{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:FIXNFCUU62HRS5BHMRJNUMMILM","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":"d087589ed38b3ac87958c428f68b2160814dc88a109a179bc20d6e9ea30e7ee6","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-03-29T12:01:43Z","title_canon_sha256":"15625c6f9ad6dc9c7c148231b089f2831f752af6dd66fd6ae726bd0920ac6aea"},"schema_version":"1.0","source":{"id":"2003.14211","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.14211","created_at":"2026-07-05T00:52:53Z"},{"alias_kind":"arxiv_version","alias_value":"2003.14211v1","created_at":"2026-07-05T00:52:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.14211","created_at":"2026-07-05T00:52:53Z"},{"alias_kind":"pith_short_12","alias_value":"FIXNFCUU62HR","created_at":"2026-07-05T00:52:53Z"},{"alias_kind":"pith_short_16","alias_value":"FIXNFCUU62HRS5BH","created_at":"2026-07-05T00:52:53Z"},{"alias_kind":"pith_short_8","alias_value":"FIXNFCUU","created_at":"2026-07-05T00:52:53Z"}],"graph_snapshots":[{"event_id":"sha256:f02d94e0a249b1f0f0a830b59cf118bb8f1312ae8bfe9b120e395103feadb140","target":"graph","created_at":"2026-07-05T00:52:53Z","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/2003.14211/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The present paper is devoted to the study of bouncing cosmology in $f(R,T)$ modified gravity where we presume $f(R,T) = R + 2 \\lambda T$, with $R$ the Ricci scalar, $T$ the trace of energy momentum tensor and $\\lambda$ the model parameter. We present here a novel parametrization of Hubble parameter which is apt in representing a successful bouncing scenario undergoing no singularity. We proceed to present a complete analysis of the proposed bouncing model by studying the evolution of primordial curvature perturbations, energy conditions and stability against linear homogeneous perturbations in","authors_text":"P.K. Sahoo, Snehasish Bhattacharjee","cross_cats":["hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-03-29T12:01:43Z","title":"Comprehensive Analysis of a Non-Singular Bounce in $f(R,T)$ Gravitation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.14211","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":"sha256:5578b44e7ccecc23a230b92453a44c4f606088ded25a5e6090817a93be5524ec","target":"record","created_at":"2026-07-05T00:52:53Z","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":"d087589ed38b3ac87958c428f68b2160814dc88a109a179bc20d6e9ea30e7ee6","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-03-29T12:01:43Z","title_canon_sha256":"15625c6f9ad6dc9c7c148231b089f2831f752af6dd66fd6ae726bd0920ac6aea"},"schema_version":"1.0","source":{"id":"2003.14211","kind":"arxiv","version":1}},"canonical_sha256":"2a2ed28a94f68f1974276452da31885b3f154a07278c2698124eb3280b20b09e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2a2ed28a94f68f1974276452da31885b3f154a07278c2698124eb3280b20b09e","first_computed_at":"2026-07-05T00:52:53.597139Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:52:53.597139Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wm/84pLtMvVQJdVwzbwQ/wP6+v700LmXlZKOYXhmB8OTTN9k/gajD3EKpQG3zHmWZUM0YHcfVq5ue8h7lOwfDA==","signature_status":"signed_v1","signed_at":"2026-07-05T00:52:53.597561Z","signed_message":"canonical_sha256_bytes"},"source_id":"2003.14211","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5578b44e7ccecc23a230b92453a44c4f606088ded25a5e6090817a93be5524ec","sha256:f02d94e0a249b1f0f0a830b59cf118bb8f1312ae8bfe9b120e395103feadb140"],"state_sha256":"c12248d841522addb9526fb0ff205523771afa4dd42d4ffbf34b063ea658d813"}