{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:MB7GZ2T6IAHMWKRHDMMFEICOV4","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":"a7e0cf8a3849dc2936bc24107001e8f6b8e3c5082d8ac72ae76442d5c62df60e","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-10-05T11:39:34Z","title_canon_sha256":"7d7a4a5f8c34fad2d304f156538d539b974a61a2ce3a7775c5813e0bda197a26"},"schema_version":"1.0","source":{"id":"1110.0956","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1110.0956","created_at":"2026-05-18T02:00:17Z"},{"alias_kind":"arxiv_version","alias_value":"1110.0956v2","created_at":"2026-05-18T02:00:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.0956","created_at":"2026-05-18T02:00:17Z"},{"alias_kind":"pith_short_12","alias_value":"MB7GZ2T6IAHM","created_at":"2026-05-18T12:26:34Z"},{"alias_kind":"pith_short_16","alias_value":"MB7GZ2T6IAHMWKRH","created_at":"2026-05-18T12:26:34Z"},{"alias_kind":"pith_short_8","alias_value":"MB7GZ2T6","created_at":"2026-05-18T12:26:34Z"}],"graph_snapshots":[{"event_id":"sha256:e91282cb92bbc8273655d9ff7c935047fb30da709f2145c25584365464719e27","target":"graph","created_at":"2026-05-18T02:00:17Z","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 study the linear growth function $f$ for large scale structures in a cosmological scenario where Generalised Chaplygin Gas (GCG) serves as dark energy candidate. We parametrize the growth index parameter as a function of redshift and do a comparative study between the theoretical growth rate and the proposed parametrization. Moreover, we demonstrate that growth rates for a wide range of dark energy models can be modeled accurately by our proposed parametrization. Finally, we compile a data set consisting of 28 data points within redshift range (0.15,3.8) to constrain the growth rate. It inc","authors_text":"Anjan A. Sen, Gaveshna Gupta, Somasri Sen","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-10-05T11:39:34Z","title":"GCG Parametrization for Growth Function and Current Constraints"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.0956","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":"sha256:80fc46e13e18bb0d865ed5fb2b8888b52898d42de1151262b681282602a6858d","target":"record","created_at":"2026-05-18T02:00:17Z","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":"a7e0cf8a3849dc2936bc24107001e8f6b8e3c5082d8ac72ae76442d5c62df60e","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-10-05T11:39:34Z","title_canon_sha256":"7d7a4a5f8c34fad2d304f156538d539b974a61a2ce3a7775c5813e0bda197a26"},"schema_version":"1.0","source":{"id":"1110.0956","kind":"arxiv","version":2}},"canonical_sha256":"607e6cea7e400ecb2a271b1852204eaf045e476a222b939ec10f96567f7aa751","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"607e6cea7e400ecb2a271b1852204eaf045e476a222b939ec10f96567f7aa751","first_computed_at":"2026-05-18T02:00:17.597173Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:00:17.597173Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3OCN0m+pQduPmuOGTcZsQpxb+WTRkhiP2UbZj3nz11pHxf8XwwCXP9MiAXFxMXXu9zFmqZ0QwunxgLnGYM37DA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:00:17.597869Z","signed_message":"canonical_sha256_bytes"},"source_id":"1110.0956","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:80fc46e13e18bb0d865ed5fb2b8888b52898d42de1151262b681282602a6858d","sha256:e91282cb92bbc8273655d9ff7c935047fb30da709f2145c25584365464719e27"],"state_sha256":"38680eeb8b2c78d0eeec71a203298681ef90b7b2d28e07899ce85c6c051c0e81"}