{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:L7V3PBD2HIJS72MHPJNZVLGL4E","short_pith_number":"pith:L7V3PBD2","canonical_record":{"source":{"id":"1209.4472","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2012-09-20T09:21:55Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"af72bedf302cb097fc4fbb1d720cc98b2322918b1954528fd0658da6764ea347","abstract_canon_sha256":"a5867f724afbb0d73653012c5eaebddfbd7d8c84660b105706176affa980f2aa"},"schema_version":"1.0"},"canonical_sha256":"5febb7847a3a132fe9877a5b9aaccbe1177feca27b1d3713dfb8c8b3cfbe844b","source":{"kind":"arxiv","id":"1209.4472","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.4472","created_at":"2026-05-18T03:45:11Z"},{"alias_kind":"arxiv_version","alias_value":"1209.4472v1","created_at":"2026-05-18T03:45:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.4472","created_at":"2026-05-18T03:45:11Z"},{"alias_kind":"pith_short_12","alias_value":"L7V3PBD2HIJS","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"L7V3PBD2HIJS72MH","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"L7V3PBD2","created_at":"2026-05-18T12:27:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:L7V3PBD2HIJS72MHPJNZVLGL4E","target":"record","payload":{"canonical_record":{"source":{"id":"1209.4472","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2012-09-20T09:21:55Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"af72bedf302cb097fc4fbb1d720cc98b2322918b1954528fd0658da6764ea347","abstract_canon_sha256":"a5867f724afbb0d73653012c5eaebddfbd7d8c84660b105706176affa980f2aa"},"schema_version":"1.0"},"canonical_sha256":"5febb7847a3a132fe9877a5b9aaccbe1177feca27b1d3713dfb8c8b3cfbe844b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:45:11.620195Z","signature_b64":"ICHeiMJEvXlU1aSDGP9PPR4x0G/ljIy2qbg7xXKuU0WeMWt6I9vq3ieIw0uyhYTb7GRRCxz0opuge4G+TKCmBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5febb7847a3a132fe9877a5b9aaccbe1177feca27b1d3713dfb8c8b3cfbe844b","last_reissued_at":"2026-05-18T03:45:11.619507Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:45:11.619507Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1209.4472","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:45:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KX35MfAt9eOxe6Y6P7sP1eCrTCvtjPZx20Qq1gUYg7Pt7146L5cDTJxSab3uqCFK0GnKumLRbyLtoXlA0pU0Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T19:07:02.750464Z"},"content_sha256":"461bc9ad2396f7c5819740fc70d097b9fc43d0e50052e9af7d031287f16ded61","schema_version":"1.0","event_id":"sha256:461bc9ad2396f7c5819740fc70d097b9fc43d0e50052e9af7d031287f16ded61"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:L7V3PBD2HIJS72MHPJNZVLGL4E","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Two-dimensional quantum dilaton gravity and the quantized cosmological constant","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"hep-th","authors_text":"CP3), Simone Zonetti (1) ((1) Louvain U.","submitted_at":"2012-09-20T09:21:55Z","abstract_excerpt":"The cosmological constant problem is one of the long-standing issues of modern physics. While we can measure the value of the cosmological constant with great accuracy, we are not able to calculate it in a coherent theoretical framework. On the contrary the theoretical predictions in Quantum Field Theory are radically different from observations. This disagreement is a hint of the difficult conciliation of Quantum Mechanics and General Relativity in a theory of Quantum Gravity. Current approaches to the cosmological constant problem, in particular, do not account for the quantum nature of the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.4472","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:45:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kAp34eHyHnNBgpztvwkM0T7f1WA3bgKefZbORTFoy2YgFjOqEaSMwIWySuw/ohGSvbg4otNMWbG98+o5u6odCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T19:07:02.751057Z"},"content_sha256":"13741da18433876ee50bc25a009d16ccd7b98083e7291ab661b5e6a997bfed0e","schema_version":"1.0","event_id":"sha256:13741da18433876ee50bc25a009d16ccd7b98083e7291ab661b5e6a997bfed0e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/L7V3PBD2HIJS72MHPJNZVLGL4E/bundle.json","state_url":"https://pith.science/pith/L7V3PBD2HIJS72MHPJNZVLGL4E/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/L7V3PBD2HIJS72MHPJNZVLGL4E/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":"2026-05-28T19:07:02Z","links":{"resolver":"https://pith.science/pith/L7V3PBD2HIJS72MHPJNZVLGL4E","bundle":"https://pith.science/pith/L7V3PBD2HIJS72MHPJNZVLGL4E/bundle.json","state":"https://pith.science/pith/L7V3PBD2HIJS72MHPJNZVLGL4E/state.json","well_known_bundle":"https://pith.science/.well-known/pith/L7V3PBD2HIJS72MHPJNZVLGL4E/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:L7V3PBD2HIJS72MHPJNZVLGL4E","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":"a5867f724afbb0d73653012c5eaebddfbd7d8c84660b105706176affa980f2aa","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2012-09-20T09:21:55Z","title_canon_sha256":"af72bedf302cb097fc4fbb1d720cc98b2322918b1954528fd0658da6764ea347"},"schema_version":"1.0","source":{"id":"1209.4472","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.4472","created_at":"2026-05-18T03:45:11Z"},{"alias_kind":"arxiv_version","alias_value":"1209.4472v1","created_at":"2026-05-18T03:45:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.4472","created_at":"2026-05-18T03:45:11Z"},{"alias_kind":"pith_short_12","alias_value":"L7V3PBD2HIJS","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"L7V3PBD2HIJS72MH","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"L7V3PBD2","created_at":"2026-05-18T12:27:14Z"}],"graph_snapshots":[{"event_id":"sha256:13741da18433876ee50bc25a009d16ccd7b98083e7291ab661b5e6a997bfed0e","target":"graph","created_at":"2026-05-18T03:45:11Z","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":"The cosmological constant problem is one of the long-standing issues of modern physics. While we can measure the value of the cosmological constant with great accuracy, we are not able to calculate it in a coherent theoretical framework. On the contrary the theoretical predictions in Quantum Field Theory are radically different from observations. This disagreement is a hint of the difficult conciliation of Quantum Mechanics and General Relativity in a theory of Quantum Gravity. Current approaches to the cosmological constant problem, in particular, do not account for the quantum nature of the ","authors_text":"CP3), Simone Zonetti (1) ((1) Louvain U.","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2012-09-20T09:21:55Z","title":"Two-dimensional quantum dilaton gravity and the quantized cosmological constant"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.4472","kind":"arxiv","version":1},"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":"sha256:461bc9ad2396f7c5819740fc70d097b9fc43d0e50052e9af7d031287f16ded61","target":"record","created_at":"2026-05-18T03:45:11Z","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":"a5867f724afbb0d73653012c5eaebddfbd7d8c84660b105706176affa980f2aa","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2012-09-20T09:21:55Z","title_canon_sha256":"af72bedf302cb097fc4fbb1d720cc98b2322918b1954528fd0658da6764ea347"},"schema_version":"1.0","source":{"id":"1209.4472","kind":"arxiv","version":1}},"canonical_sha256":"5febb7847a3a132fe9877a5b9aaccbe1177feca27b1d3713dfb8c8b3cfbe844b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5febb7847a3a132fe9877a5b9aaccbe1177feca27b1d3713dfb8c8b3cfbe844b","first_computed_at":"2026-05-18T03:45:11.619507Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:45:11.619507Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ICHeiMJEvXlU1aSDGP9PPR4x0G/ljIy2qbg7xXKuU0WeMWt6I9vq3ieIw0uyhYTb7GRRCxz0opuge4G+TKCmBw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:45:11.620195Z","signed_message":"canonical_sha256_bytes"},"source_id":"1209.4472","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:461bc9ad2396f7c5819740fc70d097b9fc43d0e50052e9af7d031287f16ded61","sha256:13741da18433876ee50bc25a009d16ccd7b98083e7291ab661b5e6a997bfed0e"],"state_sha256":"101f34e7950dcd23dd1805df2d15b6209e4cf927a62c6403c30e17bb22053935"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6/pmhhgLZv6n3quYazGskz75xTuP/GQTf9TxIiYN6Sp7tkwuCOco7Nd044nAery4a4mGAlsnZ+52sgfubBgADg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T19:07:02.754344Z","bundle_sha256":"abdcb40ca5d863223e54e062b178839982d68058bd5b0452166e939d2b9aee94"}}