{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:L75IA5NFRMWZQFB6FR6R56WQUK","short_pith_number":"pith:L75IA5NF","schema_version":"1.0","canonical_sha256":"5ffa8075a58b2d98143e2c7d1efad0a2b9d63e280b75c554a6c1f98f8003711d","source":{"kind":"arxiv","id":"0904.4584","version":1},"attestation_state":"computed","paper":{"title":"An introduction to inflation and cosmological perturbation theory","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-th"],"primary_cat":"astro-ph.CO","authors_text":"Allahabad), L. Sriramkumar (HRI","submitted_at":"2009-04-29T11:33:15Z","abstract_excerpt":"This article provides an introductory review of inflation and cosmological perturbation theory. I begin by motivating the need for an epoch of inflation during the early stages of the radiation dominated era, and describe how inflation is typically achieved using scalar fields. Then, after an overview of linear cosmological perturbation theory, I derive the equations governing the perturbations, and outline the generation of the scalar and the tensor perturbations during inflation. I illustrate that slow roll inflation naturally leads to an almost scale invariant spectrum of perturbations, a p"},"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":"0904.4584","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-04-29T11:33:15Z","cross_cats_sorted":["gr-qc","hep-th"],"title_canon_sha256":"6460eba018a58f26c4e587b0dafb9901b80729431715c3bea69bc98b942f56ef","abstract_canon_sha256":"2bea97b42afa05739a9da9fe494d651a3218c190c5c34399f2378f9f3cee4c6d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:40:02.096744Z","signature_b64":"r0Irtw2RLYJBq+NgaqFWdfxG7lL00mZRSURqBY8tN+DLUecmnxiDycFWQeHy17DnUGMNL5bunWdsKImEYDuCCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5ffa8075a58b2d98143e2c7d1efad0a2b9d63e280b75c554a6c1f98f8003711d","last_reissued_at":"2026-07-05T08:40:02.096188Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:40:02.096188Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"An introduction to inflation and cosmological perturbation theory","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-th"],"primary_cat":"astro-ph.CO","authors_text":"Allahabad), L. Sriramkumar (HRI","submitted_at":"2009-04-29T11:33:15Z","abstract_excerpt":"This article provides an introductory review of inflation and cosmological perturbation theory. I begin by motivating the need for an epoch of inflation during the early stages of the radiation dominated era, and describe how inflation is typically achieved using scalar fields. Then, after an overview of linear cosmological perturbation theory, I derive the equations governing the perturbations, and outline the generation of the scalar and the tensor perturbations during inflation. I illustrate that slow roll inflation naturally leads to an almost scale invariant spectrum of perturbations, a p"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0904.4584","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/0904.4584/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":"0904.4584","created_at":"2026-07-05T08:40:02.096251+00:00"},{"alias_kind":"arxiv_version","alias_value":"0904.4584v1","created_at":"2026-07-05T08:40:02.096251+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0904.4584","created_at":"2026-07-05T08:40:02.096251+00:00"},{"alias_kind":"pith_short_12","alias_value":"L75IA5NFRMWZ","created_at":"2026-07-05T08:40:02.096251+00:00"},{"alias_kind":"pith_short_16","alias_value":"L75IA5NFRMWZQFB6","created_at":"2026-07-05T08:40:02.096251+00:00"},{"alias_kind":"pith_short_8","alias_value":"L75IA5NF","created_at":"2026-07-05T08:40:02.096251+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":8,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2606.24868","citing_title":"Exploring Gravitational Wave Signatures Due to Primordial Non-gaussianity and Large Scale Structure Using SKAO","ref_index":120,"is_internal_anchor":false},{"citing_arxiv_id":"2407.01713","citing_title":"Precision Inflationary Predictions: Impact of Accurate End-of-Inflation Dynamics","ref_index":24,"is_internal_anchor":false},{"citing_arxiv_id":"2605.18286","citing_title":"Primary gravitational waves at high frequencies II: Emergence of the exponential cut-off in the power spectrum","ref_index":6,"is_internal_anchor":false},{"citing_arxiv_id":"2512.03959","citing_title":"Primary gravitational waves at high frequencies I: Origin of suppression in the power spectrum","ref_index":6,"is_internal_anchor":false},{"citing_arxiv_id":"2605.08428","citing_title":"Bipartite temporal Bell inequality for squeezed coherent state of inflationary perturbations","ref_index":36,"is_internal_anchor":false},{"citing_arxiv_id":"2604.24944","citing_title":"A general formalism for coupling scalar fields to the Einstein equations without a variational principle","ref_index":29,"is_internal_anchor":false},{"citing_arxiv_id":"2604.06145","citing_title":"Massive Exchange and the Sign of the Equilateral Bispectrum","ref_index":8,"is_internal_anchor":false},{"citing_arxiv_id":"2604.13547","citing_title":"Reconstructing inflationary features on large scales using genetic algorithm","ref_index":8,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/L75IA5NFRMWZQFB6FR6R56WQUK","json":"https://pith.science/pith/L75IA5NFRMWZQFB6FR6R56WQUK.json","graph_json":"https://pith.science/api/pith-number/L75IA5NFRMWZQFB6FR6R56WQUK/graph.json","events_json":"https://pith.science/api/pith-number/L75IA5NFRMWZQFB6FR6R56WQUK/events.json","paper":"https://pith.science/paper/L75IA5NF"},"agent_actions":{"view_html":"https://pith.science/pith/L75IA5NFRMWZQFB6FR6R56WQUK","download_json":"https://pith.science/pith/L75IA5NFRMWZQFB6FR6R56WQUK.json","view_paper":"https://pith.science/paper/L75IA5NF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0904.4584&json=true","fetch_graph":"https://pith.science/api/pith-number/L75IA5NFRMWZQFB6FR6R56WQUK/graph.json","fetch_events":"https://pith.science/api/pith-number/L75IA5NFRMWZQFB6FR6R56WQUK/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/L75IA5NFRMWZQFB6FR6R56WQUK/action/timestamp_anchor","attest_storage":"https://pith.science/pith/L75IA5NFRMWZQFB6FR6R56WQUK/action/storage_attestation","attest_author":"https://pith.science/pith/L75IA5NFRMWZQFB6FR6R56WQUK/action/author_attestation","sign_citation":"https://pith.science/pith/L75IA5NFRMWZQFB6FR6R56WQUK/action/citation_signature","submit_replication":"https://pith.science/pith/L75IA5NFRMWZQFB6FR6R56WQUK/action/replication_record"}},"created_at":"2026-07-05T08:40:02.096251+00:00","updated_at":"2026-07-05T08:40:02.096251+00:00"}