{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:BDSV7CKTGU5XEICE7VCPDXEOIS","short_pith_number":"pith:BDSV7CKT","canonical_record":{"source":{"id":"2204.10697","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2022-04-22T13:34:09Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"fb2f8592cf83441b59a7094406200ed8950ab9cab572553dea09d156acf67b36","abstract_canon_sha256":"84aca9f2e04a275e5fab94c7b33f8a8013048dd3f3892ade862c1e59b8ce5a8b"},"schema_version":"1.0"},"canonical_sha256":"08e55f8953353b722044fd44f1dc8e44b2884700c69f48106326abf6bb6a36f6","source":{"kind":"arxiv","id":"2204.10697","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2204.10697","created_at":"2026-07-05T06:00:30Z"},{"alias_kind":"arxiv_version","alias_value":"2204.10697v2","created_at":"2026-07-05T06:00:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2204.10697","created_at":"2026-07-05T06:00:30Z"},{"alias_kind":"pith_short_12","alias_value":"BDSV7CKTGU5X","created_at":"2026-07-05T06:00:30Z"},{"alias_kind":"pith_short_16","alias_value":"BDSV7CKTGU5XEICE","created_at":"2026-07-05T06:00:30Z"},{"alias_kind":"pith_short_8","alias_value":"BDSV7CKT","created_at":"2026-07-05T06:00:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:BDSV7CKTGU5XEICE7VCPDXEOIS","target":"record","payload":{"canonical_record":{"source":{"id":"2204.10697","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2022-04-22T13:34:09Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"fb2f8592cf83441b59a7094406200ed8950ab9cab572553dea09d156acf67b36","abstract_canon_sha256":"84aca9f2e04a275e5fab94c7b33f8a8013048dd3f3892ade862c1e59b8ce5a8b"},"schema_version":"1.0"},"canonical_sha256":"08e55f8953353b722044fd44f1dc8e44b2884700c69f48106326abf6bb6a36f6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:00:30.345027Z","signature_b64":"1IzE2JwtanHwB+dWjqiKULko2mlItZUGCQPI/XWfZulb5qn5uo81CSp/5MDHzYK6TUPDGq0/AqLGZSGGkSD/DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"08e55f8953353b722044fd44f1dc8e44b2884700c69f48106326abf6bb6a36f6","last_reissued_at":"2026-07-05T06:00:30.344608Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:00:30.344608Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2204.10697","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T06:00:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WHNDtx1X+mUcWdEgnLA4TFdu5Yp6TupaUifXqmh05+/wmrXEgwpZxVdmRU17uyD3Yag2wfvrgvz2aA2FKAbjBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T08:08:06.100834Z"},"content_sha256":"e69c0787055c71e7963e60bd80263a46caa345f24bd14227b13ac4609b5f30d4","schema_version":"1.0","event_id":"sha256:e69c0787055c71e7963e60bd80263a46caa345f24bd14227b13ac4609b5f30d4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:BDSV7CKTGU5XEICE7VCPDXEOIS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Observation of $1/k^4$-tails after expansion of Bose-Einstein Condensates with impurities","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.atom-ph"],"primary_cat":"cond-mat.quant-gas","authors_text":"Alain Aspect, Christoph I. Westbrook, David Cl\\'ement, Hugo Cayla, Pietro Massignan, Thierry Giamarchi","submitted_at":"2022-04-22T13:34:09Z","abstract_excerpt":"We measure the momentum density in a Bose-Einstein condensate (BEC) with dilute spin impurities after an expansion in the presence of interactions. We observe tails decaying as $1/k^4$ at large momentum $k$ in the condensate and in the impurity cloud. These algebraic tails originate from the impurity-BEC interaction, but their amplitudes greatly exceed those expected from two-body contact interactions at equilibrium in the trap. Furthermore, in the absence of impurities, such algebraic tails are not found in the BEC density measured after the interaction-driven expansion. These results highlig"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2204.10697","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2204.10697/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T06:00:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jWpwHqXYseQKVcDL6+uZQLP6j3IYym9u5Lp8TzWfBX4FnaNzXeltWGOs6fohmOoh0RIU73i2Du4GKqHG4SN1Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T08:08:06.101373Z"},"content_sha256":"553bd216c7646cd130cbc7a3aea133d56c3dfcd8cfe828c453feebca096d8b9b","schema_version":"1.0","event_id":"sha256:553bd216c7646cd130cbc7a3aea133d56c3dfcd8cfe828c453feebca096d8b9b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BDSV7CKTGU5XEICE7VCPDXEOIS/bundle.json","state_url":"https://pith.science/pith/BDSV7CKTGU5XEICE7VCPDXEOIS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BDSV7CKTGU5XEICE7VCPDXEOIS/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":"2026-08-20T08:08:06Z","links":{"resolver":"https://pith.science/pith/BDSV7CKTGU5XEICE7VCPDXEOIS","bundle":"https://pith.science/pith/BDSV7CKTGU5XEICE7VCPDXEOIS/bundle.json","state":"https://pith.science/pith/BDSV7CKTGU5XEICE7VCPDXEOIS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BDSV7CKTGU5XEICE7VCPDXEOIS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:BDSV7CKTGU5XEICE7VCPDXEOIS","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":"84aca9f2e04a275e5fab94c7b33f8a8013048dd3f3892ade862c1e59b8ce5a8b","cross_cats_sorted":["physics.atom-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2022-04-22T13:34:09Z","title_canon_sha256":"fb2f8592cf83441b59a7094406200ed8950ab9cab572553dea09d156acf67b36"},"schema_version":"1.0","source":{"id":"2204.10697","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2204.10697","created_at":"2026-07-05T06:00:30Z"},{"alias_kind":"arxiv_version","alias_value":"2204.10697v2","created_at":"2026-07-05T06:00:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2204.10697","created_at":"2026-07-05T06:00:30Z"},{"alias_kind":"pith_short_12","alias_value":"BDSV7CKTGU5X","created_at":"2026-07-05T06:00:30Z"},{"alias_kind":"pith_short_16","alias_value":"BDSV7CKTGU5XEICE","created_at":"2026-07-05T06:00:30Z"},{"alias_kind":"pith_short_8","alias_value":"BDSV7CKT","created_at":"2026-07-05T06:00:30Z"}],"graph_snapshots":[{"event_id":"sha256:553bd216c7646cd130cbc7a3aea133d56c3dfcd8cfe828c453feebca096d8b9b","target":"graph","created_at":"2026-07-05T06:00:30Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2204.10697/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We measure the momentum density in a Bose-Einstein condensate (BEC) with dilute spin impurities after an expansion in the presence of interactions. We observe tails decaying as $1/k^4$ at large momentum $k$ in the condensate and in the impurity cloud. These algebraic tails originate from the impurity-BEC interaction, but their amplitudes greatly exceed those expected from two-body contact interactions at equilibrium in the trap. Furthermore, in the absence of impurities, such algebraic tails are not found in the BEC density measured after the interaction-driven expansion. These results highlig","authors_text":"Alain Aspect, Christoph I. Westbrook, David Cl\\'ement, Hugo Cayla, Pietro Massignan, Thierry Giamarchi","cross_cats":["physics.atom-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2022-04-22T13:34:09Z","title":"Observation of $1/k^4$-tails after expansion of Bose-Einstein Condensates with impurities"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2204.10697","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:e69c0787055c71e7963e60bd80263a46caa345f24bd14227b13ac4609b5f30d4","target":"record","created_at":"2026-07-05T06:00:30Z","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":"84aca9f2e04a275e5fab94c7b33f8a8013048dd3f3892ade862c1e59b8ce5a8b","cross_cats_sorted":["physics.atom-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2022-04-22T13:34:09Z","title_canon_sha256":"fb2f8592cf83441b59a7094406200ed8950ab9cab572553dea09d156acf67b36"},"schema_version":"1.0","source":{"id":"2204.10697","kind":"arxiv","version":2}},"canonical_sha256":"08e55f8953353b722044fd44f1dc8e44b2884700c69f48106326abf6bb6a36f6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"08e55f8953353b722044fd44f1dc8e44b2884700c69f48106326abf6bb6a36f6","first_computed_at":"2026-07-05T06:00:30.344608Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:00:30.344608Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1IzE2JwtanHwB+dWjqiKULko2mlItZUGCQPI/XWfZulb5qn5uo81CSp/5MDHzYK6TUPDGq0/AqLGZSGGkSD/DQ==","signature_status":"signed_v1","signed_at":"2026-07-05T06:00:30.345027Z","signed_message":"canonical_sha256_bytes"},"source_id":"2204.10697","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e69c0787055c71e7963e60bd80263a46caa345f24bd14227b13ac4609b5f30d4","sha256:553bd216c7646cd130cbc7a3aea133d56c3dfcd8cfe828c453feebca096d8b9b"],"state_sha256":"aa3652b4facfe7af16d88da4da70e67988b8d3d913cae8e5978003b170d195ee"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"likLtiEbv7jY+awlLlZoPmgjHBqCLepcLNZ7CV63DvT82ikW5lLE7ilnOpFbcczUIgHhJckdpznAQqQSjm2tCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-20T08:08:06.106633Z","bundle_sha256":"d90bc99e84a01bd5ea13af40c30f74dc125901762c03626fb292a4291db07fb8"}}