{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:7OFRJEBOT5CJ2HNMCDJRO2B3ZY","short_pith_number":"pith:7OFRJEBO","schema_version":"1.0","canonical_sha256":"fb8b14902e9f449d1dac10d317683bce3dc07b9eae820f451ba30ec02763b5a2","source":{"kind":"arxiv","id":"1908.11595","version":1},"attestation_state":"computed","paper":{"title":"Thermodynamics and stability of $f(T,B)$ gravity with viscous fluid by observational constraints","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"gr-qc","authors_text":"Alireza Amani, A. Pourbagher","submitted_at":"2019-08-30T08:53:54Z","abstract_excerpt":"In this paper, we study the model of $f(T, B)$ gravity with viscous fluid in flat-FRW metric, in which $T$ and $B$ are torsion scalar and boundary term, respectively. We obtain the Friedmann equations in the framework of modified teleparallel gravity by tetrad components. We consider an interacting model between matter and dark energy so that universe dominates by viscous fluid. Then, we write the corresponding cosmological parameters in terms of the redshift parameter, and, we parameterize the Hubble parameter with experimental data. In what follows, we plot the corresponding cosmological par"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1908.11595","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-30T08:53:54Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"ee83dc5e17ac7ab6facf8d1886b62d0c162e690298658d3a4f5217cd688c59a3","abstract_canon_sha256":"38e93bf302d3e075408e52aee4475e484c9921a6f19f9a0ed38f40106f925e6e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:00:37.986874Z","signature_b64":"bP5WDE7SUU6aHaMN9ELDWiFnXU5U+RvLA/KDpH8AD2aKLoBTRzaylCWTgvre16/wwOJ+r5iqLl4gp++OgYPoBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fb8b14902e9f449d1dac10d317683bce3dc07b9eae820f451ba30ec02763b5a2","last_reissued_at":"2026-07-05T00:00:37.986511Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:00:37.986511Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Thermodynamics and stability of $f(T,B)$ gravity with viscous fluid by observational constraints","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"gr-qc","authors_text":"Alireza Amani, A. Pourbagher","submitted_at":"2019-08-30T08:53:54Z","abstract_excerpt":"In this paper, we study the model of $f(T, B)$ gravity with viscous fluid in flat-FRW metric, in which $T$ and $B$ are torsion scalar and boundary term, respectively. We obtain the Friedmann equations in the framework of modified teleparallel gravity by tetrad components. We consider an interacting model between matter and dark energy so that universe dominates by viscous fluid. Then, we write the corresponding cosmological parameters in terms of the redshift parameter, and, we parameterize the Hubble parameter with experimental data. In what follows, we plot the corresponding cosmological par"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.11595","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1908.11595/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1908.11595","created_at":"2026-07-05T00:00:37.986569+00:00"},{"alias_kind":"arxiv_version","alias_value":"1908.11595v1","created_at":"2026-07-05T00:00:37.986569+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.11595","created_at":"2026-07-05T00:00:37.986569+00:00"},{"alias_kind":"pith_short_12","alias_value":"7OFRJEBOT5CJ","created_at":"2026-07-05T00:00:37.986569+00:00"},{"alias_kind":"pith_short_16","alias_value":"7OFRJEBOT5CJ2HNM","created_at":"2026-07-05T00:00:37.986569+00:00"},{"alias_kind":"pith_short_8","alias_value":"7OFRJEBO","created_at":"2026-07-05T00:00:37.986569+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/7OFRJEBOT5CJ2HNMCDJRO2B3ZY","json":"https://pith.science/pith/7OFRJEBOT5CJ2HNMCDJRO2B3ZY.json","graph_json":"https://pith.science/api/pith-number/7OFRJEBOT5CJ2HNMCDJRO2B3ZY/graph.json","events_json":"https://pith.science/api/pith-number/7OFRJEBOT5CJ2HNMCDJRO2B3ZY/events.json","paper":"https://pith.science/paper/7OFRJEBO"},"agent_actions":{"view_html":"https://pith.science/pith/7OFRJEBOT5CJ2HNMCDJRO2B3ZY","download_json":"https://pith.science/pith/7OFRJEBOT5CJ2HNMCDJRO2B3ZY.json","view_paper":"https://pith.science/paper/7OFRJEBO","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1908.11595&json=true","fetch_graph":"https://pith.science/api/pith-number/7OFRJEBOT5CJ2HNMCDJRO2B3ZY/graph.json","fetch_events":"https://pith.science/api/pith-number/7OFRJEBOT5CJ2HNMCDJRO2B3ZY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/7OFRJEBOT5CJ2HNMCDJRO2B3ZY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/7OFRJEBOT5CJ2HNMCDJRO2B3ZY/action/storage_attestation","attest_author":"https://pith.science/pith/7OFRJEBOT5CJ2HNMCDJRO2B3ZY/action/author_attestation","sign_citation":"https://pith.science/pith/7OFRJEBOT5CJ2HNMCDJRO2B3ZY/action/citation_signature","submit_replication":"https://pith.science/pith/7OFRJEBOT5CJ2HNMCDJRO2B3ZY/action/replication_record"}},"created_at":"2026-07-05T00:00:37.986569+00:00","updated_at":"2026-07-05T00:00:37.986569+00:00"}