{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:T3QXAQX65OFVM6PGBTSIR73VXJ","short_pith_number":"pith:T3QXAQX6","canonical_record":{"source":{"id":"1703.02024","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2017-03-06T18:51:05Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"18b52f75dbe01495861247b5e26d2bb2b5faebd0e9c82543e9d846c55f53f081","abstract_canon_sha256":"36724038787ea473971268299f9c507ef5d9b12056a15a36cf7ca5399d8da7de"},"schema_version":"1.0"},"canonical_sha256":"9ee17042feeb8b5679e60ce488ff75ba48a1acdf019ce8d3a3c2d2f3960faa7a","source":{"kind":"arxiv","id":"1703.02024","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.02024","created_at":"2026-05-18T00:45:58Z"},{"alias_kind":"arxiv_version","alias_value":"1703.02024v1","created_at":"2026-05-18T00:45:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.02024","created_at":"2026-05-18T00:45:58Z"},{"alias_kind":"pith_short_12","alias_value":"T3QXAQX65OFV","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"T3QXAQX65OFVM6PG","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"T3QXAQX6","created_at":"2026-05-18T12:31:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:T3QXAQX65OFVM6PGBTSIR73VXJ","target":"record","payload":{"canonical_record":{"source":{"id":"1703.02024","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2017-03-06T18:51:05Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"18b52f75dbe01495861247b5e26d2bb2b5faebd0e9c82543e9d846c55f53f081","abstract_canon_sha256":"36724038787ea473971268299f9c507ef5d9b12056a15a36cf7ca5399d8da7de"},"schema_version":"1.0"},"canonical_sha256":"9ee17042feeb8b5679e60ce488ff75ba48a1acdf019ce8d3a3c2d2f3960faa7a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:45:58.197816Z","signature_b64":"74VBPLXsuvdnTr4Ph/JsGlmQTW3hhOS5eq/zOCa2KpuMRD5gmccBZ4S7K4jNQC/2mBHuYeXG+z78Q2+cMfzFCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9ee17042feeb8b5679e60ce488ff75ba48a1acdf019ce8d3a3c2d2f3960faa7a","last_reissued_at":"2026-05-18T00:45:58.197379Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:45:58.197379Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1703.02024","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":"2026-05-18T00:45:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rOtMgtXC+OGmnUdIgHc1Xpom4YKROahvjY+2zlsuQnUq0tpoIJeG3ATVMJ2I1cbHOwu1cxczE3FhmBBKwc+fDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T22:15:10.769668Z"},"content_sha256":"1bcfde31052fa6203c76cb432bd055a2a8c381cdcc2257ef368082390617b727","schema_version":"1.0","event_id":"sha256:1bcfde31052fa6203c76cb432bd055a2a8c381cdcc2257ef368082390617b727"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:T3QXAQX65OFVM6PGBTSIR73VXJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Superfluidity and relaxation dynamics of a laser-stirred 2D Bose gas","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"cond-mat.quant-gas","authors_text":"Christof Weitenberg, Jean Dalibard, Ludwig Mathey, Vijay Pal Singh","submitted_at":"2017-03-06T18:51:05Z","abstract_excerpt":"We investigate the superfluid behavior of a two-dimensional (2D) Bose gas of $^{87}$Rb atoms using classical field dynamics. In the experiment by R. Desbuquois \\textit{et al.}, Nat. Phys. \\textbf{8}, 645 (2012), a 2D quasicondensate in a trap is stirred by a blue-detuned laser beam along a circular path around the trap center. Here, we study this experiment from a theoretical perspective. The heating induced by stirring increases rapidly above a velocity $v_c$, which we define as the critical velocity. We identify the superfluid, the crossover, and the thermal regime by a finite, a sharply dec"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.02024","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":"2026-05-18T00:45:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P0Djn2JYA1lBensg/ImrOJ9sBbTwjuozGTs5pFu239giWlqeDq639caJRLijpD3RYHOO0UiqZE8qUfSB0q8rDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T22:15:10.770004Z"},"content_sha256":"348e37f4ba4c0b73bc88204f79752da3b43bfdf3f6b1e3867d4c70e1a9826186","schema_version":"1.0","event_id":"sha256:348e37f4ba4c0b73bc88204f79752da3b43bfdf3f6b1e3867d4c70e1a9826186"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/T3QXAQX65OFVM6PGBTSIR73VXJ/bundle.json","state_url