{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:YMBHUPBDPDC6FEHT7SDLERIGBU","short_pith_number":"pith:YMBHUPBD","canonical_record":{"source":{"id":"1302.2871","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2013-02-12T17:41:54Z","cross_cats_sorted":["physics.flu-dyn"],"title_canon_sha256":"e6ecfafd42201926bf080703023341cb5f5865c6841120c0b011fe7340200640","abstract_canon_sha256":"b47907fc5712ca99b916a9d203d86e73247a0245281f8a442b16c94ac127d064"},"schema_version":"1.0"},"canonical_sha256":"c3027a3c2378c5e290f3fc86b245060d0eb188e88d3bbdccdb7db93bfe30202c","source":{"kind":"arxiv","id":"1302.2871","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.2871","created_at":"2026-05-18T03:33:50Z"},{"alias_kind":"arxiv_version","alias_value":"1302.2871v1","created_at":"2026-05-18T03:33:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.2871","created_at":"2026-05-18T03:33:50Z"},{"alias_kind":"pith_short_12","alias_value":"YMBHUPBDPDC6","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"YMBHUPBDPDC6FEHT","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"YMBHUPBD","created_at":"2026-05-18T12:28:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:YMBHUPBDPDC6FEHT7SDLERIGBU","target":"record","payload":{"canonical_record":{"source":{"id":"1302.2871","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2013-02-12T17:41:54Z","cross_cats_sorted":["physics.flu-dyn"],"title_canon_sha256":"e6ecfafd42201926bf080703023341cb5f5865c6841120c0b011fe7340200640","abstract_canon_sha256":"b47907fc5712ca99b916a9d203d86e73247a0245281f8a442b16c94ac127d064"},"schema_version":"1.0"},"canonical_sha256":"c3027a3c2378c5e290f3fc86b245060d0eb188e88d3bbdccdb7db93bfe30202c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:33:50.545701Z","signature_b64":"TnOAdOBMB+mV/JZ+qa4qlOUfp/3yrE7TNrN5ynUCMdFwFR2rXxDdO4210Yuv9oGsVdQiVE+mga50keu2aybLBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c3027a3c2378c5e290f3fc86b245060d0eb188e88d3bbdccdb7db93bfe30202c","last_reissued_at":"2026-05-18T03:33:50.544991Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:33:50.544991Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1302.2871","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:33:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ug40Tlbs9h1Vl5+ztx9rfrAM9VId5mpaeh7m5w9HfYaBqFruOd53g46EicMJuy077WH/3sT/1LWZIRU3+sQYCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T18:19:38.959001Z"},"content_sha256":"0c8e35451d79640275ce1d9c8ba08c7c11a7a1cde44c9b85a9d530e91af2fbeb","schema_version":"1.0","event_id":"sha256:0c8e35451d79640275ce1d9c8ba08c7c11a7a1cde44c9b85a9d530e91af2fbeb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:YMBHUPBDPDC6FEHT7SDLERIGBU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Second sound and the superfluid fraction in a resonantly interacting Fermi gas","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.flu-dyn"],"primary_cat":"cond-mat.quant-gas","authors_text":"Leonid A. Sidorenkov, Lev Pitaevskii, Meng Khoon Tey, Rudolf Grimm, Sandro Stringari, Yan-Hua Hou","submitted_at":"2013-02-12T17:41:54Z","abstract_excerpt":"Superfluidity is a macroscopic quantum phenomenon, which shows up below a critical temperature and leads to a peculiar behavior of matter, with frictionless flow, the formation of quantized vortices, and the quenching of the moment of inertia being intriguing examples. A remarkable explanation for many phenomena exhibited by a superfluid at finite temperature can be given in terms of a two-fluid mixture comprised of a normal component that behaves like a usual fluid and a superfluid component with zero viscosity and zero entropy. Important examples of superfluid systems are liquid helium and n"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.2871","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:33:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y60FvPJrTxtBmKajho8cG7DzfQQWHHx70Kp19X7LvjFuQ66UvuMmZ4Xbb8s00F/v/iYOE4Cty7uq3pm1I1pYBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T18:19:38.959417Z"},"content_sha256":"970f0dd8602d158e310b4fa2e3dbe9884d280e7a386aac2970d14418f0ca5a8e","schema_version":"1.0","event_id":"sha256:970f0dd8602d158e310b4fa2e3dbe9884d280e7a386aac2970d14418f0ca5a8e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YMBHUPBDPDC6FEHT7SDLERIGBU/bundle.json","state_url":"https://pith.science/pith/YMBHUPBDPDC6FEHT7SDLERIGBU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YMBHUPBDPDC6FEHT7SDLERIGBU/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-04T18:19:38Z","links":{"resolver":"https://pith.science/pith/YMBHUPBDPDC6FEHT7SDLERIGBU","bundle":"https://pith.science/pith/YMBHUPBDPDC6FEHT7SDLERIGBU/bundle.json","state":"https://pith.science/pith/YMBHUPBDPDC6FEHT7SDLERIGBU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YMBHUPBDPDC6FEHT7SDLERIGBU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:YMBHUPBDPDC6FEHT7SDLERIGBU","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":"b47907fc5712ca99b916a9d203d86e73247a0245281f8a442b16c94ac127d064","cross_cats_sorted":["physics.flu-dyn"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2013-02-12T17:41:54Z","title_canon_sha256":"e6ecfafd42201926bf080703023341cb5f5865c6841120c0b011fe7340200640"},"schema_version":"1.0","source":{"id":"1302.2871","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.2871","created_at":"2026-05-18T03:33:50Z"},{"alias_kind":"arxiv_version","alias_value":"1302.2871v1","created_at":"2026-05-18T03:33:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.2871","created_at":"2026-05-18T03:33:50Z"},{"alias_kind":"pith_short_12","alias_value":"YMBHUPBDPDC6","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"YMBHUPBDPDC6FEHT","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"YMBHUPBD","created_at":"2026-05-18T12:28:06Z"}],"graph_snapshots":[{"event_id":"sha256:970f0dd8602d158e310b4fa2e3dbe9884d280e7a386aac2970d14418f0ca5a8e","target":"graph","created_at":"2026-05-18T03:33:50Z","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 a macroscopic quantum phenomenon, which shows up below a critical temperature and leads to a peculiar behavior of matter, with frictionless flow, the formation of quantized vortices, and the quenching of the moment of inertia being intriguing examples. A remarkable explanation for many phenomena exhibited by a superfluid at finite temperature can be given in terms of a two-fluid mixture comprised of a normal component that behaves like a usual fluid and a superfluid component with zero viscosity and zero entropy. Important examples of superfluid systems are liquid helium and n","authors_text":"Leonid A. Sidorenkov, Lev Pitaevskii, Meng Khoon Tey, Rudolf Grimm, Sandro Stringari, Yan-Hua Hou","cross_cats":["physics.flu-dyn"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2013-02-12T17:41:54Z","title":"Second sound and the superfluid fraction in a resonantly interacting Fermi gas"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.2871","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":"sha256:0c8e35451d79640275ce1d9c8ba08c7c11a7a1cde44c9b85a9d530e91af2fbeb","target":"record","created_at":"2026-05-18T03:33:50Z","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":"b47907fc5712ca99b916a9d203d86e73247a0245281f8a442b16c94ac127d064","cross_cats_sorted":["physics.flu-dyn"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2013-02-12T17:41:54Z","title_canon_sha256":"e6ecfafd42201926bf080703023341cb5f5865c6841120c0b011fe7340200640"},"schema_version":"1.0","source":{"id":"1302.2871","kind":"arxiv","version":1}},"canonical_sha256":"c3027a3c2378c5e290f3fc86b245060d0eb188e88d3bbdccdb7db93bfe30202c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c3027a3c2378c5e290f3fc86b245060d0eb188e88d3bbdccdb7db93bfe30202c","first_computed_at":"2026-05-18T03:33:50.544991Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:33:50.544991Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TnOAdOBMB+mV/JZ+qa4qlOUfp/3yrE7TNrN5ynUCMdFwFR2rXxDdO4210Yuv9oGsVdQiVE+mga50keu2aybLBA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:33:50.545701Z","signed_message":"canonical_sha256_bytes"},"source_id":"1302.2871","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0c8e35451d79640275ce1d9c8ba08c7c11a7a1cde44c9b85a9d530e91af2fbeb","sha256:970f0dd8602d158e310b4fa2e3dbe9884d280e7a386aac2970d14418f0ca5a8e"],"state_sha256":"5e1f472df2834ff1ca82d30c01ea3c7818c464ae6831cb232165b482b90909b2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Nfa+qsORY4rnMpJCdVVhI/ObyEDp58ZJFwEaNgN89aOJsC9vN/dWjJZGyrDcbYvFBogeoFGbN48trRQxlHIBDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T18:19:38.961555Z","bundle_sha256":"e88aeeae319b82747627e293caa98fca9ac6a789a957b12425553c2dd76c2097"}}