{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:NKCBAHEU2EQGCL3VWTAUMEW33M","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":"13dcf781e0a521c70158e185caffa0855c709f2c479af71e7651b1261a57e52a","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2012-03-23T21:20:01Z","title_canon_sha256":"2b4c93ece48c3366229bf1b4772f9e1571b5d755314db41adbfe04936ed138e3"},"schema_version":"1.0","source":{"id":"1203.5357","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.5357","created_at":"2026-05-18T03:44:47Z"},{"alias_kind":"arxiv_version","alias_value":"1203.5357v3","created_at":"2026-05-18T03:44:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.5357","created_at":"2026-05-18T03:44:47Z"},{"alias_kind":"pith_short_12","alias_value":"NKCBAHEU2EQG","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"NKCBAHEU2EQGCL3V","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"NKCBAHEU","created_at":"2026-05-18T12:27:16Z"}],"graph_snapshots":[{"event_id":"sha256:1edba7fc4084fbd9f73cb6b8cae3b9ff619e554a9515972a62b0066edcd2c909","target":"graph","created_at":"2026-05-18T03:44:47Z","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":"We develop a model for parametric amplification, based on a density matrix approach, which naturally accounts for the peculiarities arising for matter waves: significant depletion and explicit time-dependence of the source state population, long interaction times, and spatial dynamics of the amplified modes. We apply our model to explain the details in an experimental study on twin-atom beam emission from a one-dimensional degenerate Bose gas.","authors_text":"Aur\\'elien Perrin, J\\\"org Schmiedmayer, Julian Grond, Robert B\\\"ucker, Sandrine van Frank, Stephanie Manz, Tarik Berrada, Thomas Betz, Thorsten Schumm, Ulrich Hohenester","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2012-03-23T21:20:01Z","title":"Dynamics of parametric matter wave amplification"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.5357","kind":"arxiv","version":3},"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":"sha256:6924645da099bae6c5cf40d5ba433bb8d518f97fd935023f8d4de3931f777e0b","target":"record","created_at":"2026-05-18T03:44:47Z","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":"13dcf781e0a521c70158e185caffa0855c709f2c479af71e7651b1261a57e52a","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2012-03-23T21:20:01Z","title_canon_sha256":"2b4c93ece48c3366229bf1b4772f9e1571b5d755314db41adbfe04936ed138e3"},"schema_version":"1.0","source":{"id":"1203.5357","kind":"arxiv","version":3}},"canonical_sha256":"6a84101c94d120612f75b4c14612dbdb06a4b8e7ce2ae352164436cd5a8783da","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6a84101c94d120612f75b4c14612dbdb06a4b8e7ce2ae352164436cd5a8783da","first_computed_at":"2026-05-18T03:44:47.204889Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:44:47.204889Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"E8Jx7khfUOTQ6wTT4dRFxOg4PhSsXs0EqESgg7axrVVPRKWOfH0Al+V/TVeUa0+RgCjw24JDJUkUMhYiacOlBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:44:47.205436Z","signed_message":"canonical_sha256_bytes"},"source_id":"1203.5357","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6924645da099bae6c5cf40d5ba433bb8d518f97fd935023f8d4de3931f777e0b","sha256:1edba7fc4084fbd9f73cb6b8cae3b9ff619e554a9515972a62b0066edcd2c909"],"state_sha256":"294533b35cd4fa4db121b597800dc013b6324503d222965b3641158f77ad81af"}