{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:6O5UETATQRFJSYWRCFUIDZGWY4","short_pith_number":"pith:6O5UETAT","canonical_record":{"source":{"id":"1404.6212","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2014-04-24T18:11:28Z","cross_cats_sorted":["astro-ph.CO","hep-th"],"title_canon_sha256":"8cbb9066905f084e17465395760c60a58643ed3738346bb15d4158212d3d17af","abstract_canon_sha256":"15c3e815e779ce16a07e947fb6923db70fd14675eb5142e3eea259d97de85e6b"},"schema_version":"1.0"},"canonical_sha256":"f3bb424c13844a9962d1116881e4d6c7104864494fc31975376992094c14223a","source":{"kind":"arxiv","id":"1404.6212","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.6212","created_at":"2026-05-18T02:48:46Z"},{"alias_kind":"arxiv_version","alias_value":"1404.6212v2","created_at":"2026-05-18T02:48:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.6212","created_at":"2026-05-18T02:48:46Z"},{"alias_kind":"pith_short_12","alias_value":"6O5UETATQRFJ","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_16","alias_value":"6O5UETATQRFJSYWR","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_8","alias_value":"6O5UETAT","created_at":"2026-05-18T12:28:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:6O5UETATQRFJSYWRCFUIDZGWY4","target":"record","payload":{"canonical_record":{"source":{"id":"1404.6212","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2014-04-24T18:11:28Z","cross_cats_sorted":["astro-ph.CO","hep-th"],"title_canon_sha256":"8cbb9066905f084e17465395760c60a58643ed3738346bb15d4158212d3d17af","abstract_canon_sha256":"15c3e815e779ce16a07e947fb6923db70fd14675eb5142e3eea259d97de85e6b"},"schema_version":"1.0"},"canonical_sha256":"f3bb424c13844a9962d1116881e4d6c7104864494fc31975376992094c14223a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:48:46.042601Z","signature_b64":"eZG5STejuqCoSxHUqQ8wzsiQjJrDW8khIxDikmpXwxF8Kytchazx/za1WtrtY7pAGMWku785DrLnnAIopjSwCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f3bb424c13844a9962d1116881e4d6c7104864494fc31975376992094c14223a","last_reissued_at":"2026-05-18T02:48:46.042025Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:48:46.042025Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1404.6212","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":"2026-05-18T02:48:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QiEzI8r8Ie7MRl8BtWSM6m91ZRSpSE77NxlCtemnFZRo9jWH8cI/6ssWF2mHI0LZ3dgfipu6xlaKZOfTjESuDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T12:57:52.779081Z"},"content_sha256":"d888d3293f29408fb63c372f921512b29a71b0d33ab26586fc6e21b6d5348f98","schema_version":"1.0","event_id":"sha256:d888d3293f29408fb63c372f921512b29a71b0d33ab26586fc6e21b6d5348f98"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:6O5UETATQRFJSYWRCFUIDZGWY4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Nonminimal torsion-matter coupling extension of f(T) gravity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","hep-th"],"primary_cat":"gr-qc","authors_text":"Emmanuel N. Saridakis, Francisco S. N. Lobo, G. Otalora, Tiberiu Harko","submitted_at":"2014-04-24T18:11:28Z","abstract_excerpt":"We construct an extension of f(T) gravity with the inclusion of a non-minimal torsion-matter coupling in the action. The resulting theory is a novel gravitational modification, since it is different from both f(T) gravity, as well as from the non-minimal curvature-matter-coupled theory. The cosmological application of this new theory proves to be very interesting. In particular, we obtain an effective dark energy sector whose equation-of-state parameter can be quintessence or phantom-like, or exhibit the phantom-divide crossing, while for a large range of the model parameters the Universe