{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:H7SA6RMO675OYN4AT6I2PWNNOP","short_pith_number":"pith:H7SA6RMO","canonical_record":{"source":{"id":"1402.5653","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-02-23T19:00:28Z","cross_cats_sorted":[],"title_canon_sha256":"bb3d8438a68928e6caad21e86fa1657f18b24e752925630856f60cd75a9efdbf","abstract_canon_sha256":"7b01cef3c6dfedeefaa4326bb195892f34e31ade5f9e259902033ac3a78c4a60"},"schema_version":"1.0"},"canonical_sha256":"3fe40f458ef7faec37809f91a7d9ad73cc0b08b5842d7c5b5c0794854c8607b5","source":{"kind":"arxiv","id":"1402.5653","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.5653","created_at":"2026-05-18T01:12:50Z"},{"alias_kind":"arxiv_version","alias_value":"1402.5653v4","created_at":"2026-05-18T01:12:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.5653","created_at":"2026-05-18T01:12:50Z"},{"alias_kind":"pith_short_12","alias_value":"H7SA6RMO675O","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_16","alias_value":"H7SA6RMO675OYN4A","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_8","alias_value":"H7SA6RMO","created_at":"2026-05-18T12:28:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:H7SA6RMO675OYN4AT6I2PWNNOP","target":"record","payload":{"canonical_record":{"source":{"id":"1402.5653","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-02-23T19:00:28Z","cross_cats_sorted":[],"title_canon_sha256":"bb3d8438a68928e6caad21e86fa1657f18b24e752925630856f60cd75a9efdbf","abstract_canon_sha256":"7b01cef3c6dfedeefaa4326bb195892f34e31ade5f9e259902033ac3a78c4a60"},"schema_version":"1.0"},"canonical_sha256":"3fe40f458ef7faec37809f91a7d9ad73cc0b08b5842d7c5b5c0794854c8607b5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:12:50.180923Z","signature_b64":"pMVacdWAp93FboXnp2ADREInxA+Dk9+GTXXmG2opVLxPM3Ks0JM3JtM/l1gYT7LsnnXp2GT6SsUiZdsOta9nBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3fe40f458ef7faec37809f91a7d9ad73cc0b08b5842d7c5b5c0794854c8607b5","last_reissued_at":"2026-05-18T01:12:50.180555Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:12:50.180555Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1402.5653","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:12:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Fo2bjqVUSPYTm801eXWSDtPdxdsLEHfBd/v2pVGO8Xz6UM4JV6eSsMOKjmYVhJZW0QoAE8IF9bRafwQJhr5cDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T02:50:17.975547Z"},"content_sha256":"fa095070f42c9b69c1bf4eb52b355639cc62d8f998f06e18a6a08696887d1f58","schema_version":"1.0","event_id":"sha256:fa095070f42c9b69c1bf4eb52b355639cc62d8f998f06e18a6a08696887d1f58"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:H7SA6RMO675OYN4AT6I2PWNNOP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Crucial tests of macrorealist and semi-classical gravity models with freely falling mesoscopic nanospheres","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Ralph Willox, Samuel Colin, Thomas Durt","submitted_at":"2014-02-23T19:00:28Z","abstract_excerpt":"Recently, several proposals have been made to test the quantum superposition principle in the mesoscopic regime. Most of these tests consist of a careful measurement of the loss of interference due to decoherence. Here we consider, instead, the spread in position of a freely falling nanosphere. We study in depth the dependence of this spread on self-gravity in the presence of decoherence (exotic and non-exotic). We show that the influence of self-gravity is robust in the presence of weak decoherence, and quantify this robustness by introducing a new parameter, the critical decoherence, aimed a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.5653","kind":"arxiv","version":4},"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":"2026-05-18T01:12:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OSVXUS67RSmMgJnp2f3WIHVIx0izVMWq0JnbNLGcong02Kw9V/yu8EEkyiSUCyt+qtQTt0lbWUiWF5uV27mZCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T02:50:17.976228Z"},"content_sha256":"1c00c3446ee1d358aa29f01320a35864ac95b38eb30a7c7947db92cc06b40d3c","schema_version":"1.0","event_id":"sha256:1c00c3446ee1d358aa29f01320a35864ac95b38eb30a7c7947db92cc06b40d3c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/H7SA6RMO675OYN4AT6I2PWNNOP/bundle.json","state_url":"https://pith.science/pith