{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:OGOKVPIZ7QKD6YAWSTKMZPH5V3","short_pith_number":"pith:OGOKVPIZ","schema_version":"1.0","canonical_sha256":"719caabd19fc143f601694d4ccbcfdaefa3aa379251e4caf8a7d5fc741949173","source":{"kind":"arxiv","id":"0906.3947","version":2},"attestation_state":"computed","paper":{"title":"Quantum gravity as sum over spacetimes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-lat","hep-th"],"primary_cat":"gr-qc","authors_text":"Jan Ambjorn, Jerzy Jurkiewicz, Renate Loll","submitted_at":"2009-06-22T08:55:27Z","abstract_excerpt":"A major unsolved problem in theoretical physics is to reconcile the classical theory of general relativity with quantum mechanics. These lectures will deal with an attempt to describe quantum gravity as a path integral over geometries known as \"Causal Dynamical Triangulations\" (CDT)."},"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":"0906.3947","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2009-06-22T08:55:27Z","cross_cats_sorted":["hep-lat","hep-th"],"title_canon_sha256":"81fce9c019aceef50a7204d8646d179c8fcdbf5279b86ae7b2cfe7c623acfaed","abstract_canon_sha256":"6d245a7b4a1733e6853a551c83d374a4c5a51d145387fc4ef5cee41159fda4dc"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:34:45.532067Z","signature_b64":"xvwQy+U37xffB4yvoWgodAJ9gdDIkoUkXX/Y2OskShmQn44Kjf8viSNY1tZptexwFBxO7GYIl1/6IxGYnWE+DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"719caabd19fc143f601694d4ccbcfdaefa3aa379251e4caf8a7d5fc741949173","last_reissued_at":"2026-05-18T02:34:45.531650Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:34:45.531650Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Quantum gravity as sum over spacetimes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-lat","hep-th"],"primary_cat":"gr-qc","authors_text":"Jan Ambjorn, Jerzy Jurkiewicz, Renate Loll","submitted_at":"2009-06-22T08:55:27Z","abstract_excerpt":"A major unsolved problem in theoretical physics is to reconcile the classical theory of general relativity with quantum mechanics. These lectures will deal with an attempt to describe quantum gravity as a path integral over geometries known as \"Causal Dynamical Triangulations\" (CDT)."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.3947","kind":"arxiv","version":2},"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":"0906.3947","created_at":"2026-05-18T02:34:45.531717+00:00"},{"alias_kind":"arxiv_version","alias_value":"0906.3947v2","created_at":"2026-05-18T02:34:45.531717+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.3947","created_at":"2026-05-18T02:34:45.531717+00:00"},{"alias_kind":"pith_short_12","alias_value":"OGOKVPIZ7QKD","created_at":"2026-05-18T12:26:01.383474+00:00"},{"alias_kind":"pith_short_16","alias_value":"OGOKVPIZ7QKD6YAW","created_at":"2026-05-18T12:26:01.383474+00:00"},{"alias_kind":"pith_short_8","alias_value":"OGOKVPIZ","created_at":"2026-05-18T12:26:01.383474+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/OGOKVPIZ7QKD6YAWSTKMZPH5V3","json":"https://pith.science/pith/OGOKVPIZ7QKD6YAWSTKMZPH5V3.json","graph_json":"https://pith.science/api/pith-number/OGOKVPIZ7QKD6YAWSTKMZPH5V3/graph.json","events_json":"https://pith.science/api/pith-number/OGOKVPIZ7QKD6YAWSTKMZPH5V3/events.json","paper":"https://pith.science/paper/OGOKVPIZ"},"agent_actions":{"view_html":"https://pith.science/pith/OGOKVPIZ7QKD6YAWSTKMZPH5V3","download_json":"https://pith.science/pith/OGOKVPIZ7QKD6YAWSTKMZPH5V3.json","view_paper":"https://pith.science/paper/OGOKVPIZ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0906.3947&json=true","fetch_graph":"https://pith.science/api/pith-number/OGOKVPIZ7QKD6YAWSTKMZPH5V3/graph.json","fetch_events":"https://pith.science/api/pith-number/OGOKVPIZ7QKD6YAWSTKMZPH5V3/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/OGOKVPIZ7QKD6YAWSTKMZPH5V3/action/timestamp_anchor","attest_storage":"https://pith.science/pith/OGOKVPIZ7QKD6YAWSTKMZPH5V3/action/storage_attestation","attest_author":"https://pith.science/pith/OGOKVPIZ7QKD6YAWSTKMZPH5V3/action/author_attestation","sign_citation":"https://pith.science/pith/OGOKVPIZ7QKD6YAWSTKMZPH5V3/action/citation_signature","submit_replication":"https://pith.science/pith/OGOKVPIZ7QKD6YAWSTKMZPH5V3/action/replication_record"}},"created_at":"2026-05-18T02:34:45.531717+00:00","updated_at":"2026-05-18T02:34:45.531717+00:00"}