resu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.6212","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":"2026-05-18T02:48:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IfZZPOID7D45b6VTxzp7yxxnFsODWPIvYNm6QrSAtJtYQxZqyOg+nZSBkeDLG2wxUkusHz0dZ8RZWkPMTBwbAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T12:57:52.779689Z"},"content_sha256":"59529c17212cf9c325918a86afd8d62bd0ce9186f44a274bcae85e774a15636e","schema_version":"1.0","event_id":"sha256:59529c17212cf9c325918a86afd8d62bd0ce9186f44a274bcae85e774a15636e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6O5UETATQRFJSYWRCFUIDZGWY4/bundle.json","state_url":"https://pith.science/pith/6O5UETATQRFJSYWRCFUIDZGWY4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6O5UETATQRFJSYWRCFUIDZGWY4/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":"2026-05-30T12:57:52Z","links":{"resolver":"https://pith.science/pith/6O5UETATQRFJSYWRCFUIDZGWY4","bundle":"https://pith.science/pith/6O5UETATQRFJSYWRCFUIDZGWY4/bundle.json","state":"https://pith.science/pith/6O5UETATQRFJSYWRCFUIDZGWY4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6O5UETATQRFJSYWRCFUIDZGWY4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:6O5UETATQRFJSYWRCFUIDZGWY4","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":"15c3e815e779ce16a07e947fb6923db70fd14675eb5142e3eea259d97de85e6b","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2014-04-24T18:11:28Z","title_canon_sha256":"8cbb9066905f084e17465395760c60a58643ed3738346bb15d4158212d3d17af"},"schema_version":"1.0","source":{"id":"1404.6212","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.6212","created_at":"2026-05-18T02:48:46Z"},{"alias_kind":"arxiv_version","alias_value":"1404.6212v2","created_at":"2026-05-18T02:48:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.6212","created_at":"2026-05-18T02:48:46Z"},{"alias_kind":"pith_short_12","alias_value":"6O5UETATQRFJ","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_16","alias_value":"6O5UETATQRFJSYWR","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_8","alias_value":"6O5UETAT","created_at":"2026-05-18T12:28:16Z"}],"graph_snapshots":[{"event_id":"sha256:59529c17212cf9c325918a86afd8d62bd0ce9186f44a274bcae85e774a15636e","target":"graph","created_at":"2026-05-18T02:48:46Z","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 construct an extension of f(T) gravity with the inclusion of a non-minimal torsion-matter coupling in the action. The resulting theory is a novel gravitational modification, since it is different from both f(T) gravity, as well as from the non-minimal curvature-matter-coupled theory. The cosmological application of this new theory proves to be very interesting. In particular, we obtain an effective dark energy sector whose equation-of-state parameter can be quintessence or phantom-like, or exhibit the phantom-divide crossing, while for a large range of the model parameters the Universe resu","authors_text":"Emmanuel N. Saridakis, Francisco S. N. Lobo, G. Otalora, 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":"2014-04-24T18:11:28Z","title":"Nonminimal torsion-matter coupling extension of f(T) gravity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.6212","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:d888d3293f29408fb63c372f921512b29a71b0d33ab26586fc6e21b6d5348f98","target":"record","created_at":"2026-05-18T02:48:46Z","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":"15c3e815e779ce16a07e947fb6923db70fd14675eb5142e3eea259d97de85e6b","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2014-04-24T18:11:28Z","title_canon_sha256":"8cbb9066905f084e17465395760c60a58643ed3738346bb15d4158212d3d17af"},"schema_version":"1.0","source":{"id":"1404.6212","kind":"arxiv","version":2}},"canonical_sha256":"f3bb424c13844a9962d1116881e4d6c7104864494fc31975376992094c14223a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f3bb424c13844a9962d1116881e4d6c7104864494fc31975376992094c14223a","first_computed_at":"2026-05-18T02:48:46.042025Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:48:46.042025Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eZG5STejuqCoSxHUqQ8wzsiQjJrDW8khIxDikmpXwxF8Kytchazx/za1WtrtY7pAGMWku785DrLnnAIopjSwCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:48:46.042601Z","signed_message":"canonical_sha256_bytes"},"source_id":"1404.6212","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d888d3293f29408fb63c372f921512b29a71b0d33ab26586fc6e21b6d5348f98","sha256:59529c17212cf9c325918a86afd8d62bd0ce9186f44a274bcae85e774a15636e"],"state_sha256":"4c649afa92c1c55c7ae7cdc26bfa1775567fe8d517eb0f116c4d7e9b353dffc8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VBw283HAjALhNKtvb4wkNI4dBgZ4JaEQXV3NMMrTXpSlg/JM/+e7KeQhmv011LA9SW0KlqTdYlFqLhZ3XJvTAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T12:57:52.783422Z","bundle_sha256":"120e735eab6d32e9f59f18504505ca3e3a77eaff8f817fad07b5fc4006ff37e0"}}