{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:ENFFUOPAEC6BD7Z7M22Y7QIYSN","short_pith_number":"pith:ENFFUOPA","canonical_record":{"source":{"id":"1805.07419","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-05-18T19:49:16Z","cross_cats_sorted":["astro-ph.CO","hep-th"],"title_canon_sha256":"36f27696e548000afaadda05279f3dca9b15f0b98387155d2e855693e00776d6","abstract_canon_sha256":"c0c8a2682e754b8cc115e70b5efe2ddc3e97b2a2b7a710e3e3eae1eaf3c20c49"},"schema_version":"1.0"},"canonical_sha256":"234a5a39e020bc11ff3f66b58fc118936fa993b033ebf8bd0668ade8d42628c1","source":{"kind":"arxiv","id":"1805.07419","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.07419","created_at":"2026-05-18T00:10:10Z"},{"alias_kind":"arxiv_version","alias_value":"1805.07419v2","created_at":"2026-05-18T00:10:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.07419","created_at":"2026-05-18T00:10:10Z"},{"alias_kind":"pith_short_12","alias_value":"ENFFUOPAEC6B","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_16","alias_value":"ENFFUOPAEC6BD7Z7","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_8","alias_value":"ENFFUOPA","created_at":"2026-05-18T12:32:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:ENFFUOPAEC6BD7Z7M22Y7QIYSN","target":"record","payload":{"canonical_record":{"source":{"id":"1805.07419","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-05-18T19:49:16Z","cross_cats_sorted":["astro-ph.CO","hep-th"],"title_canon_sha256":"36f27696e548000afaadda05279f3dca9b15f0b98387155d2e855693e00776d6","abstract_canon_sha256":"c0c8a2682e754b8cc115e70b5efe2ddc3e97b2a2b7a710e3e3eae1eaf3c20c49"},"schema_version":"1.0"},"canonical_sha256":"234a5a39e020bc11ff3f66b58fc118936fa993b033ebf8bd0668ade8d42628c1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:10:10.167511Z","signature_b64":"Xvs1QpZydutzxTTv6NOTmf4HvYCcRbUn09d3pcjR7HXXv0uVgkbbD0DrOXpUn+qXQbSZhXIcQGj4fnf0nD2zCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"234a5a39e020bc11ff3f66b58fc118936fa993b033ebf8bd0668ade8d42628c1","last_reissued_at":"2026-05-18T00:10:10.166868Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:10:10.166868Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.07419","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":"2026-05-18T00:10:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wsce8A9D34+AxPOPg+id9gZ/d7n/WfZBmnAcFksoTF5W0knuRL75s/GFfeuFrRBpHjVodwpL145vaejqcFGeDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T20:59:32.358528Z"},"content_sha256":"ade91f0d9d07bf9000d407d873fe576b27098958ecf4f98b9adc787eccf66dbf","schema_version":"1.0","event_id":"sha256:ade91f0d9d07bf9000d407d873fe576b27098958ecf4f98b9adc787eccf66dbf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:ENFFUOPAEC6BD7Z7M22Y7QIYSN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Palatini formulation of $f(R,T)$ gravity theory, and its cosmological implications","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","hep-th"],"primary_cat":"gr-qc","authors_text":"Guangjie Li, JiMin Wu, Shi-Dong Liang, Tiberiu Harko","submitted_at":"2018-05-18T19:49:16Z","abstract_excerpt":"We consider the Palatini formulation of $f(R,T)$ gravity theory, in which a nonminimal coupling between the Ricci scalar and the trace of the energy-momentum tensor is introduced, by considering the metric and the affine connection as independent field variables. The field equations and the equations of motion for massive test particles are derived, and we show that the independent connection can be expressed as the Levi-Civita connection of an auxiliary, energy-momentum trace dependent metric, related to the physical metric by a conformal transformation. Similarly to the metric case, the