":"https://pith.science/pith/T3QXAQX65OFVM6PGBTSIR73VXJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/T3QXAQX65OFVM6PGBTSIR73VXJ/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":"2026-06-08T22:15:10Z","links":{"resolver":"https://pith.science/pith/T3QXAQX65OFVM6PGBTSIR73VXJ","bundle":"https://pith.science/pith/T3QXAQX65OFVM6PGBTSIR73VXJ/bundle.json","state":"https://pith.science/pith/T3QXAQX65OFVM6PGBTSIR73VXJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/T3QXAQX65OFVM6PGBTSIR73VXJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:T3QXAQX65OFVM6PGBTSIR73VXJ","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":"36724038787ea473971268299f9c507ef5d9b12056a15a36cf7ca5399d8da7de","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2017-03-06T18:51:05Z","title_canon_sha256":"18b52f75dbe01495861247b5e26d2bb2b5faebd0e9c82543e9d846c55f53f081"},"schema_version":"1.0","source":{"id":"1703.02024","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.02024","created_at":"2026-05-18T00:45:58Z"},{"alias_kind":"arxiv_version","alias_value":"1703.02024v1","created_at":"2026-05-18T00:45:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.02024","created_at":"2026-05-18T00:45:58Z"},{"alias_kind":"pith_short_12","alias_value":"T3QXAQX65OFV","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"T3QXAQX65OFVM6PG","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"T3QXAQX6","created_at":"2026-05-18T12:31:43Z"}],"graph_snapshots":[{"event_id":"sha256:348e37f4ba4c0b73bc88204f79752da3b43bfdf3f6b1e3867d4c70e1a9826186","target":"graph","created_at":"2026-05-18T00:45:58Z","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 investigate the superfluid behavior of a two-dimensional (2D) Bose gas of $^{87}$Rb atoms using classical field dynamics. In the experiment by R. Desbuquois \\textit{et al.}, Nat. Phys. \\textbf{8}, 645 (2012), a 2D quasicondensate in a trap is stirred by a blue-detuned laser beam along a circular path around the trap center. Here, we study this experiment from a theoretical perspective. The heating induced by stirring increases rapidly above a velocity $v_c$, which we define as the critical velocity. We identify the superfluid, the crossover, and the thermal regime by a finite, a sharply dec","authors_text":"Christof Weitenberg, Jean Dalibard, Ludwig Mathey, Vijay Pal Singh","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2017-03-06T18:51:05Z","title":"Superfluidity and relaxation dynamics of a laser-stirred 2D Bose gas"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.02024","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":"sha256:1bcfde31052fa6203c76cb432bd055a2a8c381cdcc2257ef368082390617b727","target":"record","created_at":"2026-05-18T00:45:58Z","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":"36724038787ea473971268299f9c507ef5d9b12056a15a36cf7ca5399d8da7de","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2017-03-06T18:51:05Z","title_canon_sha256":"18b52f75dbe01495861247b5e26d2bb2b5faebd0e9c82543e9d846c55f53f081"},"schema_version":"1.0","source":{"id":"1703.02024","kind":"arxiv","version":1}},"canonical_sha256":"9ee17042feeb8b5679e60ce488ff75ba48a1acdf019ce8d3a3c2d2f3960faa7a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9ee17042feeb8b5679e60ce488ff75ba48a1acdf019ce8d3a3c2d2f3960faa7a","first_computed_at":"2026-05-18T00:45:58.197379Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:45:58.197379Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"74VBPLXsuvdnTr4Ph/JsGlmQTW3hhOS5eq/zOCa2KpuMRD5gmccBZ4S7K4jNQC/2mBHuYeXG+z78Q2+cMfzFCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:45:58.197816Z","signed_message":"canonical_sha256_bytes"},"source_id":"1703.02024","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1bcfde31052fa6203c76cb432bd055a2a8c381cdcc2257ef368082390617b727","sha256:348e37f4ba4c0b73bc88204f79752da3b43bfdf3f6b1e3867d4c70e1a9826186"],"state_sha256":"f4083c9b54a29e06b1f0d573978203b764dfc0969e4f8ccbdbbc2be6ac3625af"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MMAIaJfOOjHCwSXrQasPaQosyordakFPt19DYi+FNyIL/YTRrKI3AiYYpdo23MQyeOA1h3a1CrHvrNTiX17pCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T22:15:10.771886Z","bundle_sha256":"490169541704e2b0a2f8e3005f3df63b4d96cacdd4b09fb3d9e1f9bba73d7df7"}}