{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:WXMFHQNQ5MWVEPFXUQ7L7UZD2M","short_pith_number":"pith:WXMFHQNQ","canonical_record":{"source":{"id":"1005.1291","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2010-05-07T20:05:31Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"027942bd4a918b842880734db62979c18d522371ca9b8443fe2cce4c1a3bec1a","abstract_canon_sha256":"a2098439f4ec64fd64e013ea045057b581fdb837f20d37b7d0d208631e97a8ae"},"schema_version":"1.0"},"canonical_sha256":"b5d853c1b0eb2d523cb7a43ebfd323d3212e30c95df631053d51fdb2db4845d3","source":{"kind":"arxiv","id":"1005.1291","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1005.1291","created_at":"2026-05-18T04:31:41Z"},{"alias_kind":"arxiv_version","alias_value":"1005.1291v1","created_at":"2026-05-18T04:31:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1005.1291","created_at":"2026-05-18T04:31:41Z"},{"alias_kind":"pith_short_12","alias_value":"WXMFHQNQ5MWV","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_16","alias_value":"WXMFHQNQ5MWVEPFX","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_8","alias_value":"WXMFHQNQ","created_at":"2026-05-18T12:26:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:WXMFHQNQ5MWVEPFXUQ7L7UZD2M","target":"record","payload":{"canonical_record":{"source":{"id":"1005.1291","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2010-05-07T20:05:31Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"027942bd4a918b842880734db62979c18d522371ca9b8443fe2cce4c1a3bec1a","abstract_canon_sha256":"a2098439f4ec64fd64e013ea045057b581fdb837f20d37b7d0d208631e97a8ae"},"schema_version":"1.0"},"canonical_sha256":"b5d853c1b0eb2d523cb7a43ebfd323d3212e30c95df631053d51fdb2db4845d3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:31:41.206628Z","signature_b64":"VQw2x6lIWjDLFJpkjT8lKTG0hiSlKncrmlcl6t0DVllOqYxLi2kGYjsofu4SX06zxxUc7uI0Ycye3O5sj8eDBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b5d853c1b0eb2d523cb7a43ebfd323d3212e30c95df631053d51fdb2db4845d3","last_reissued_at":"2026-05-18T04:31:41.206082Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:31:41.206082Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1005.1291","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":"2026-05-18T04:31:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Cl4WqyDi1cqpr0Km0a9PGvE+aT43UDkoiadwx883pPCI/2CIzgSsefOpB+K5KmPntuz6bMGTGd9xU6EXSfq6AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T20:00:35.520513Z"},"content_sha256":"1121e3b020bf07d6df5999b27dcd311a9f5faebe215bf4ffde277a996cbbcb17","schema_version":"1.0","event_id":"sha256:1121e3b020bf07d6df5999b27dcd311a9f5faebe215bf4ffde277a996cbbcb17"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:WXMFHQNQ5MWVEPFXUQ7L7UZD2M","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Immirzi Parameter as an Instanton Angle","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"hep-th","authors_text":"Andrew Randono, Simone Mercuri","submitted_at":"2010-05-07T20:05:31Z","abstract_excerpt":"The Barbero-Immirzi parameter is a one parameter quantization ambiguity underpinning the loop approach to quantum gravity that bears tantalizing similarities to the theta parameter of gauge theories such as Yang-Mills and QCD. Despite the apparent semblance, the Barbero-Immirzi field has resisted a direct topological interpretation along the same lines as the theta-parameter. Here we offer such an interpretation. Our approach begins from the perspective of Einstein-Cartan gravity as the symmetry broken phase of a de Sitter gauge theory. From this angle, just as in ordinary gauge theories, a th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1005.1291","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":"2026-05-18T04:31:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OT0+KpR65TuMuTBVauX5Xb1xnevaIgKoiY/0lIDux5Kuon0nxcRg9hzinnuDT6i+XhZV0yK1ykK/pwWnldZCAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T20:00:35.521249Z"},"content_sha256":"bf2f17eb17d495b3d18b95d665c0f8f23764c34500f69ee4be6b3613da6fa694","schema_version":"1.0","event_id":"sha256:bf2f17eb17d495b3d18b95d665c0f8f23764c34500f69ee4be6b3613da6fa694"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WXMFHQNQ5MWVEPFXUQ7L7UZD2M/bundle.json","state_url":"https