fiel"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.07419","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":"2026-05-18T00:10:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Vo/KNBO5SbBpwUdGc5ix4o4U+h+mMC8no2XddAzA3s5LVlI+KbTIRWyoedO5KRLPmSwqlNRqCcoXu3+5Fd2eCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T20:59:32.358875Z"},"content_sha256":"514c35e3fa9d429060a3c4f07d31316c94361e411937c8888738cb8dc4d79ade","schema_version":"1.0","event_id":"sha256:514c35e3fa9d429060a3c4f07d31316c94361e411937c8888738cb8dc4d79ade"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ENFFUOPAEC6BD7Z7M22Y7QIYSN/bundle.json","state_url":"https://pith.science/pith/ENFFUOPAEC6BD7Z7M22Y7QIYSN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ENFFUOPAEC6BD7Z7M22Y7QIYSN/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":"2026-06-03T20:59:32Z","links":{"resolver":"https://pith.science/pith/ENFFUOPAEC6BD7Z7M22Y7QIYSN","bundle":"https://pith.science/pith/ENFFUOPAEC6BD7Z7M22Y7QIYSN/bundle.json","state":"https://pith.science/pith/ENFFUOPAEC6BD7Z7M22Y7QIYSN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ENFFUOPAEC6BD7Z7M22Y7QIYSN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:ENFFUOPAEC6BD7Z7M22Y7QIYSN","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":"c0c8a2682e754b8cc115e70b5efe2ddc3e97b2a2b7a710e3e3eae1eaf3c20c49","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-05-18T19:49:16Z","title_canon_sha256":"36f27696e548000afaadda05279f3dca9b15f0b98387155d2e855693e00776d6"},"schema_version":"1.0","source":{"id":"1805.07419","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.07419","created_at":"2026-05-18T00:10:10Z"},{"alias_kind":"arxiv_version","alias_value":"1805.07419v2","created_at":"2026-05-18T00:10:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.07419","created_at":"2026-05-18T00:10:10Z"},{"alias_kind":"pith_short_12","alias_value":"ENFFUOPAEC6B","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_16","alias_value":"ENFFUOPAEC6BD7Z7","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_8","alias_value":"ENFFUOPA","created_at":"2026-05-18T12:32:22Z"}],"graph_snapshots":[{"event_id":"sha256:514c35e3fa9d429060a3c4f07d31316c94361e411937c8888738cb8dc4d79ade","target":"graph","created_at":"2026-05-18T00:10:10Z","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 consider the Palatini formulation of $f(R,T)$ gravity theory, in which a nonminimal coupling between the Ricci scalar and the trace of the energy-momentum tensor is introduced, by considering the metric and the affine connection as independent field variables. The field equations and the equations of motion for massive test particles are derived, and we show that the independent connection can be expressed as the Levi-Civita connection of an auxiliary, energy-momentum trace dependent metric, related to the physical metric by a conformal transformation. Similarly to the metric case, the fiel","authors_text":"Guangjie Li, JiMin Wu, Shi-Dong Liang, Tiberiu Harko","cross_cats":["astro-ph.CO","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-05-18T19:49:16Z","title":"Palatini formulation of $f(R,T)$ gravity theory, and its cosmological implications"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.07419","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:ade91f0d9d07bf9000d407d873fe576b27098958ecf4f98b9adc787eccf66dbf","target":"record","created_at":"2026-05-18T00:10:10Z","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":"c0c8a2682e754b8cc115e70b5efe2ddc3e97b2a2b7a710e3e3eae1eaf3c20c49","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-05-18T19:49:16Z","title_canon_sha256":"36f27696e548000afaadda05279f3dca9b15f0b98387155d2e855693e00776d6"},"schema_version":"1.0","source":{"id":"1805.07419","kind":"arxiv","version":2}},"canonical_sha256":"234a5a39e020bc11ff3f66b58fc118936fa993b033ebf8bd0668ade8d42628c1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"234a5a39e020bc11ff3f66b58fc118936fa993b033ebf8bd0668ade8d42628c1","first_computed_at":"2026-05-18T00:10:10.166868Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:10:10.166868Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Xvs1QpZydutzxTTv6NOTmf4HvYCcRbUn09d3pcjR7HXXv0uVgkbbD0DrOXpUn+qXQbSZhXIcQGj4fnf0nD2zCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:10:10.167511Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.07419","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ade91f0d9d07bf9000d407d873fe576b27098958ecf4f98b9adc787eccf66dbf","sha256:514c35e3fa9d429060a3c4f07d31316c94361e411937c8888738cb8dc4d79ade"],"state_sha256":"eb7f57d5844eb2d07f7f55075b09c32a3c71c0c24e39379912c410b780f4555c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cBHQltpgp81A4Zg78syyo//o6Asduos7HuiE9hgVE9REGledpWKrCRY5x6Dd4QEdGF/l2w0Cy+9zfdFS1zadCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T20:59:32.360866Z","bundle_sha256":"bda6525f7aff4ff42885ac123cb97ac51d1dacb0b08e7d800384d1261367de49"}}