{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:B6QPFVFYNICQAMUXX4GJJW2FEY","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":"da3201fe37a41edf5d3d27629f23d2cc83c19eff24f4b430d98b4b27c003afbf","cross_cats_sorted":["cond-mat.quant-gas","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-06-13T15:44:23Z","title_canon_sha256":"39d6f588730b0e9a4999f55daa2420be6b05328a8906c1bf876afffc0e267987"},"schema_version":"1.0","source":{"id":"1406.3572","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.3572","created_at":"2026-05-18T02:27:29Z"},{"alias_kind":"arxiv_version","alias_value":"1406.3572v2","created_at":"2026-05-18T02:27:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.3572","created_at":"2026-05-18T02:27:29Z"},{"alias_kind":"pith_short_12","alias_value":"B6QPFVFYNICQ","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_16","alias_value":"B6QPFVFYNICQAMUX","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_8","alias_value":"B6QPFVFY","created_at":"2026-05-18T12:28:22Z"}],"graph_snapshots":[{"event_id":"sha256:7c964da95b540db32d6f19b9d6347f41649681df48d71cb08a0357496c2da06c","target":"graph","created_at":"2026-05-18T02:27:29Z","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 show how to vary the physical properties of a Bose-Einstein condensate (BEC) in order to mimic an effective gravitational-wave spacetime. In particular, we focus in the simulation of the recently discovered creation of particles by real spacetime distortion in box-type traps. We show that, by modulating the speed of sound in the BEC, the phonons experience the effects of a simulated spacetime ripple with experimentally amenable parameters. These results will inform the experimental programme of gravitational wave astronomy with cold atoms.","authors_text":"Carlos Sab\\'in, Ivette Fuentes, Tupac Bravo","cross_cats":["cond-mat.quant-gas","gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-06-13T15:44:23Z","title":"Analog quantum simulation of gravitational waves in a Bose-Einstein condensate"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.3572","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":"sha256:6c798ac1a8f0d3505cf38b0eeb23374660076f71013ad85e947e0a51bc4e45cf","target":"record","created_at":"2026-05-18T02:27:29Z","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":"da3201fe37a41edf5d3d27629f23d2cc83c19eff24f4b430d98b4b27c003afbf","cross_cats_sorted":["cond-mat.quant-gas","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-06-13T15:44:23Z","title_canon_sha256":"39d6f588730b0e9a4999f55daa2420be6b05328a8906c1bf876afffc0e267987"},"schema_version":"1.0","source":{"id":"1406.3572","kind":"arxiv","version":2}},"canonical_sha256":"0fa0f2d4b86a05003297bf0c94db45260a48f775ca2b536b7e760ebb69e326ca","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0fa0f2d4b86a05003297bf0c94db45260a48f775ca2b536b7e760ebb69e326ca","first_computed_at":"2026-05-18T02:27:29.230295Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:27:29.230295Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"d4arqoArvNrJLii9GgyYtdu6X8Zg4Lf8hZDzxkIc6ESFaElw92rIkM+CKiqAFnqGHif4AzCL2lPYLybFls7PBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:27:29.230992Z","signed_message":"canonical_sha256_bytes"},"source_id":"1406.3572","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6c798ac1a8f0d3505cf38b0eeb23374660076f71013ad85e947e0a51bc4e45cf","sha256:7c964da95b540db32d6f19b9d6347f41649681df48d71cb08a0357496c2da06c"],"state_sha256":"65d7bcdb91f138ee19d980d229c960a26c6c3278c66cfab1b038d98d1a9b6c2a"}