://pith.science/pith/WXMFHQNQ5MWVEPFXUQ7L7UZD2M/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WXMFHQNQ5MWVEPFXUQ7L7UZD2M/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":"2026-06-05T20:00:35Z","links":{"resolver":"https://pith.science/pith/WXMFHQNQ5MWVEPFXUQ7L7UZD2M","bundle":"https://pith.science/pith/WXMFHQNQ5MWVEPFXUQ7L7UZD2M/bundle.json","state":"https://pith.science/pith/WXMFHQNQ5MWVEPFXUQ7L7UZD2M/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WXMFHQNQ5MWVEPFXUQ7L7UZD2M/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:WXMFHQNQ5MWVEPFXUQ7L7UZD2M","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":"a2098439f4ec64fd64e013ea045057b581fdb837f20d37b7d0d208631e97a8ae","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2010-05-07T20:05:31Z","title_canon_sha256":"027942bd4a918b842880734db62979c18d522371ca9b8443fe2cce4c1a3bec1a"},"schema_version":"1.0","source":{"id":"1005.1291","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1005.1291","created_at":"2026-05-18T04:31:41Z"},{"alias_kind":"arxiv_version","alias_value":"1005.1291v1","created_at":"2026-05-18T04:31:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1005.1291","created_at":"2026-05-18T04:31:41Z"},{"alias_kind":"pith_short_12","alias_value":"WXMFHQNQ5MWV","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_16","alias_value":"WXMFHQNQ5MWVEPFX","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_8","alias_value":"WXMFHQNQ","created_at":"2026-05-18T12:26:17Z"}],"graph_snapshots":[{"event_id":"sha256:bf2f17eb17d495b3d18b95d665c0f8f23764c34500f69ee4be6b3613da6fa694","target":"graph","created_at":"2026-05-18T04:31:41Z","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 Barbero-Immirzi parameter is a one parameter quantization ambiguity underpinning the loop approach to quantum gravity that bears tantalizing similarities to the theta parameter of gauge theories such as Yang-Mills and QCD. Despite the apparent semblance, the Barbero-Immirzi field has resisted a direct topological interpretation along the same lines as the theta-parameter. Here we offer such an interpretation. Our approach begins from the perspective of Einstein-Cartan gravity as the symmetry broken phase of a de Sitter gauge theory. From this angle, just as in ordinary gauge theories, a th","authors_text":"Andrew Randono, Simone Mercuri","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2010-05-07T20:05:31Z","title":"The Immirzi Parameter as an Instanton Angle"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1005.1291","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":"sha256:1121e3b020bf07d6df5999b27dcd311a9f5faebe215bf4ffde277a996cbbcb17","target":"record","created_at":"2026-05-18T04:31:41Z","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":"a2098439f4ec64fd64e013ea045057b581fdb837f20d37b7d0d208631e97a8ae","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2010-05-07T20:05:31Z","title_canon_sha256":"027942bd4a918b842880734db62979c18d522371ca9b8443fe2cce4c1a3bec1a"},"schema_version":"1.0","source":{"id":"1005.1291","kind":"arxiv","version":1}},"canonical_sha256":"b5d853c1b0eb2d523cb7a43ebfd323d3212e30c95df631053d51fdb2db4845d3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b5d853c1b0eb2d523cb7a43ebfd323d3212e30c95df631053d51fdb2db4845d3","first_computed_at":"2026-05-18T04:31:41.206082Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:31:41.206082Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VQw2x6lIWjDLFJpkjT8lKTG0hiSlKncrmlcl6t0DVllOqYxLi2kGYjsofu4SX06zxxUc7uI0Ycye3O5sj8eDBw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:31:41.206628Z","signed_message":"canonical_sha256_bytes"},"source_id":"1005.1291","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1121e3b020bf07d6df5999b27dcd311a9f5faebe215bf4ffde277a996cbbcb17","sha256:bf2f17eb17d495b3d18b95d665c0f8f23764c34500f69ee4be6b3613da6fa694"],"state_sha256":"eac7c91de705c1272498fdae4557b8a6371e64077e89249a438ff590045c26f0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xMX1ps1ki0EZgIQOd/YsG3aS2BFLlAcKqw2Yr+O9tt1LNNv2ZI+NsmzHr5NJrSrYW297uYfXAGREZpJlPImmAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T20:00:35.525482Z","bundle_sha256":"1c254733c753117ae6815d904f6c9b6779b39409d1de3fc0185779e0a1f5f104"}}