{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:RXR32X7ILRQ3JGZNJP2MEUI3OR","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":"d3dc1a15ced8eb75a752a29ea735463417338d3c4155f5fb7a4bd0fd0b0e34b3","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2022-05-25T07:42:24Z","title_canon_sha256":"12620d2ec0a5bd6b757a0d4be53e9a52aef8b551883c6de634d7bcf06e52f226"},"schema_version":"1.0","source":{"id":"2205.12545","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2205.12545","created_at":"2026-07-05T04:53:42Z"},{"alias_kind":"arxiv_version","alias_value":"2205.12545v3","created_at":"2026-07-05T04:53:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2205.12545","created_at":"2026-07-05T04:53:42Z"},{"alias_kind":"pith_short_12","alias_value":"RXR32X7ILRQ3","created_at":"2026-07-05T04:53:42Z"},{"alias_kind":"pith_short_16","alias_value":"RXR32X7ILRQ3JGZN","created_at":"2026-07-05T04:53:42Z"},{"alias_kind":"pith_short_8","alias_value":"RXR32X7I","created_at":"2026-07-05T04:53:42Z"}],"graph_snapshots":[{"event_id":"sha256:fe33017745fc2786286dcb6f6599037d10daf7acfdd74505d24aac487eaf2b44","target":"graph","created_at":"2026-07-05T04:53:42Z","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/2205.12545/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We explore the possibility of gravitationally generated particle production in the scalar-tensor representation of $f(R,T)$ gravity. Due to the explicit nonminimal curvature-matter coupling in the theory, the divergence of the matter energy-momentum tensor does not vanish. We explore the physical and cosmological implications of this property by using the formalism of irreversible thermodynamics of open systems in the presence of matter creation/annihilation. The particle creation rates, pressure, temperature evolution and the expression of the comoving entropy are obtained in a covariant form","authors_text":"Francisco S. N. Lobo, Miguel A. S. Pinto, 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":"2022-05-25T07:42:24Z","title":"Gravitationally induced particle production in scalar-tensor $f(R,T)$ gravity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2205.12545","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":"sha256:6f50a6ff0ae6dece6b1464403ca909d5f4bd00a230f2c17caa705ecb47649d30","target":"record","created_at":"2026-07-05T04:53:42Z","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":"d3dc1a15ced8eb75a752a29ea735463417338d3c4155f5fb7a4bd0fd0b0e34b3","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2022-05-25T07:42:24Z","title_canon_sha256":"12620d2ec0a5bd6b757a0d4be53e9a52aef8b551883c6de634d7bcf06e52f226"},"schema_version":"1.0","source":{"id":"2205.12545","kind":"arxiv","version":3}},"canonical_sha256":"8de3bd5fe85c61b49b2d4bf4c2511b746fa65d577eb7665af09618dda82867f3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8de3bd5fe85c61b49b2d4bf4c2511b746fa65d577eb7665af09618dda82867f3","first_computed_at":"2026-07-05T04:53:42.485113Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:53:42.485113Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5QP5YCmBr/vyP3/hNXn1LT06n/3le6l4Uj9oUyVjRNoCrVw0IyAlDE6riKn7GPZzj2dZdj7jGGGidmCqHBDxDw==","signature_status":"signed_v1","signed_at":"2026-07-05T04:53:42.485599Z","signed_message":"canonical_sha256_bytes"},"source_id":"2205.12545","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6f50a6ff0ae6dece6b1464403ca909d5f4bd00a230f2c17caa705ecb47649d30","sha256:fe33017745fc2786286dcb6f6599037d10daf7acfdd74505d24aac487eaf2b44"],"state_sha256":"cdef0e616dc44d50b3684626c33ce8b2789d3c61b23852cc298efa77097984ee"}