{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:KI7EQYYO57IEUOWENQM36HQRDS","short_pith_number":"pith:KI7EQYYO","canonical_record":{"source":{"id":"cond-mat/0405530","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat.other","submitted_at":"2004-05-21T20:40:22Z","cross_cats_sorted":[],"title_canon_sha256":"5c24bc3522c099942d7ca4bd75b8564002e3d42710f4edd05496e51d9f030ec6","abstract_canon_sha256":"55e1f09ffe76e676500ab53fad5065bb55e256f5cec72c3bc403f06f2c8e2f7c"},"schema_version":"1.0"},"canonical_sha256":"523e48630eefd04a3ac46c19bf1e111c8f748f7dcada9c607cd4c40ee228059c","source":{"kind":"arxiv","id":"cond-mat/0405530","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0405530","created_at":"2026-07-04T16:46:22Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0405530v2","created_at":"2026-07-04T16:46:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0405530","created_at":"2026-07-04T16:46:22Z"},{"alias_kind":"pith_short_12","alias_value":"KI7EQYYO57IE","created_at":"2026-07-04T16:46:22Z"},{"alias_kind":"pith_short_16","alias_value":"KI7EQYYO57IEUOWE","created_at":"2026-07-04T16:46:22Z"},{"alias_kind":"pith_short_8","alias_value":"KI7EQYYO","created_at":"2026-07-04T16:46:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:KI7EQYYO57IEUOWENQM36HQRDS","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0405530","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat.other","submitted_at":"2004-05-21T20:40:22Z","cross_cats_sorted":[],"title_canon_sha256":"5c24bc3522c099942d7ca4bd75b8564002e3d42710f4edd05496e51d9f030ec6","abstract_canon_sha256":"55e1f09ffe76e676500ab53fad5065bb55e256f5cec72c3bc403f06f2c8e2f7c"},"schema_version":"1.0"},"canonical_sha256":"523e48630eefd04a3ac46c19bf1e111c8f748f7dcada9c607cd4c40ee228059c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:46:22.164867Z","signature_b64":"gGX+euXIWcqpuoDs1kOI0qlYBw5NCrwEZAQdh7srSYHSScRHv7lHszm3NJslyA2ZWsWqHh07DDmVvSd0/RReCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"523e48630eefd04a3ac46c19bf1e111c8f748f7dcada9c607cd4c40ee228059c","last_reissued_at":"2026-07-04T16:46:22.164455Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:46:22.164455Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0405530","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":"2026-07-04T16:46:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/1SKRsa5ok9u6AMxVl9Yod3ysiSxrXjFTV8hYtUkV3S5aL+X4ucEM2am8ni4yO8zpkfL22rsjfbu5pDCo0nQCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T17:44:06.924363Z"},"content_sha256":"6d0bed7286a7f44e4313589ff6b987485b71fc9bd4569965c3b4f3863fb924ae","schema_version":"1.0","event_id":"sha256:6d0bed7286a7f44e4313589ff6b987485b71fc9bd4569965c3b4f3863fb924ae"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:KI7EQYYO57IEUOWENQM36HQRDS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum reflection of atoms from a solid surface at normal incidence","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.other","authors_text":"Andre Schirotzek, Christian Sanner, David E. Pritchard, Michele Saba, Thomas A. Pasquini, Wolfgang Ketterle, Yong-il Shin","submitted_at":"2004-05-21T20:40:22Z","abstract_excerpt":"We observed quantum reflection of ultracold atoms from the attractive potential of a solid surface. Extremely dilute Bose-Einstein condensates of ^{23}Na, with peak density 10^{11}-10^{12}atoms/cm^3, confined in a weak gravito-magnetic trap were normally incident on a silicon surface. Reflection probabilities of up to 20 % were observed for incident velocities of 1-8 mm/s. The velocity dependence agrees qualitatively with the prediction for quantum reflection from the attractive Casimir-Polder potential. Atoms confined in a harmonic trap divided in half by a solid surface exhibited extended li"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0405530","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/cond-mat/0405530/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":"2026-07-04T16:46:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rN7UDYycibbaKrXTyYW6WE4o3SK623TdPiaH1KVBvtXgfcz9rP0T3kqK4ukjZtcXDJJmjuT5w/1XH1oR6CeiAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T17:44:06.925323Z"},"content_sha256":"ca0045b9cc0e20a97b8f36c5244b8f2dcbc3986ddf3b58b3a23f13c6988ac079","schema_version":"1.0","event_id":"sha256:ca0045b9cc0e20a97b8f36c5244b8f2dcbc3986ddf3b58b3a23f13c6988ac079"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KI7EQYYO57IEUOWENQM36HQRDS/bundle.json","state_url":"https://pith.science/pith/KI7EQYYO57IEUOWENQM36HQRDS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KI7EQYYO57IEUOWENQM36HQRDS/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":"2026-08-18T17:44:06Z","links":{"resolver":"https://pith.science/pith/KI7EQYYO57IEUOWENQM36HQRDS","bundle":"https://pith.science/pith/KI7EQYYO57IEUOWENQM36HQRDS/bundle.json","state":"https://pith.science/pith/KI7EQYYO57IEUOWENQM36HQRDS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KI7EQYYO57IEUOWENQM36HQRDS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:KI7EQYYO57IEUOWENQM36HQRDS","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":"55e1f09ffe76e676500ab53fad5065bb55e256f5cec72c3bc403f06f2c8e2f7c","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.other","submitted_at":"2004-05-21T20:40:22Z","title_canon_sha256":"5c24bc3522c099942d7ca4bd75b8564002e3d42710f4edd05496e51d9f030ec6"},"schema_version":"1.0","source":{"id":"cond-mat/0405530","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0405530","created_at":"2026-07-04T16:46:22Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0405530v2","created_at":"2026-07-04T16:46:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0405530","created_at":"2026-07-04T16:46:22Z"},{"alias_kind":"pith_short_12","alias_value":"KI7EQYYO57IE","created_at":"2026-07-04T16:46:22Z"},{"alias_kind":"pith_short_16","alias_value":"KI7EQYYO57IEUOWE","created_at":"2026-07-04T16:46:22Z"},{"alias_kind":"pith_short_8","alias_value":"KI7EQYYO","created_at":"2026-07-04T16:46:22Z"}],"graph_snapshots":[{"event_id":"sha256:ca0045b9cc0e20a97b8f36c5244b8f2dcbc3986ddf3b58b3a23f13c6988ac079","target":"graph","created_at":"2026-07-04T16:46:22Z","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/cond-mat/0405530/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We observed quantum reflection of ultracold atoms from the attractive potential of a solid surface. Extremely dilute Bose-Einstein condensates of ^{23}Na, with peak density 10^{11}-10^{12}atoms/cm^3, confined in a weak gravito-magnetic trap were normally incident on a silicon surface. Reflection probabilities of up to 20 % were observed for incident velocities of 1-8 mm/s. The velocity dependence agrees qualitatively with the prediction for quantum reflection from the attractive Casimir-Polder potential. Atoms confined in a harmonic trap divided in half by a solid surface exhibited extended li","authors_text":"Andre Schirotzek, Christian Sanner, David E. Pritchard, Michele Saba, Thomas A. Pasquini, Wolfgang Ketterle, Yong-il Shin","cross_cats":[],"headline":"","license":"","primary_cat":"cond-mat.other","submitted_at":"2004-05-21T20:40:22Z","title":"Quantum reflection of atoms from a solid surface at normal incidence"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0405530","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":"sha256:6d0bed7286a7f44e4313589ff6b987485b71fc9bd4569965c3b4f3863fb924ae","target":"record","created_at":"2026-07-04T16:46:22Z","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":"55e1f09ffe76e676500ab53fad5065bb55e256f5cec72c3bc403f06f2c8e2f7c","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.other","submitted_at":"2004-05-21T20:40:22Z","title_canon_sha256":"5c24bc3522c099942d7ca4bd75b8564002e3d42710f4edd05496e51d9f030ec6"},"schema_version":"1.0","source":{"id":"cond-mat/0405530","kind":"arxiv","version":2}},"canonical_sha256":"523e48630eefd04a3ac46c19bf1e111c8f748f7dcada9c607cd4c40ee228059c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"523e48630eefd04a3ac46c19bf1e111c8f748f7dcada9c607cd4c40ee228059c","first_computed_at":"2026-07-04T16:46:22.164455Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:46:22.164455Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gGX+euXIWcqpuoDs1kOI0qlYBw5NCrwEZAQdh7srSYHSScRHv7lHszm3NJslyA2ZWsWqHh07DDmVvSd0/RReCQ==","signature_status":"signed_v1","signed_at":"2026-07-04T16:46:22.164867Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0405530","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6d0bed7286a7f44e4313589ff6b987485b71fc9bd4569965c3b4f3863fb924ae","sha256:ca0045b9cc0e20a97b8f36c5244b8f2dcbc3986ddf3b58b3a23f13c6988ac079"],"state_sha256":"28db184fdde3df6ddeab4f8e8cb6db914eb3bf8eea16416c33d1553f9412f407"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6ULlw2oiQFIPkWy0ilPIMJzIFrmHbxPB66848SiUOOK0lH2arKM2Nt/NYrE9FXX03NlJc2a+CVweIE+Py3NYCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T17:44:06.952729Z","bundle_sha256":"3d45f172831b8b19cc102393a0ecaecaad91a10d4f9d4aba2687c1edebfab6ec"}}