{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:KWHVPWD4QSJNIJ43L6WYJBPDNQ","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":"82b198d30647f156a67b487632b5160e119b43ae1a2b3eac01e2ced460ea6b77","cross_cats_sorted":[],"license":"","primary_cat":"physics.atom-ph","submitted_at":"2004-04-15T15:48:10Z","title_canon_sha256":"5180ce729b8c9024a5be0a54287428d56984e70204b5e539dce974e27bf99711"},"schema_version":"1.0","source":{"id":"physics/0404075","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"physics/0404075","created_at":"2026-07-04T16:49:50Z"},{"alias_kind":"arxiv_version","alias_value":"physics/0404075v2","created_at":"2026-07-04T16:49:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0404075","created_at":"2026-07-04T16:49:50Z"},{"alias_kind":"pith_short_12","alias_value":"KWHVPWD4QSJN","created_at":"2026-07-04T16:49:50Z"},{"alias_kind":"pith_short_16","alias_value":"KWHVPWD4QSJNIJ43","created_at":"2026-07-04T16:49:50Z"},{"alias_kind":"pith_short_8","alias_value":"KWHVPWD4","created_at":"2026-07-04T16:49:50Z"}],"graph_snapshots":[{"event_id":"sha256:a96b7ef9b0b2fd9c3a989e2acdbae1ad14c21a7f1dd2e34d7bbaaaedaf93d5b2","target":"graph","created_at":"2026-07-04T16:49:50Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/physics/0404075/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report on the observation of ultralong range interactions in a gas of cold Rubidium Rydberg atoms. The van-der-Waals interaction between a pair of Rydberg atoms separated as far as 100,000 Bohr radii features two important effects: Spectral broadening of the resonance lines and suppression of excitation with increasing density. The density dependence of these effects is investigated in detail for the S- and P- Rydberg states with main quantum numbers n ~ 60 and n ~ 80 excited by narrow-band continuous-wave laser light. The density-dependent suppression of excitation can be interpreted as th","authors_text":"Kilian Singer, Luis Gustavo Marcassa, Markus Reetz-Lamour, Matthias Weidem\\\"uller, Thomas Amthor","cross_cats":[],"headline":"","license":"","primary_cat":"physics.atom-ph","submitted_at":"2004-04-15T15:48:10Z","title":"Suppression of Excitation and Spectral Broadening Induced by Interactions in a Cold Gas of Rydberg Atoms"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0404075","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":"sha256:8d677ed7ab4fab3c997eca5ac8a8f5eace845e7441ff928ea4f12857087e8a36","target":"record","created_at":"2026-07-04T16:49:50Z","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":"82b198d30647f156a67b487632b5160e119b43ae1a2b3eac01e2ced460ea6b77","cross_cats_sorted":[],"license":"","primary_cat":"physics.atom-ph","submitted_at":"2004-04-15T15:48:10Z","title_canon_sha256":"5180ce729b8c9024a5be0a54287428d56984e70204b5e539dce974e27bf99711"},"schema_version":"1.0","source":{"id":"physics/0404075","kind":"arxiv","version":2}},"canonical_sha256":"558f57d87c8492d4279b5fad8485e36c2c17071ad2f2ae77cf46dd8d64fa3ba9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"558f57d87c8492d4279b5fad8485e36c2c17071ad2f2ae77cf46dd8d64fa3ba9","first_computed_at":"2026-07-04T16:49:50.387720Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:49:50.387720Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gCWq8evKvHSmwph3GRk47QP59+RITjqYXfVZmClcQdzokBpLJL2ZjeLwxe2yhNt6i8LunL4tB5y23Nvb7o7aBQ==","signature_status":"signed_v1","signed_at":"2026-07-04T16:49:50.388092Z","signed_message":"canonical_sha256_bytes"},"source_id":"physics/0404075","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8d677ed7ab4fab3c997eca5ac8a8f5eace845e7441ff928ea4f12857087e8a36","sha256:a96b7ef9b0b2fd9c3a989e2acdbae1ad14c21a7f1dd2e34d7bbaaaedaf93d5b2"],"state_sha256":"57fcf67076ebe9890a9aaf6cf0df02d021cfb13d5433f8f67b50ce5e04ad70a5"}