{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:LFOS7O2W27CQXSXPPOCSZ24YSZ","short_pith_number":"pith:LFOS7O2W","canonical_record":{"source":{"id":"2207.03307","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2022-07-07T14:10:41Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"1f52dae1e20bfb89770b319cfb7c16ad21b6671b908b2e6803ee87195ab7c76f","abstract_canon_sha256":"fe0a1e3fd99fa561d9a96770a255e18af66be6df01bc1fad4cb87e7c551003c8"},"schema_version":"1.0"},"canonical_sha256":"595d2fbb56d7c50bcaef7b852ceb989640c888f760acb6d8460a7f5573c661f1","source":{"kind":"arxiv","id":"2207.03307","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.03307","created_at":"2026-07-05T06:09:43Z"},{"alias_kind":"arxiv_version","alias_value":"2207.03307v2","created_at":"2026-07-05T06:09:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.03307","created_at":"2026-07-05T06:09:43Z"},{"alias_kind":"pith_short_12","alias_value":"LFOS7O2W27CQ","created_at":"2026-07-05T06:09:43Z"},{"alias_kind":"pith_short_16","alias_value":"LFOS7O2W27CQXSXP","created_at":"2026-07-05T06:09:43Z"},{"alias_kind":"pith_short_8","alias_value":"LFOS7O2W","created_at":"2026-07-05T06:09:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:LFOS7O2W27CQXSXPPOCSZ24YSZ","target":"record","payload":{"canonical_record":{"source":{"id":"2207.03307","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2022-07-07T14:10:41Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"1f52dae1e20bfb89770b319cfb7c16ad21b6671b908b2e6803ee87195ab7c76f","abstract_canon_sha256":"fe0a1e3fd99fa561d9a96770a255e18af66be6df01bc1fad4cb87e7c551003c8"},"schema_version":"1.0"},"canonical_sha256":"595d2fbb56d7c50bcaef7b852ceb989640c888f760acb6d8460a7f5573c661f1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:09:43.461899Z","signature_b64":"X/nG4WyJREJ4aZEYgYXbG2hbATX8DTTL3qwolMwYNLnGo3egrfwBiWWnlu9dY2xQxYfCxRVik0vb51L9J7SyBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"595d2fbb56d7c50bcaef7b852ceb989640c888f760acb6d8460a7f5573c661f1","last_reissued_at":"2026-07-05T06:09:43.461516Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:09:43.461516Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2207.03307","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":"2026-07-05T06:09:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QZubovTJw/NfnPcCxZn64KY/K0iEpeX6QKyTUGfdYR2Boz2XTyUUjN7P5izrYizLaiBdvBh8Ay5jqcM3kQZNCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T18:39:54.189813Z"},"content_sha256":"2b8fbaa167da883ac1dccfebb47634467a5443f5bc44f0ac6e7950d64b3e1903","schema_version":"1.0","event_id":"sha256:2b8fbaa167da883ac1dccfebb47634467a5443f5bc44f0ac6e7950d64b3e1903"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:LFOS7O2W27CQXSXPPOCSZ24YSZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Towards effective actions for the continuum limit of spin foams","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th"],"primary_cat":"gr-qc","authors_text":"Bianca Dittrich, Johanna N. Borissova","submitted_at":"2022-07-07T14:10:41Z","abstract_excerpt":"Spin foams arise from a quantization of classical gravity expressed via the Plebanski action. Key open questions related to the continuum limit of spin foams are whether general relativity is reproduced and what type of corrections could emerge. As a central component for spin foam dynamics, recent results on the continuum limit of the Area Regge action suggest a close relation with actions for area metrics instead of a length metric. Inspired by these results, within the framework of modified Plebanski theory we construct a family of candidate actions for area metrics. These actions are expec"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.03307","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2207.03307/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T06:09:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gk00oSPLLZBxi0p6W/8qrEw6XtvtQbIMovHpWUH0z5BgEinWrwameO7m0jWIHBQo0ohlYaF3gOJ8GG44gRldDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T18:39:54.190373Z"},"content_sha256":"33dd7d075e8551f29ad8fcdbcb78a2ae61660d7335c3622f9ce3a4eb80962ac1","schema_version":"1.0","event_id":"sha256:33dd7d075e8551f29ad8fcdbcb78a2ae61660d7335c3622f9ce3a4eb80962ac1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LFOS7O2W27CQXSXPPOCSZ24YSZ/bundle.json","state_url":"https://pith