXFYuPba15y/rRGvwxQZ0erAqrOR2Qdo828NWPJ5UIqAg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:44:59.345478Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.07504","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:83900fcd0929b2fde13687cfdc6667d208136bf888c5060d4c2504630b56b085","sha256:854cbecf057d4b0ba39fa1ec6e9b2fbaf9db62dcec14e99ecf6b9a065847c545"],"state_sha256":"b486d4586872f1372dfdd1b4a1480aecceba99b306a2b0b85e7cb58ab8fea4a5"}