{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:URJSJYNMFAKKJBEYA5PWVVO5JX","short_pith_number":"pith:URJSJYNM","schema_version":"1.0","canonical_sha256":"a45324e1ac2814a48498075f6ad5dd4de32f46754f89fbf906735a41ad94a31e","source":{"kind":"arxiv","id":"1108.6005","version":1},"attestation_state":"computed","paper":{"title":"No quantum gravity signature from the farthest quasars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","hep-th","quant-ph"],"primary_cat":"gr-qc","authors_text":"(2) Dept. of Physics, (3) INAF - Osservatorio Astronomico di Capodimonte, 4), (4) International Center for Relativistic Astrophysics Network, (5) European Southern Observatory, Carmine Cuofano (2), Fabrizio Tamburini (1), Garching bei Muenchen, Germany), Italy, Massimo Della Valle (3, Naples, Pescara, Roberto Gilmozzi (5) ((1) Dept. of Astronomy, University of Ferrara, University of Padova","submitted_at":"2011-08-30T16:37:45Z","abstract_excerpt":"Context: Strings and other alternative theories describing the quantum properties of space-time suggest that space-time could present a foamy structure and also that, in certain cases, quantum gravity (QG) may manifest at energies much below the Planck scale. One of the observable effects could be the degradation of the diffraction images of distant sources.\n  Aims: We searched for this degradation effect, caused by QG fluctuations, in the light of the farthest quasars (QSOs) observed by the Hubble Space Telescope with the aim of setting new limits on the fluctuations of the space-time foam an"},"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":"1108.6005","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2011-08-30T16:37:45Z","cross_cats_sorted":["astro-ph.CO","hep-th","quant-ph"],"title_canon_sha256":"045c39197bcd751214260045ad76c1d33667a36b35defcb44b115c51a379f3b5","abstract_canon_sha256":"a0fe605f691b706b1e0d0cad6a1cf2ebe90c5c6e4d9848abec9632c3600e920f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:12:10.081521Z","signature_b64":"Iu63JFWPH0+4sepzLJnbUXfaqGKjoTB4NJbxB0OeuQ/gcFK+O4MjKT7O4EgvjFDKU1kbMbgkThIky7vbrD0EDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a45324e1ac2814a48498075f6ad5dd4de32f46754f89fbf906735a41ad94a31e","last_reissued_at":"2026-05-18T04:12:10.081039Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:12:10.081039Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"No quantum gravity signature from the farthest quasars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","hep-th","quant-ph"],"primary_cat":"gr-qc","authors_text":"(2) Dept. of Physics, (3) INAF - Osservatorio Astronomico di Capodimonte, 4), (4) International Center for Relativistic Astrophysics Network, (5) European Southern Observatory, Carmine Cuofano (2), Fabrizio Tamburini (1), Garching bei Muenchen, Germany), Italy, Massimo Della Valle (3, Naples, Pescara, Roberto Gilmozzi (5) ((1) Dept. of Astronomy, University of Ferrara, University of Padova","submitted_at":"2011-08-30T16:37:45Z","abstract_excerpt":"Context: Strings and other alternative theories describing the quantum properties of space-time suggest that space-time could present a foamy structure and also that, in certain cases, quantum gravity (QG) may manifest at energies much below the Planck scale. One of the observable effects could be the degradation of the diffraction images of distant sources.\n  Aims: We searched for this degradation effect, caused by QG fluctuations, in the light of the farthest quasars (QSOs) observed by the Hubble Space Telescope with the aim of setting new limits on the fluctuations of the space-time foam an"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1108.6005","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":"1108.6005","created_at":"2026-05-18T04:12:10.081114+00:00"},{"alias_kind":"arxiv_version","alias_value":"1108.6005v1","created_at":"2026-05-18T04:12:10.081114+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1108.6005","created_at":"2026-05-18T04:12:10.081114+00:00"},{"alias_kind":"pith_short_12","alias_value":"URJSJYNMFAKK","created_at":"2026-05-18T12:26:42.757692+00:00"},{"alias_kind":"pith_short_16","alias_value":"URJSJYNMFAKKJBEY","created_at":"2026-05-18T12:26:42.757692+00:00"},{"alias_kind":"pith_short_8","alias_value":"URJSJYNM","created_at":"2026-05-18T12:26:42.757692+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/URJSJYNMFAKKJBEYA5PWVVO5JX","json":"https://pith.science/pith/URJSJYNMFAKKJBEYA5PWVVO5JX.json","graph_json":"https://pith.science/api/pith-number/URJSJYNMFAKKJBEYA5PWVVO5JX/graph.json","events_json":"https://pith.science/api/pith-number/URJSJYNMFAKKJBEYA5PWVVO5JX/events.json","paper":"https://pith.science/paper/URJSJYNM"},"agent_actions":{"view_html":"https://pith.science/pith/URJSJYNMFAKKJBEYA5PWVVO5JX","download_json":"https://pith.science/pith/URJSJYNMFAKKJBEYA5PWVVO5JX.json","view_paper":"https://pith.science/paper/URJSJYNM","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1108.6005&json=true","fetch_graph":"https://pith.science/api/pith-number/URJSJYNMFAKKJBEYA5PWVVO5JX/graph.json","fetch_events":"https://pith.science/api/pith-number/URJSJYNMFAKKJBEYA5PWVVO5JX/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/URJSJYNMFAKKJBEYA5PWVVO5JX/action/timestamp_anchor","attest_storage":"https://pith.science/pith/URJSJYNMFAKKJBEYA5PWVVO5JX/action/storage_attestation","attest_author":"https://pith.science/pith/URJSJYNMFAKKJBEYA5PWVVO5JX/action/author_attestation","sign_citation":"https://pith.science/pith/URJSJYNMFAKKJBEYA5PWVVO5JX/action/citation_signature","submit_replication":"https://pith.science/pith/URJSJYNMFAKKJBEYA5PWVVO5JX/action/replication_record"}},"created_at":"2026-05-18T04:12:10.081114+00:00","updated_at":"2026-05-18T04:12:10.081114+00:00"}