.science/pith/LFOS7O2W27CQXSXPPOCSZ24YSZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LFOS7O2W27CQXSXPPOCSZ24YSZ/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":"2026-08-07T18:39:54Z","links":{"resolver":"https://pith.science/pith/LFOS7O2W27CQXSXPPOCSZ24YSZ","bundle":"https://pith.science/pith/LFOS7O2W27CQXSXPPOCSZ24YSZ/bundle.json","state":"https://pith.science/pith/LFOS7O2W27CQXSXPPOCSZ24YSZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LFOS7O2W27CQXSXPPOCSZ24YSZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:LFOS7O2W27CQXSXPPOCSZ24YSZ","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":"fe0a1e3fd99fa561d9a96770a255e18af66be6df01bc1fad4cb87e7c551003c8","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2022-07-07T14:10:41Z","title_canon_sha256":"1f52dae1e20bfb89770b319cfb7c16ad21b6671b908b2e6803ee87195ab7c76f"},"schema_version":"1.0","source":{"id":"2207.03307","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.03307","created_at":"2026-07-05T06:09:43Z"},{"alias_kind":"arxiv_version","alias_value":"2207.03307v2","created_at":"2026-07-05T06:09:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.03307","created_at":"2026-07-05T06:09:43Z"},{"alias_kind":"pith_short_12","alias_value":"LFOS7O2W27CQ","created_at":"2026-07-05T06:09:43Z"},{"alias_kind":"pith_short_16","alias_value":"LFOS7O2W27CQXSXP","created_at":"2026-07-05T06:09:43Z"},{"alias_kind":"pith_short_8","alias_value":"LFOS7O2W","created_at":"2026-07-05T06:09:43Z"}],"graph_snapshots":[{"event_id":"sha256:33dd7d075e8551f29ad8fcdbcb78a2ae61660d7335c3622f9ce3a4eb80962ac1","target":"graph","created_at":"2026-07-05T06:09:43Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2207.03307/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Spin foams arise from a quantization of classical gravity expressed via the Plebanski action. Key open questions related to the continuum limit of spin foams are whether general relativity is reproduced and what type of corrections could emerge. As a central component for spin foam dynamics, recent results on the continuum limit of the Area Regge action suggest a close relation with actions for area metrics instead of a length metric. Inspired by these results, within the framework of modified Plebanski theory we construct a family of candidate actions for area metrics. These actions are expec","authors_text":"Bianca Dittrich, Johanna N. Borissova","cross_cats":["hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2022-07-07T14:10:41Z","title":"Towards effective actions for the continuum limit of spin foams"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.03307","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":"sha256:2b8fbaa167da883ac1dccfebb47634467a5443f5bc44f0ac6e7950d64b3e1903","target":"record","created_at":"2026-07-05T06:09:43Z","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":"fe0a1e3fd99fa561d9a96770a255e18af66be6df01bc1fad4cb87e7c551003c8","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2022-07-07T14:10:41Z","title_canon_sha256":"1f52dae1e20bfb89770b319cfb7c16ad21b6671b908b2e6803ee87195ab7c76f"},"schema_version":"1.0","source":{"id":"2207.03307","kind":"arxiv","version":2}},"canonical_sha256":"595d2fbb56d7c50bcaef7b852ceb989640c888f760acb6d8460a7f5573c661f1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"595d2fbb56d7c50bcaef7b852ceb989640c888f760acb6d8460a7f5573c661f1","first_computed_at":"2026-07-05T06:09:43.461516Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:09:43.461516Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"X/nG4WyJREJ4aZEYgYXbG2hbATX8DTTL3qwolMwYNLnGo3egrfwBiWWnlu9dY2xQxYfCxRVik0vb51L9J7SyBw==","signature_status":"signed_v1","signed_at":"2026-07-05T06:09:43.461899Z","signed_message":"canonical_sha256_bytes"},"source_id":"2207.03307","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2b8fbaa167da883ac1dccfebb47634467a5443f5bc44f0ac6e7950d64b3e1903","sha256:33dd7d075e8551f29ad8fcdbcb78a2ae61660d7335c3622f9ce3a4eb80962ac1"],"state_sha256":"cde675196090e21b0906b0b78e38bb22a208aac775ad2b87328485833882e102"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4pha7lYThEYRdNbcxYIEiD/9neBNo8bhbnycv9n2Fz8OXQCN7bMKuaMvja+Iw0MWKLmeNV9bLow6uZtWEfpNBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T18:39:54.194218Z","bundle_sha256":"30d8029e7f633c1ba3f6537e1241426ff9c831e2aaa00aad080c7df4a3a749fc"}}