{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:1998:ND4V25AR5AECGUHF3AVX3LJDNY","short_pith_number":"pith:ND4V25AR","schema_version":"1.0","canonical_sha256":"68f95d7411e8082350e5d82b7dad236e0dfdc88805a0cc30ea75248931c0639f","source":{"kind":"arxiv","id":"gr-qc/9805014","version":2},"attestation_state":"computed","paper":{"title":"Emergence of classicality for primordial fluctuations: Concepts and analogies","license":"","headline":"","cross_cats":["astro-ph","quant-ph"],"primary_cat":"gr-qc","authors_text":"C. Kiefer, D. Polarski","submitted_at":"1998-05-06T07:39:12Z","abstract_excerpt":"We clarify the way in which cosmological perturbations of quantum origin, produced during inflation, assume classical properties. Two features play an important role in this process: First, the dynamics of fluctuations which are presently on large cosmological scales leads to a very peculiar state (highly squeezed) that is indistinguishable, in a precise sense, from a classical stochastic process. This holds for almost all initial quantum states. Second, the process of decoherence by interaction with the environment distinguishes the field amplitude basis as a robust pointer basis. We discuss "},"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":"gr-qc/9805014","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"gr-qc","submitted_at":"1998-05-06T07:39:12Z","cross_cats_sorted":["astro-ph","quant-ph"],"title_canon_sha256":"d6c9fd8e7517df688c4c98b32df370531e098677758774019cfad8786bdbf77c","abstract_canon_sha256":"ebbf2f450fdddc3493c5076ca6c17dba3aeff740f2083b0f14f5d5f773b2ea63"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:01:16.736902Z","signature_b64":"RHJGHvkpdD/zwNL6Txv27fZzXyc8m3qfHpFP9cLOJQdAqAXso/bJyQhHoO7gdTmkeiirixMGq1sIL2HkT8nOAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"68f95d7411e8082350e5d82b7dad236e0dfdc88805a0cc30ea75248931c0639f","last_reissued_at":"2026-05-18T01:01:16.736206Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:01:16.736206Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Emergence of classicality for primordial fluctuations: Concepts and analogies","license":"","headline":"","cross_cats":["astro-ph","quant-ph"],"primary_cat":"gr-qc","authors_text":"C. Kiefer, D. Polarski","submitted_at":"1998-05-06T07:39:12Z","abstract_excerpt":"We clarify the way in which cosmological perturbations of quantum origin, produced during inflation, assume classical properties. Two features play an important role in this process: First, the dynamics of fluctuations which are presently on large cosmological scales leads to a very peculiar state (highly squeezed) that is indistinguishable, in a precise sense, from a classical stochastic process. This holds for almost all initial quantum states. Second, the process of decoherence by interaction with the environment distinguishes the field amplitude basis as a robust pointer basis. We discuss "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"gr-qc/9805014","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"gr-qc/9805014","created_at":"2026-05-18T01:01:16.736335+00:00"},{"alias_kind":"arxiv_version","alias_value":"gr-qc/9805014v2","created_at":"2026-05-18T01:01:16.736335+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.gr-qc/9805014","created_at":"2026-05-18T01:01:16.736335+00:00"},{"alias_kind":"pith_short_12","alias_value":"ND4V25AR5AEC","created_at":"2026-05-18T12:25:49.038998+00:00"},{"alias_kind":"pith_short_16","alias_value":"ND4V25AR5AECGUHF","created_at":"2026-05-18T12:25:49.038998+00:00"},{"alias_kind":"pith_short_8","alias_value":"ND4V25AR","created_at":"2026-05-18T12:25:49.038998+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"1907.00258","citing_title":"On the Quantum-to-Classical Transition of Primordial Perturbations","ref_index":25,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ND4V25AR5AECGUHF3AVX3LJDNY","json":"https://pith.science/pith/ND4V25AR5AECGUHF3AVX3LJDNY.json","graph_json":"https://pith.science/api/pith-number/ND4V25AR5AECGUHF3AVX3LJDNY/graph.json","events_json":"https://pith.science/api/pith-number/ND4V25AR5AECGUHF3AVX3LJDNY/events.json","paper":"https://pith.science/paper/ND4V25AR"},"agent_actions":{"view_html":"https://pith.science/pith/ND4V25AR5AECGUHF3AVX3LJDNY","download_json":"https://pith.science/pith/ND4V25AR5AECGUHF3AVX3LJDNY.json","view_paper":"https://pith.science/paper/ND4V25AR","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=gr-qc/9805014&json=true","fetch_graph":"https://pith.science/api/pith-number/ND4V25AR5AECGUHF3AVX3LJDNY/graph.json","fetch_events":"https://pith.science/api/pith-number/ND4V25AR5AECGUHF3AVX3LJDNY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ND4V25AR5AECGUHF3AVX3LJDNY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ND4V25AR5AECGUHF3AVX3LJDNY/action/storage_attestation","attest_author":"https://pith.science/pith/ND4V25AR5AECGUHF3AVX3LJDNY/action/author_attestation","sign_citation":"https://pith.science/pith/ND4V25AR5AECGUHF3AVX3LJDNY/action/citation_signature","submit_replication":"https://pith.science/pith/ND4V25AR5AECGUHF3AVX3LJDNY/action/replication_record"}},"created_at":"2026-05-18T01:01:16.736335+00:00","updated_at":"2026-05-18T01:01:16.736335+00:00"}