{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:DP3TN4N6TMWYQ4HQWUY77VTB6R","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":"eb9385712b520f18bcd39298d402a3210169cf8123c71386767030ab0b9412b6","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-06-15T10:28:03Z","title_canon_sha256":"308bd2c2b25083bf3c395d23b8eb26bc6bbe90251691501101a618bd99b1688c"},"schema_version":"1.0","source":{"id":"1506.04542","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.04542","created_at":"2026-05-17T23:46:46Z"},{"alias_kind":"arxiv_version","alias_value":"1506.04542v1","created_at":"2026-05-17T23:46:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.04542","created_at":"2026-05-17T23:46:46Z"},{"alias_kind":"pith_short_12","alias_value":"DP3TN4N6TMWY","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_16","alias_value":"DP3TN4N6TMWYQ4HQ","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_8","alias_value":"DP3TN4N6","created_at":"2026-05-18T12:29:17Z"}],"graph_snapshots":[{"event_id":"sha256:6ab24f2dba4260a1b1fe6f27f35dd158ace5f469c6f742e56754d3095427c814","target":"graph","created_at":"2026-05-17T23:46:46Z","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":"Superfluidity is an emergent quantum phenomenon which arises due to strong interactions between elementary excitations in liquid helium. These excitations have been probed with great success using techniques such as neutron and light scattering. However measurements to-date have been limited, quite generally, to average properties of bulk superfluid or the driven response far out of thermal equilibrium. Here, we use cavity optomechanics to probe the thermodynamics of superfluid excitations in real-time. Furthermore, strong light-matter interactions allow both laser cooling and amplification of","authors_text":"C. Baker, D. L. McAuslan, E. Sheridan, G. I. Harris, W. P. Bowen, Y. Sachkou","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-06-15T10:28:03Z","title":"Laser cooling and control of excitations in superfluid helium"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.04542","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":"sha256:0248f848b07aecbe9f7a1e0a5e38a75984db4b5e89249f36344971a54efc38df","target":"record","created_at":"2026-05-17T23:46:46Z","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":"eb9385712b520f18bcd39298d402a3210169cf8123c71386767030ab0b9412b6","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-06-15T10:28:03Z","title_canon_sha256":"308bd2c2b25083bf3c395d23b8eb26bc6bbe90251691501101a618bd99b1688c"},"schema_version":"1.0","source":{"id":"1506.04542","kind":"arxiv","version":1}},"canonical_sha256":"1bf736f1be9b2d8870f0b531ffd661f45b2a5c578641f33e69913b1c1945599f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1bf736f1be9b2d8870f0b531ffd661f45b2a5c578641f33e69913b1c1945599f","first_computed_at":"2026-05-17T23:46:46.713821Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:46:46.713821Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9AULXXlWjacASl4ChDIYryUqkg6L3fjPa7x9+7hioFCQWGJwiVVz/QErbTWYQg7p1SfS7naS5CPhO1TzOJppBw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:46:46.714425Z","signed_message":"canonical_sha256_bytes"},"source_id":"1506.04542","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0248f848b07aecbe9f7a1e0a5e38a75984db4b5e89249f36344971a54efc38df","sha256:6ab24f2dba4260a1b1fe6f27f35dd158ace5f469c6f742e56754d3095427c814"],"state_sha256":"f591fd173cc512c0f3d9e05bffaada8aa49e4030a3d8e38de5bd38b76d5b67de"}