{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:77G2HLPLQNHOPSBVDZCFZPFCIB","short_pith_number":"pith:77G2HLPL","canonical_record":{"source":{"id":"1409.5742","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2014-09-08T21:43:15Z","cross_cats_sorted":[],"title_canon_sha256":"a52fd1ea97a7f617381af234cac03762e63a50eedd3c4623bfa1af2b5e3e1bc4","abstract_canon_sha256":"73a7d39786add17b4d2254ef472fea7843e7b38d8d8853bf1be0d558e9955c88"},"schema_version":"1.0"},"canonical_sha256":"ffcda3adeb834ee7c8351e445cbca24047b2fc2c4e456e900c68442e7f72f006","source":{"kind":"arxiv","id":"1409.5742","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.5742","created_at":"2026-05-18T02:42:26Z"},{"alias_kind":"arxiv_version","alias_value":"1409.5742v1","created_at":"2026-05-18T02:42:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.5742","created_at":"2026-05-18T02:42:26Z"},{"alias_kind":"pith_short_12","alias_value":"77G2HLPLQNHO","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_16","alias_value":"77G2HLPLQNHOPSBV","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_8","alias_value":"77G2HLPL","created_at":"2026-05-18T12:28:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:77G2HLPLQNHOPSBVDZCFZPFCIB","target":"record","payload":{"canonical_record":{"source":{"id":"1409.5742","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2014-09-08T21:43:15Z","cross_cats_sorted":[],"title_canon_sha256":"a52fd1ea97a7f617381af234cac03762e63a50eedd3c4623bfa1af2b5e3e1bc4","abstract_canon_sha256":"73a7d39786add17b4d2254ef472fea7843e7b38d8d8853bf1be0d558e9955c88"},"schema_version":"1.0"},"canonical_sha256":"ffcda3adeb834ee7c8351e445cbca24047b2fc2c4e456e900c68442e7f72f006","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:42:26.435098Z","signature_b64":"WJG9cyX3cga9IaSyPg2oIVvVaT5T89Vie7IhLdgqxS7Zqa1M2EWt84o615lexAiB/bbpyKg6lo/SZkLr08+RCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ffcda3adeb834ee7c8351e445cbca24047b2fc2c4e456e900c68442e7f72f006","last_reissued_at":"2026-05-18T02:42:26.434323Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:42:26.434323Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1409.5742","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":"2026-05-18T02:42:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3NTImIp6VmJ+NqzshmLRcym1T9EERE01W4eJV99HDHMpBDsdHIEyGrwNRn8XJ1/DC+/oJzeZ7if78IdbY/EkCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T02:55:23.310341Z"},"content_sha256":"0c1a05ad93c5ed12b0d48f3ffff89d36d3416d75b64086b018e0a36a3e3bc64e","schema_version":"1.0","event_id":"sha256:0c1a05ad93c5ed12b0d48f3ffff89d36d3416d75b64086b018e0a36a3e3bc64e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:77G2HLPLQNHOPSBVDZCFZPFCIB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Lorentz violation and higher-derivative gravity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-th","authors_text":"C. Hernaski, H. Belich","submitted_at":"2014-09-08T21:43:15Z","abstract_excerpt":"In this work, we analyze a gravity model with higher derivatives including a CPT-even Lorentz-violating term. In principle, the model could be a low-energy limit of a Lorentz-invariant theory presenting the violation of Lorentz symmetry as a consequence of a spontaneous symmetry-breaking mechanism if a decoupling between the metric and the Nambu-Goldstone modes is assumed. We have set up a convenient operator basis for the expansion of wave operators for symmetric second-rank tensors in the presence of a background vector. By using this set of operators, the particle content is obtained, and i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.5742","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":"2026-05-18T02:42:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fJExG3P8/1aWgoxF7tiSktKmj7cfuCS8TKOUsDxiCc90iT3zU97KhuyKdHZMhk/kpRZjv2Y49C5TabgZ51wZCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T02:55:23.311052Z"},"content_sha256":"ac888c69e0b11620ebeb50ec4dd72dea1b7172296d0908a184142e3ca4d0505f","schema_version":"1.0","event_id":"sha256:ac888c69e0b11620ebeb50ec4dd72dea1b7172296d0908a184142e3ca4d0505f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/77G2HLPLQNHOPSBVDZCFZPFCIB/bundle.json","state_url":"https://pith.science