/H7SA6RMO675OYN4AT6I2PWNNOP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/H7SA6RMO675OYN4AT6I2PWNNOP/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":"2026-05-27T02:50:17Z","links":{"resolver":"https://pith.science/pith/H7SA6RMO675OYN4AT6I2PWNNOP","bundle":"https://pith.science/pith/H7SA6RMO675OYN4AT6I2PWNNOP/bundle.json","state":"https://pith.science/pith/H7SA6RMO675OYN4AT6I2PWNNOP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/H7SA6RMO675OYN4AT6I2PWNNOP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:H7SA6RMO675OYN4AT6I2PWNNOP","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":"7b01cef3c6dfedeefaa4326bb195892f34e31ade5f9e259902033ac3a78c4a60","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-02-23T19:00:28Z","title_canon_sha256":"bb3d8438a68928e6caad21e86fa1657f18b24e752925630856f60cd75a9efdbf"},"schema_version":"1.0","source":{"id":"1402.5653","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.5653","created_at":"2026-05-18T01:12:50Z"},{"alias_kind":"arxiv_version","alias_value":"1402.5653v4","created_at":"2026-05-18T01:12:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.5653","created_at":"2026-05-18T01:12:50Z"},{"alias_kind":"pith_short_12","alias_value":"H7SA6RMO675O","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_16","alias_value":"H7SA6RMO675OYN4A","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_8","alias_value":"H7SA6RMO","created_at":"2026-05-18T12:28:30Z"}],"graph_snapshots":[{"event_id":"sha256:1c00c3446ee1d358aa29f01320a35864ac95b38eb30a7c7947db92cc06b40d3c","target":"graph","created_at":"2026-05-18T01:12:50Z","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"},"paper":{"abstract_excerpt":"Recently, several proposals have been made to test the quantum superposition principle in the mesoscopic regime. Most of these tests consist of a careful measurement of the loss of interference due to decoherence. Here we consider, instead, the spread in position of a freely falling nanosphere. We study in depth the dependence of this spread on self-gravity in the presence of decoherence (exotic and non-exotic). We show that the influence of self-gravity is robust in the presence of weak decoherence, and quantify this robustness by introducing a new parameter, the critical decoherence, aimed a","authors_text":"Ralph Willox, Samuel Colin, Thomas Durt","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-02-23T19:00:28Z","title":"Crucial tests of macrorealist and semi-classical gravity models with freely falling mesoscopic nanospheres"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.5653","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:fa095070f42c9b69c1bf4eb52b355639cc62d8f998f06e18a6a08696887d1f58","target":"record","created_at":"2026-05-18T01:12:50Z","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":"7b01cef3c6dfedeefaa4326bb195892f34e31ade5f9e259902033ac3a78c4a60","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-02-23T19:00:28Z","title_canon_sha256":"bb3d8438a68928e6caad21e86fa1657f18b24e752925630856f60cd75a9efdbf"},"schema_version":"1.0","source":{"id":"1402.5653","kind":"arxiv","version":4}},"canonical_sha256":"3fe40f458ef7faec37809f91a7d9ad73cc0b08b5842d7c5b5c0794854c8607b5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3fe40f458ef7faec37809f91a7d9ad73cc0b08b5842d7c5b5c0794854c8607b5","first_computed_at":"2026-05-18T01:12:50.180555Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:12:50.180555Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pMVacdWAp93FboXnp2ADREInxA+Dk9+GTXXmG2opVLxPM3Ks0JM3JtM/l1gYT7LsnnXp2GT6SsUiZdsOta9nBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:12:50.180923Z","signed_message":"canonical_sha256_bytes"},"source_id":"1402.5653","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fa095070f42c9b69c1bf4eb52b355639cc62d8f998f06e18a6a08696887d1f58","sha256:1c00c3446ee1d358aa29f01320a35864ac95b38eb30a7c7947db92cc06b40d3c"],"state_sha256":"e07c071570ffe98c7b6ab0925928c8f82403f2b27954362d0277f43d967c629b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VCYxAFv/lVmVjA2Kz4ZEa+QOtA5PEyiNYhdZoXXWsAr+y2V3Lf3hXBgQGh0e7EmDMInRd0nEWYVhyokUZ2jCCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T02:50:17.980085Z","bundle_sha256":"3cee99e79eca508775394504ea33c9fd92bf80cc302c696569982a81c75fd676"}}