{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:DSJSZCHPJOKSDO5XJ5HSODLJYE","short_pith_number":"pith:DSJSZCHP","canonical_record":{"source":{"id":"1905.00438","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2019-05-01T18:01:06Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"6478611deef929fdf5d82d5a8323334101a28e02cfa67c6cb2cca48b9d51e1d0","abstract_canon_sha256":"c85fd4377c72b133dcc1bf21a1e8e41a3d01e58aa1a4b158d2d927a2602d60c8"},"schema_version":"1.0"},"canonical_sha256":"1c932c88ef4b9521bbb74f4f270d69c13b12bab21004578a6702aade4a88d415","source":{"kind":"arxiv","id":"1905.00438","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.00438","created_at":"2026-05-17T23:40:17Z"},{"alias_kind":"arxiv_version","alias_value":"1905.00438v3","created_at":"2026-05-17T23:40:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.00438","created_at":"2026-05-17T23:40:17Z"},{"alias_kind":"pith_short_12","alias_value":"DSJSZCHPJOKS","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"DSJSZCHPJOKSDO5X","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"DSJSZCHP","created_at":"2026-05-18T12:33:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:DSJSZCHPJOKSDO5XJ5HSODLJYE","target":"record","payload":{"canonical_record":{"source":{"id":"1905.00438","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2019-05-01T18:01:06Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"6478611deef929fdf5d82d5a8323334101a28e02cfa67c6cb2cca48b9d51e1d0","abstract_canon_sha256":"c85fd4377c72b133dcc1bf21a1e8e41a3d01e58aa1a4b158d2d927a2602d60c8"},"schema_version":"1.0"},"canonical_sha256":"1c932c88ef4b9521bbb74f4f270d69c13b12bab21004578a6702aade4a88d415","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:40:17.194020Z","signature_b64":"zA8nkhnc/jImxE6qaIrlnr2ahNYfc5QcVMFzQ/UM7XDot0pRxEpf2LGt+QnmyyFboVNeE4ETYzbMEtwoQNd/Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1c932c88ef4b9521bbb74f4f270d69c13b12bab21004578a6702aade4a88d415","last_reissued_at":"2026-05-17T23:40:17.193344Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:40:17.193344Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.00438","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:40:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2FK1mHrqNRvz8KkK3Rsjjm0qLcHhi1YZkCXO5kUwNmiWOcOppdplppJUleWnR2ajSgfY4Esnw+/T8gGAEN/oBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T16:58:43.399956Z"},"content_sha256":"9034f6f6e7da8e50b40380786d78daa3a1679664fcf4b1fd5dca3d745a5ded62","schema_version":"1.0","event_id":"sha256:9034f6f6e7da8e50b40380786d78daa3a1679664fcf4b1fd5dca3d745a5ded62"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:DSJSZCHPJOKSDO5XJ5HSODLJYE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Unitary Extension of Exotic Massive 3D Gravity from Bi-gravity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"hep-th","authors_text":"Mehmet Ozkan, Utku Zorba, Yi Pang","submitted_at":"2019-05-01T18:01:06Z","abstract_excerpt":"We obtain a new 3D gravity model from two copies of parity-odd Einstein-Cartan theories. Using Hamiltonian analysis, we demonstrate that the only local degrees of freedom are two massive spin-2 modes. Unitarity of the model in anti-de Sitter and Minkowski backgrounds can be satisfied for vast choices of the parameters without fine-tuning. The recent \"exotic massive 3D gravity\" model arises as a limiting case of the new model. We also show that there exist trajectories on the parameter space of the new model which cross the boundary between unitary and non-unitary regions. At the crossing point"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.00438","kind":"arxiv","version":3},"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":"2026-05-17T23:40:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xM506xGsc3EhcEvAk5iPyJjkXicH2wmkzjETJj9awqfMzQYu3EakroPqcpqPCVgfEQ6JsEKUC8R6vH6H2Z96AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T16:58:43.400300Z"},"content_sha256":"024bdf7d8c76bed1e395e1a06b1f495a62fc5f1251b3476d22b37759d2d97aee","schema_version":"1.0","event_id":"sha256:024bdf7d8c76bed1e395e1a06b1f495a62fc5f1251b3476d22b37759d2d97aee"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DSJSZCHPJOKSDO5XJ5HSODLJYE/bundle.json","state_url":"https://pith.science/pith/DSJSZCHPJOKSDO5XJ5HSODLJYE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DSJSZCHPJOKSDO5XJ5HSODLJYE/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":"2026-06-01T16:58:43Z","links":{"resolver":"https://pith.science/pith/DSJSZCHPJOKSDO5XJ5HSODLJYE","bundle":"https://pith.science/pith/DSJSZCHPJOKSDO5XJ5HSODLJYE/bundle.json","state":"https://pith.science/pith/DSJSZCHPJOKSDO5XJ5HSODLJYE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DSJSZCHPJOKSDO5XJ5HSODLJYE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:DSJSZCHPJOKSDO5XJ5HSODLJYE","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":"c85fd4377c72b133dcc1bf21a1e8e41a3d01e58aa1a4b158d2d927a2602d60c8","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2019-05-01T18:01:06Z","title_canon_sha256":"6478611deef929fdf5d82d5a8323334101a28e02cfa67c6cb2cca48b9d51e1d0"},"schema_version":"1.0","source":{"id":"1905.00438","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.00438","created_at":"2026-05-17T23:40:17Z"},{"alias_kind":"arxiv_version","alias_value":"1905.00438v3","created_at":"2026-05-17T23:40:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.00438","created_at":"2026-05-17T23:40:17Z"},{"alias_kind":"pith_short_12","alias_value":"DSJSZCHPJOKS","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"DSJSZCHPJOKSDO5X","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"DSJSZCHP","created_at":"2026-05-18T12:33:15Z"}],"graph_snapshots":[{"event_id":"sha256:024bdf7d8c76bed1e395e1a06b1f495a62fc5f1251b3476d22b37759d2d97aee","target":"graph","created_at":"2026-05-17T23:40:17Z","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":"We obtain a new 3D gravity model from two copies of parity-odd Einstein-Cartan theories. Using Hamiltonian analysis, we demonstrate that the only local degrees of freedom are two massive spin-2 modes. Unitarity of the model in anti-de Sitter and Minkowski backgrounds can be satisfied for vast choices of the parameters without fine-tuning. The recent \"exotic massive 3D gravity\" model arises as a limiting case of the new model. We also show that there exist trajectories on the parameter space of the new model which cross the boundary between unitary and non-unitary regions. At the crossing point","authors_text":"Mehmet Ozkan, Utku Zorba, Yi Pang","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2019-05-01T18:01:06Z","title":"Unitary Extension of Exotic Massive 3D Gravity from Bi-gravity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.00438","kind":"arxiv","version":3},"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":"sha256:9034f6f6e7da8e50b40380786d78daa3a1679664fcf4b1fd5dca3d745a5ded62","target":"record","created_at":"2026-05-17T23:40:17Z","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":"c85fd4377c72b133dcc1bf21a1e8e41a3d01e58aa1a4b158d2d927a2602d60c8","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2019-05-01T18:01:06Z","title_canon_sha256":"6478611deef929fdf5d82d5a8323334101a28e02cfa67c6cb2cca48b9d51e1d0"},"schema_version":"1.0","source":{"id":"1905.00438","kind":"arxiv","version":3}},"canonical_sha256":"1c932c88ef4b9521bbb74f4f270d69c13b12bab21004578a6702aade4a88d415","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1c932c88ef4b9521bbb74f4f270d69c13b12bab21004578a6702aade4a88d415","first_computed_at":"2026-05-17T23:40:17.193344Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:40:17.193344Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zA8nkhnc/jImxE6qaIrlnr2ahNYfc5QcVMFzQ/UM7XDot0pRxEpf2LGt+QnmyyFboVNeE4ETYzbMEtwoQNd/Dw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:40:17.194020Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.00438","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9034f6f6e7da8e50b40380786d78daa3a1679664fcf4b1fd5dca3d745a5ded62","sha256:024bdf7d8c76bed1e395e1a06b1f495a62fc5f1251b3476d22b37759d2d97aee"],"state_sha256":"f5156a27c71d87956e60a44bc4c807191de05389aed983c72482011685f499b2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XNbqTj4jumLnS2CdWa4yF55CCV7eGUu44miCTEv+gTN2FxlXkD4oQTTlmc9N43tmR8NiEQXzi9KizJ5Ra7BDCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T16:58:43.402213Z","bundle_sha256":"7e537464dc35fad9eb4ad68cccca21dd5cfc4ba12af48b08b241abc59e616f3b"}}