/pith/77G2HLPLQNHOPSBVDZCFZPFCIB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/77G2HLPLQNHOPSBVDZCFZPFCIB/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":"2026-06-08T02:55:23Z","links":{"resolver":"https://pith.science/pith/77G2HLPLQNHOPSBVDZCFZPFCIB","bundle":"https://pith.science/pith/77G2HLPLQNHOPSBVDZCFZPFCIB/bundle.json","state":"https://pith.science/pith/77G2HLPLQNHOPSBVDZCFZPFCIB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/77G2HLPLQNHOPSBVDZCFZPFCIB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:77G2HLPLQNHOPSBVDZCFZPFCIB","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":"73a7d39786add17b4d2254ef472fea7843e7b38d8d8853bf1be0d558e9955c88","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2014-09-08T21:43:15Z","title_canon_sha256":"a52fd1ea97a7f617381af234cac03762e63a50eedd3c4623bfa1af2b5e3e1bc4"},"schema_version":"1.0","source":{"id":"1409.5742","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.5742","created_at":"2026-05-18T02:42:26Z"},{"alias_kind":"arxiv_version","alias_value":"1409.5742v1","created_at":"2026-05-18T02:42:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.5742","created_at":"2026-05-18T02:42:26Z"},{"alias_kind":"pith_short_12","alias_value":"77G2HLPLQNHO","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_16","alias_value":"77G2HLPLQNHOPSBV","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_8","alias_value":"77G2HLPL","created_at":"2026-05-18T12:28:16Z"}],"graph_snapshots":[{"event_id":"sha256:ac888c69e0b11620ebeb50ec4dd72dea1b7172296d0908a184142e3ca4d0505f","target":"graph","created_at":"2026-05-18T02:42:26Z","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":"In this work, we analyze a gravity model with higher derivatives including a CPT-even Lorentz-violating term. In principle, the model could be a low-energy limit of a Lorentz-invariant theory presenting the violation of Lorentz symmetry as a consequence of a spontaneous symmetry-breaking mechanism if a decoupling between the metric and the Nambu-Goldstone modes is assumed. We have set up a convenient operator basis for the expansion of wave operators for symmetric second-rank tensors in the presence of a background vector. By using this set of operators, the particle content is obtained, and i","authors_text":"C. Hernaski, H. Belich","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2014-09-08T21:43:15Z","title":"Lorentz violation and higher-derivative gravity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.5742","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":"sha256:0c1a05ad93c5ed12b0d48f3ffff89d36d3416d75b64086b018e0a36a3e3bc64e","target":"record","created_at":"2026-05-18T02:42:26Z","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":"73a7d39786add17b4d2254ef472fea7843e7b38d8d8853bf1be0d558e9955c88","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2014-09-08T21:43:15Z","title_canon_sha256":"a52fd1ea97a7f617381af234cac03762e63a50eedd3c4623bfa1af2b5e3e1bc4"},"schema_version":"1.0","source":{"id":"1409.5742","kind":"arxiv","version":1}},"canonical_sha256":"ffcda3adeb834ee7c8351e445cbca24047b2fc2c4e456e900c68442e7f72f006","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ffcda3adeb834ee7c8351e445cbca24047b2fc2c4e456e900c68442e7f72f006","first_computed_at":"2026-05-18T02:42:26.434323Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:42:26.434323Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WJG9cyX3cga9IaSyPg2oIVvVaT5T89Vie7IhLdgqxS7Zqa1M2EWt84o615lexAiB/bbpyKg6lo/SZkLr08+RCg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:42:26.435098Z","signed_message":"canonical_sha256_bytes"},"source_id":"1409.5742","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0c1a05ad93c5ed12b0d48f3ffff89d36d3416d75b64086b018e0a36a3e3bc64e","sha256:ac888c69e0b11620ebeb50ec4dd72dea1b7172296d0908a184142e3ca4d0505f"],"state_sha256":"1e8400593c0250caa875acd14ae979b661e955028f691b6b2532e37ba90c4751"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RQruScizNI1Qxo+4x/AJfyx3zjc0kTpkNaMK+xtGRyv0Id9LFOb+6BhOGS0QP8IPA98PNQZeEj7AaoRTFGfqAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T02:55:23.315381Z","bundle_sha256":"ec6518c9ab1b812bcadba01d3f35ca39fcacdd06fb244f729a1efbb03a79ec0c"}}