{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:MFJGWOGLOT6XCPXBQA3DTNQGYU","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":"c7c278430fa665aa555432645800b198516ade7e74565c46dab9030f6263d23a","cross_cats_sorted":["gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-11-20T15:45:49Z","title_canon_sha256":"75a5f8d571ca6ca759ee0c29c37a0a69a67f108185b8d2b282cb858d837cf343"},"schema_version":"1.0","source":{"id":"1511.06651","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.06651","created_at":"2026-05-18T00:50:57Z"},{"alias_kind":"arxiv_version","alias_value":"1511.06651v4","created_at":"2026-05-18T00:50:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.06651","created_at":"2026-05-18T00:50:57Z"},{"alias_kind":"pith_short_12","alias_value":"MFJGWOGLOT6X","created_at":"2026-05-18T12:29:32Z"},{"alias_kind":"pith_short_16","alias_value":"MFJGWOGLOT6XCPXB","created_at":"2026-05-18T12:29:32Z"},{"alias_kind":"pith_short_8","alias_value":"MFJGWOGL","created_at":"2026-05-18T12:29:32Z"}],"graph_snapshots":[{"event_id":"sha256:fc8cc1d34a5f3aaca41cb9407f47dd6bfbbb0e6a0270771a9be8b1c19fee2f43","target":"graph","created_at":"2026-05-18T00:50:57Z","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":"Ultracold neutrons confined in the Earth's gravitational field display quantized energy levels that have been observed for over a decade. In recent resonance spectroscopy experiments [T. Jenke et al., Nature Phys. 7, 468 (2011)], the transition between two such gravitational quantum states was driven by the mechanical oscillation of the plates that confine the neutrons. Here we show that, by applying a sinusoidal modulation with slowly varying frequency (chirp), the neutrons can be brought to higher excited states by climbing the energy levels one by one. The proposed experiment should make it","authors_text":"Giovanni Manfredi, Hartmut Abele, Lazar Friedland, Omar Morandi, Tobias Jenke","cross_cats":["gr-qc","hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-11-20T15:45:49Z","title":"Chirped-Frequency Excitation of Gravitationally Bound Ultracold Neutrons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.06651","kind":"arxiv","version":4},"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":"sha256:0e0edddd8c953b2eb9fda96a39d394465d3758c8f1b4333238aa93f8a9e4d7aa","target":"record","created_at":"2026-05-18T00:50:57Z","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":"c7c278430fa665aa555432645800b198516ade7e74565c46dab9030f6263d23a","cross_cats_sorted":["gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-11-20T15:45:49Z","title_canon_sha256":"75a5f8d571ca6ca759ee0c29c37a0a69a67f108185b8d2b282cb858d837cf343"},"schema_version":"1.0","source":{"id":"1511.06651","kind":"arxiv","version":4}},"canonical_sha256":"61526b38cb74fd713ee1803639b606c53268dbcaea4145d01481bcdb0acba53e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"61526b38cb74fd713ee1803639b606c53268dbcaea4145d01481bcdb0acba53e","first_computed_at":"2026-05-18T00:50:57.608145Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:50:57.608145Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XEmMOcrDdRPUAtBE62hy7TWxYAYAbv58zA33brZ260BXdFbem+CFp37jrRVSc9jBpBc5CbT8XyEEo0sLulcSBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:50:57.608946Z","signed_message":"canonical_sha256_bytes"},"source_id":"1511.06651","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0e0edddd8c953b2eb9fda96a39d394465d3758c8f1b4333238aa93f8a9e4d7aa","sha256:fc8cc1d34a5f3aaca41cb9407f47dd6bfbbb0e6a0270771a9be8b1c19fee2f43"],"state_sha256":"79bf0852516c2879e06d100b08983ce2eaca117cbef66ecc662be90e668da305"}