{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:NHEBSIKQFR5PJTGYO5CIU4E4DX","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":"8da596baf8b680474bc9819bc232b4044e1ab384d6a6022ca2118db183fecacc","cross_cats_sorted":["cond-mat.quant-gas","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-04-01T10:20:25Z","title_canon_sha256":"4c978e108de22fd2153e897e79a391280eddd65d8e51ec306985c8dddfb8ca49"},"schema_version":"1.0","source":{"id":"1904.00684","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.00684","created_at":"2026-05-17T23:39:44Z"},{"alias_kind":"arxiv_version","alias_value":"1904.00684v2","created_at":"2026-05-17T23:39:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.00684","created_at":"2026-05-17T23:39:44Z"},{"alias_kind":"pith_short_12","alias_value":"NHEBSIKQFR5P","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"NHEBSIKQFR5PJTGY","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"NHEBSIKQ","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:9389da8a52b39f244e039b2763b7efbe4896ba1f419518889b4c70fd0b228dc3","target":"graph","created_at":"2026-05-17T23:39:44Z","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 theoretically investigate the scattering process of Bogoliubov excitations on a rotating photon-fluid. Using the language of Noether currents we demonstrate the occurrence of a resonant amplification phenomenon, which reduces to the standard superradiance in the hydrodynamic limit. We make use of a time-domain formulation where superradiance emerges as a transient effect encoded in the amplitudes and phases of propagating localised wavepackets. Our findings generalize previous studies in quantum fluids to the case of a non-negligible quantum pressure and can be readily applied also to other","authors_text":"Angus Prain, Calum Maitland, Daniele Faccio, Francesco Marino","cross_cats":["cond-mat.quant-gas","physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-04-01T10:20:25Z","title":"Superradiant scattering in fluids of light"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.00684","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":"sha256:41d7cbdad37deadd4f210f9c33a6aefb9143655152a9dec6e92bdb796a34d673","target":"record","created_at":"2026-05-17T23:39:44Z","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":"8da596baf8b680474bc9819bc232b4044e1ab384d6a6022ca2118db183fecacc","cross_cats_sorted":["cond-mat.quant-gas","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-04-01T10:20:25Z","title_canon_sha256":"4c978e108de22fd2153e897e79a391280eddd65d8e51ec306985c8dddfb8ca49"},"schema_version":"1.0","source":{"id":"1904.00684","kind":"arxiv","version":2}},"canonical_sha256":"69c81921502c7af4ccd877448a709c1dc79a4410460a396cedf946ca85350713","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"69c81921502c7af4ccd877448a709c1dc79a4410460a396cedf946ca85350713","first_computed_at":"2026-05-17T23:39:44.455491Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:39:44.455491Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PvMlOS+A6MwjnurDPxss0bD1zmDJm8ABmgZd0t4sXI/Z7aJFFldbHEZAMv7QByfbrVp3nIjeTWy7n1MLpi/6Bg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:39:44.456281Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.00684","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:41d7cbdad37deadd4f210f9c33a6aefb9143655152a9dec6e92bdb796a34d673","sha256:9389da8a52b39f244e039b2763b7efbe4896ba1f419518889b4c70fd0b228dc3"],"state_sha256":"4689b2f687a0a79a39d4f71d4ddf5eaf6125425f3aebe4389bd287d69a438e4f"}