{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2010:F6UZQ6O2BDBEELTXC4W5QEHOGJ","short_pith_number":"pith:F6UZQ6O2","schema_version":"1.0","canonical_sha256":"2fa99879da08c2422e77172dd810ee32620b838ebc1b037a970e5a8d53ab22c7","source":{"kind":"arxiv","id":"1009.0672","version":2},"attestation_state":"computed","paper":{"title":"Non-adiabatic perturbations in decaying vacuum cosmology","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-th"],"primary_cat":"astro-ph.CO","authors_text":"H. A. Borges, J. C. Fabris, S. Carneiro, W. S. Hip\\'olito-Ricaldi, W. Zimdahl","submitted_at":"2010-09-03T13:57:25Z","abstract_excerpt":"We investigate a spatially flat Friedmann-Lema\\^itre-Robertson-Walker cosmology in which a decaying vacuum term causes matter production at late times. Assuming a decay proportional to the Hubble rate, the ratio of the background energy densities of dark matter and dark energy changes with the cosmic scale factor as $a^{-3/2}$. The intrinsically non-adiabatic two-component perturbation dynamics of this model is reduced to a single second-order equation. Perturbations of the vacuum term are shown to be negligible on scales that are relevant for structure formation. On larger scales, dark-energy"},"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":"1009.0672","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-09-03T13:57:25Z","cross_cats_sorted":["gr-qc","hep-th"],"title_canon_sha256":"55f43fb70b93a45e983fde2621a04f20cce2bc5e9d1dc2be5b09fb9930116a03","abstract_canon_sha256":"3a5ae92e2aaacd98a05179f750607700a8739ca74754cfbb4426fe8b047832d9"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:14:46.125721Z","signature_b64":"R6YjFbfHAgonQk3HOhJ3DvFNFmLBR22twxuMB1M2Ha5OgB215gDNk9C76U+O1ClQocCFbyobizJskMwTlpglDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2fa99879da08c2422e77172dd810ee32620b838ebc1b037a970e5a8d53ab22c7","last_reissued_at":"2026-05-18T04:14:46.125191Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:14:46.125191Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Non-adiabatic perturbations in decaying vacuum cosmology","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-th"],"primary_cat":"astro-ph.CO","authors_text":"H. A. Borges, J. C. Fabris, S. Carneiro, W. S. Hip\\'olito-Ricaldi, W. Zimdahl","submitted_at":"2010-09-03T13:57:25Z","abstract_excerpt":"We investigate a spatially flat Friedmann-Lema\\^itre-Robertson-Walker cosmology in which a decaying vacuum term causes matter production at late times. Assuming a decay proportional to the Hubble rate, the ratio of the background energy densities of dark matter and dark energy changes with the cosmic scale factor as $a^{-3/2}$. The intrinsically non-adiabatic two-component perturbation dynamics of this model is reduced to a single second-order equation. Perturbations of the vacuum term are shown to be negligible on scales that are relevant for structure formation. On larger scales, dark-energy"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1009.0672","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":"1009.0672","created_at":"2026-05-18T04:14:46.125270+00:00"},{"alias_kind":"arxiv_version","alias_value":"1009.0672v2","created_at":"2026-05-18T04:14:46.125270+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1009.0672","created_at":"2026-05-18T04:14:46.125270+00:00"},{"alias_kind":"pith_short_12","alias_value":"F6UZQ6O2BDBE","created_at":"2026-05-18T12:26:06.534383+00:00"},{"alias_kind":"pith_short_16","alias_value":"F6UZQ6O2BDBEELTX","created_at":"2026-05-18T12:26:06.534383+00:00"},{"alias_kind":"pith_short_8","alias_value":"F6UZQ6O2","created_at":"2026-05-18T12:26:06.534383+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/F6UZQ6O2BDBEELTXC4W5QEHOGJ","json":"https://pith.science/pith/F6UZQ6O2BDBEELTXC4W5QEHOGJ.json","graph_json":"https://pith.science/api/pith-number/F6UZQ6O2BDBEELTXC4W5QEHOGJ/graph.json","events_json":"https://pith.science/api/pith-number/F6UZQ6O2BDBEELTXC4W5QEHOGJ/events.json","paper":"https://pith.science/paper/F6UZQ6O2"},"agent_actions":{"view_html":"https://pith.science/pith/F6UZQ6O2BDBEELTXC4W5QEHOGJ","download_json":"https://pith.science/pith/F6UZQ6O2BDBEELTXC4W5QEHOGJ.json","view_paper":"https://pith.science/paper/F6UZQ6O2","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1009.0672&json=true","fetch_graph":"https://pith.science/api/pith-number/F6UZQ6O2BDBEELTXC4W5QEHOGJ/graph.json","fetch_events":"https://pith.science/api/pith-number/F6UZQ6O2BDBEELTXC4W5QEHOGJ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/F6UZQ6O2BDBEELTXC4W5QEHOGJ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/F6UZQ6O2BDBEELTXC4W5QEHOGJ/action/storage_attestation","attest_author":"https://pith.science/pith/F6UZQ6O2BDBEELTXC4W5QEHOGJ/action/author_attestation","sign_citation":"https://pith.science/pith/F6UZQ6O2BDBEELTXC4W5QEHOGJ/action/citation_signature","submit_replication":"https://pith.science/pith/F6UZQ6O2BDBEELTXC4W5QEHOGJ/action/replication_record"}},"created_at":"2026-05-18T04:14:46.125270+00:00","updated_at":"2026-05-18T04:14:46.125270+00:00"}