{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:KDFDX7MJ44EUKTOOYDESDWXU2T","short_pith_number":"pith:KDFDX7MJ","canonical_record":{"source":{"id":"0911.3688","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2009-11-19T02:09:46Z","cross_cats_sorted":[],"title_canon_sha256":"74a430e1d7f21b0eecb8e43e8d1e38b589e9916feea90803e68d946eba2a94ee","abstract_canon_sha256":"3a053c10e77ee9f8983d433bf8b07726064dd5f8e4719f0b1ec9bd5bf5296eb1"},"schema_version":"1.0"},"canonical_sha256":"50ca3bfd89e709454dcec0c921daf4d4c69d95b7bbf45519cbe02dbbb50cee27","source":{"kind":"arxiv","id":"0911.3688","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0911.3688","created_at":"2026-05-18T02:34:04Z"},{"alias_kind":"arxiv_version","alias_value":"0911.3688v2","created_at":"2026-05-18T02:34:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0911.3688","created_at":"2026-05-18T02:34:04Z"},{"alias_kind":"pith_short_12","alias_value":"KDFDX7MJ44EU","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"KDFDX7MJ44EUKTOO","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"KDFDX7MJ","created_at":"2026-05-18T12:26:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:KDFDX7MJ44EUKTOOYDESDWXU2T","target":"record","payload":{"canonical_record":{"source":{"id":"0911.3688","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2009-11-19T02:09:46Z","cross_cats_sorted":[],"title_canon_sha256":"74a430e1d7f21b0eecb8e43e8d1e38b589e9916feea90803e68d946eba2a94ee","abstract_canon_sha256":"3a053c10e77ee9f8983d433bf8b07726064dd5f8e4719f0b1ec9bd5bf5296eb1"},"schema_version":"1.0"},"canonical_sha256":"50ca3bfd89e709454dcec0c921daf4d4c69d95b7bbf45519cbe02dbbb50cee27","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:34:04.599234Z","signature_b64":"ATJsjFiFqbevr5EWStS9miJMiHZbtnjdHTTy3lED5NpN6fCUyqhcYsm5tLMW3PiBRxaZN9kkenQvRuC//XJYBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"50ca3bfd89e709454dcec0c921daf4d4c69d95b7bbf45519cbe02dbbb50cee27","last_reissued_at":"2026-05-18T02:34:04.598684Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:34:04.598684Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0911.3688","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:34:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ho6lwCQZgmRoAvnUDQsPDfgrN+EfJOHQmAcAZRnfgnDzNE77L5RFHMUywEFtcizzimjHKOysJOhNP6/3KttRAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T16:24:59.498729Z"},"content_sha256":"1c29a94e0b5a324fdd284cc74f01fbd9a844376a920a73aa1be5ab675a122832","schema_version":"1.0","event_id":"sha256:1c29a94e0b5a324fdd284cc74f01fbd9a844376a920a73aa1be5ab675a122832"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:KDFDX7MJ44EUKTOOYDESDWXU2T","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A minimal model of Lorentz gauge gravity with dynamical torsion","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"B.S. Park, D.G. Pak, Y.M. Cho","submitted_at":"2009-11-19T02:09:46Z","abstract_excerpt":"A new Lorentz gauge gravity model with R^2-type Lagrangian is proposed. In the absence of classical torsion the model admits a topological phase with an arbitrary metric. We analyze the equations of motion in constant curvature space-time background using the Lagrange formalism and demonstrate that the model possesses a minimal set of dynamic degrees of freedom for the torsion. Surprisingly, the number of torsion dynamic degrees of freedom equals the number of physical degrees of freedom for the metric tensor. An interesting feature of the model is that the spin two mode of torsion becomes dyn"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0911.3688","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:34:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xUjHBeqB/MK30AxrWaIo6Goqm5zYfb/PwwtO+5grjiuinRomr8xsHlzDfJ4wOPeuZh/jd9zrI7C03FSE7UvdCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T16:24:59.499444Z"},"content_sha256":"0bfc528e33cf883875dc80745339ad40d3dcf1c220e4f9482e0ad49320291eca","schema_version":"1.0","event_id":"sha256:0bfc528e33cf883875dc80745339ad40d3dcf1c220e4f9482e0ad49320291eca"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KDFDX7MJ44EUKTOOYDESDWXU2T/bundle.json","state_url":"https://pith.science/pith/KDFDX7MJ44EUKTOOYDESDWXU2T/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KDFDX7MJ44EUKTOOYDESDWXU2T/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":"2026-05-25T16:24:59Z","links":{"resolver":"https://pith.science/pith/KDFDX7MJ44EUKTOOYDESDWXU2T","bundle":"https://pith.science/pith/KDFDX7MJ44EUKTOOYDESDWXU2T/bundle.json","state":"https://pith.science/pith/KDFDX7MJ44EUKTOOYDESDWXU2T/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KDFDX7MJ44EUKTOOYDESDWXU2T/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:KDFDX7MJ44EUKTOOYDESDWXU2T","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":"3a053c10e77ee9f8983d433bf8b07726064dd5f8e4719f0b1ec9bd5bf5296eb1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2009-11-19T02:09:46Z","title_canon_sha256":"74a430e1d7f21b0eecb8e43e8d1e38b589e9916feea90803e68d946eba2a94ee"},"schema_version":"1.0","source":{"id":"0911.3688","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0911.3688","created_at":"2026-05-18T02:34:04Z"},{"alias_kind":"arxiv_version","alias_value":"0911.3688v2","created_at":"2026-05-18T02:34:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0911.3688","created_at":"2026-05-18T02:34:04Z"},{"alias_kind":"pith_short_12","alias_value":"KDFDX7MJ44EU","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"KDFDX7MJ44EUKTOO","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"KDFDX7MJ","created_at":"2026-05-18T12:26:00Z"}],"graph_snapshots":[{"event_id":"sha256:0bfc528e33cf883875dc80745339ad40d3dcf1c220e4f9482e0ad49320291eca","target":"graph","created_at":"2026-05-18T02:34:04Z","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":"A new Lorentz gauge gravity model with R^2-type Lagrangian is proposed. In the absence of classical torsion the model admits a topological phase with an arbitrary metric. We analyze the equations of motion in constant curvature space-time background using the Lagrange formalism and demonstrate that the model possesses a minimal set of dynamic degrees of freedom for the torsion. Surprisingly, the number of torsion dynamic degrees of freedom equals the number of physical degrees of freedom for the metric tensor. An interesting feature of the model is that the spin two mode of torsion becomes dyn","authors_text":"B.S. Park, D.G. Pak, Y.M. Cho","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2009-11-19T02:09:46Z","title":"A minimal model of Lorentz gauge gravity with dynamical torsion"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0911.3688","kind":"arxiv","version":2},"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":"sha256:1c29a94e0b5a324fdd284cc74f01fbd9a844376a920a73aa1be5ab675a122832","target":"record","created_at":"2026-05-18T02:34:04Z","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":"3a053c10e77ee9f8983d433bf8b07726064dd5f8e4719f0b1ec9bd5bf5296eb1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2009-11-19T02:09:46Z","title_canon_sha256":"74a430e1d7f21b0eecb8e43e8d1e38b589e9916feea90803e68d946eba2a94ee"},"schema_version":"1.0","source":{"id":"0911.3688","kind":"arxiv","version":2}},"canonical_sha256":"50ca3bfd89e709454dcec0c921daf4d4c69d95b7bbf45519cbe02dbbb50cee27","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"50ca3bfd89e709454dcec0c921daf4d4c69d95b7bbf45519cbe02dbbb50cee27","first_computed_at":"2026-05-18T02:34:04.598684Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:34:04.598684Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ATJsjFiFqbevr5EWStS9miJMiHZbtnjdHTTy3lED5NpN6fCUyqhcYsm5tLMW3PiBRxaZN9kkenQvRuC//XJYBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:34:04.599234Z","signed_message":"canonical_sha256_bytes"},"source_id":"0911.3688","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1c29a94e0b5a324fdd284cc74f01fbd9a844376a920a73aa1be5ab675a122832","sha256:0bfc528e33cf883875dc80745339ad40d3dcf1c220e4f9482e0ad49320291eca"],"state_sha256":"0fbae9def4f9c88523827c01875b4ab8b448b6b39450dca6d1300987cad6d36f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g5aSAFdg+lIyphnRBrRQyevhLhS8sJe2thVcNmbsOZ6BIouojVQMJ/nIuxvWgGS1vCS8dNoSgp+YMVN20W6tDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T16:24:59.503241Z","bundle_sha256":"6c5a1465d17eb4656aeefdfd8117d8b62c7da15f56147c809c55f351f90cf872"}}