{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:4X5L5XKQ67UOBTDQ7BHWNUN3J6","short_pith_number":"pith:4X5L5XKQ","schema_version":"1.0","canonical_sha256":"e5fabedd50f7e8e0cc70f84f66d1bb4f8229cdfdf0d6f0e56b8b2ddcea1b6a52","source":{"kind":"arxiv","id":"1504.07509","version":1},"attestation_state":"computed","paper":{"title":"Photons with sub-Planckian Energy Cannot Efficiently Probe Space-Time Foam","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"Linqing Wen, Yanbei Chen, Yiqiu Ma","submitted_at":"2015-04-24T12:27:38Z","abstract_excerpt":"Extra-galactic sources of photons have been used to constrain space-time quantum fluctuations in the Universe. In these proposals, the fundamental \"fuzziness\" of distance caused by space-time quantum fluctuations has been directly identified with fluctuations in optical paths. Phase-front corrugations deduced from these optical-path fluctuations are then applied to light from extra-galactic point sources, and used to constrain various models of quantum gravity. However, when a photon propagates in three spatial dimensions, it does not follow a specific ray, but rather samples a finite, three-d"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1504.07509","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-04-24T12:27:38Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"e71c2eb4a633ee03365ec2ab3b67b3e5a09b399c45af2acd3fe90961bd2bdf4d","abstract_canon_sha256":"adfe56311929546074cd1a8e0b62d02f9840a1c04403c40804cd41065b87a9a9"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:48.755202Z","signature_b64":"c9Owgy1JdIsRL+4dnjDz9UPSLmUZSwJhndNev6hFNcViWXHIj8K2nynR9K9UnK8sJw84VK9lzg5FXyijXENTDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e5fabedd50f7e8e0cc70f84f66d1bb4f8229cdfdf0d6f0e56b8b2ddcea1b6a52","last_reissued_at":"2026-05-18T01:40:48.754567Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:48.754567Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Photons with sub-Planckian Energy Cannot Efficiently Probe Space-Time Foam","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"Linqing Wen, Yanbei Chen, Yiqiu Ma","submitted_at":"2015-04-24T12:27:38Z","abstract_excerpt":"Extra-galactic sources of photons have been used to constrain space-time quantum fluctuations in the Universe. In these proposals, the fundamental \"fuzziness\" of distance caused by space-time quantum fluctuations has been directly identified with fluctuations in optical paths. Phase-front corrugations deduced from these optical-path fluctuations are then applied to light from extra-galactic point sources, and used to constrain various models of quantum gravity. However, when a photon propagates in three spatial dimensions, it does not follow a specific ray, but rather samples a finite, three-d"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.07509","kind":"arxiv","version":1},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1504.07509","created_at":"2026-05-18T01:40:48.754667+00:00"},{"alias_kind":"arxiv_version","alias_value":"1504.07509v1","created_at":"2026-05-18T01:40:48.754667+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.07509","created_at":"2026-05-18T01:40:48.754667+00:00"},{"alias_kind":"pith_short_12","alias_value":"4X5L5XKQ67UO","created_at":"2026-05-18T12:29:05.191682+00:00"},{"alias_kind":"pith_short_16","alias_value":"4X5L5XKQ67UOBTDQ","created_at":"2026-05-18T12:29:05.191682+00:00"},{"alias_kind":"pith_short_8","alias_value":"4X5L5XKQ","created_at":"2026-05-18T12:29:05.191682+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/4X5L5XKQ67UOBTDQ7BHWNUN3J6","json":"https://pith.science/pith/4X5L5XKQ67UOBTDQ7BHWNUN3J6.json","graph_json":"https://pith.science/api/pith-number/4X5L5XKQ67UOBTDQ7BHWNUN3J6/graph.json","events_json":"https://pith.science/api/pith-number/4X5L5XKQ67UOBTDQ7BHWNUN3J6/events.json","paper":"https://pith.science/paper/4X5L5XKQ"},"agent_actions":{"view_html":"https://pith.science/pith/4X5L5XKQ67UOBTDQ7BHWNUN3J6","download_json":"https://pith.science/pith/4X5L5XKQ67UOBTDQ7BHWNUN3J6.json","view_paper":"https://pith.science/paper/4X5L5XKQ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1504.07509&json=true","fetch_graph":"https://pith.science/api/pith-number/4X5L5XKQ67UOBTDQ7BHWNUN3J6/graph.json","fetch_events":"https://pith.science/api/pith-number/4X5L5XKQ67UOBTDQ7BHWNUN3J6/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/4X5L5XKQ67UOBTDQ7BHWNUN3J6/action/timestamp_anchor","attest_storage":"https://pith.science/pith/4X5L5XKQ67UOBTDQ7BHWNUN3J6/action/storage_attestation","attest_author":"https://pith.science/pith/4X5L5XKQ67UOBTDQ7BHWNUN3J6/action/author_attestation","sign_citation":"https://pith.science/pith/4X5L5XKQ67UOBTDQ7BHWNUN3J6/action/citation_signature","submit_replication":"https://pith.science/pith/4X5L5XKQ67UOBTDQ7BHWNUN3J6/action/replication_record"}},"created_at":"2026-05-18T01:40:48.754667+00:00","updated_at":"2026-05-18T01:40:48.754667+00:00"}