{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:LBMQ7GSEBVE53LXRJCPHQULXEE","short_pith_number":"pith:LBMQ7GSE","canonical_record":{"source":{"id":"1412.5239","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-12-17T01:38:15Z","cross_cats_sorted":["gr-qc","hep-th"],"title_canon_sha256":"f72bcf135a8931f285eef350e4309a5485b03d008493fe7db0a5229cdb2f24fd","abstract_canon_sha256":"5becf2fea0fa2f57d8c39d5a5127f2e6fb0d5f47fff1eae4112a7fb5adad00b2"},"schema_version":"1.0"},"canonical_sha256":"58590f9a440d49ddaef1489e7851772125b85d991f2736b90cd660d4ccbf7151","source":{"kind":"arxiv","id":"1412.5239","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.5239","created_at":"2026-05-18T02:12:11Z"},{"alias_kind":"arxiv_version","alias_value":"1412.5239v2","created_at":"2026-05-18T02:12:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.5239","created_at":"2026-05-18T02:12:11Z"},{"alias_kind":"pith_short_12","alias_value":"LBMQ7GSEBVE5","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_16","alias_value":"LBMQ7GSEBVE53LXR","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_8","alias_value":"LBMQ7GSE","created_at":"2026-05-18T12:28:35Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:LBMQ7GSEBVE53LXRJCPHQULXEE","target":"record","payload":{"canonical_record":{"source":{"id":"1412.5239","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-12-17T01:38:15Z","cross_cats_sorted":["gr-qc","hep-th"],"title_canon_sha256":"f72bcf135a8931f285eef350e4309a5485b03d008493fe7db0a5229cdb2f24fd","abstract_canon_sha256":"5becf2fea0fa2f57d8c39d5a5127f2e6fb0d5f47fff1eae4112a7fb5adad00b2"},"schema_version":"1.0"},"canonical_sha256":"58590f9a440d49ddaef1489e7851772125b85d991f2736b90cd660d4ccbf7151","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:12:11.031401Z","signature_b64":"4rcweSk7dLmGWBBbrM9gK9C35rdtB4ls1EmtvFU1BgvW6Y6Rv8nwCj4W5RaBaL5LBZ1Nw0axQ8HTkz+AvcD8Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"58590f9a440d49ddaef1489e7851772125b85d991f2736b90cd660d4ccbf7151","last_reissued_at":"2026-05-18T02:12:11.030651Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:12:11.030651Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1412.5239","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:12:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"72LZXOlkW8N+/HxGsNqgv7I4FS3PGgIPsbrKOdJT10Ew5gLAUn4AlbqyKV6cEMmJlMiCl0jNjFQgjJUTM3spAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T09:57:51.902665Z"},"content_sha256":"686cd67686a004e0e968fe4fd62580c5e92c2f3034d8cbe1ca2236907cf7f37a","schema_version":"1.0","event_id":"sha256:686cd67686a004e0e968fe4fd62580c5e92c2f3034d8cbe1ca2236907cf7f37a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:LBMQ7GSEBVE53LXRJCPHQULXEE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cosmology based on $f(R)$ gravity with ${\\cal O}(1)$ eV sterile neutrino","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-th"],"primary_cat":"astro-ph.CO","authors_text":"A. A. Starobinsky, A. S. Chudaykin, D. S. Gorbunov, R. A. Burenin","submitted_at":"2014-12-17T01:38:15Z","abstract_excerpt":"We address the cosmological role of an additional ${\\cal O}(1)$ eV sterile neutrino in modified gravity models. We confront the present cosmological data with predictions of the FLRW cosmological model based on a variant of $f(R)$ modified gravity proposed by one of the authors previously. This viable cosmological model which deviation from general relativity with a cosmological constant $\\Lambda$ decreases as $R^{-2n}$ for large, but not too large values of the Ricci scalar $R$ provides an alternative explanation of present dark energy and the accelerated expansion of the Universe. Various up"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.5239","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:12:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CkN24HhvpPOG8bPnVKU1fZniUMPB5v+amCfdtvNvRJa/gKYoLk07KD6LxAUS0EVGppKl1f5ERQVTK5fkeMNvAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T09:57:51.903020Z"},"content_sha256":"f560f897a6da8a71af4bb5ebd7735a31c1c0ec88711a6bce096425affafa7a3b","schema_version":"1.0","event_id":"sha256:f560f897a6da8a71af4bb5ebd7735a31c1c0ec88711a6bce096425affafa7a3b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LBMQ7GSEBVE53LXRJCPHQULXEE/bundle.json","state_url":"https://pith.science/pith/LBMQ7GSEBVE53LXRJCPHQULXEE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LBMQ7GSEBVE53LXRJCPHQULXEE/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-12T09:57:51Z","links":{"resolver":"https://pith.science/pith/LBMQ7GSEBVE53LXRJCPHQULXEE","bundle":"https://pith.science/pith/LBMQ7GSEBVE53LXRJCPHQULXEE/bundle.json","state":"https://pith.science/pith/LBMQ7GSEBVE53LXRJCPHQULXEE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LBMQ7GSEBVE53LXRJCPHQULXEE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:LBMQ7GSEBVE53LXRJCPHQULXEE","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":"5becf2fea0fa2f57d8c39d5a5127f2e6fb0d5f47fff1eae4112a7fb5adad00b2","cross_cats_sorted":["gr-qc","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-12-17T01:38:15Z","title_canon_sha256":"f72bcf135a8931f285eef350e4309a5485b03d008493fe7db0a5229cdb2f24fd"},"schema_version":"1.0","source":{"id":"1412.5239","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.5239","created_at":"2026-05-18T02:12:11Z"},{"alias_kind":"arxiv_version","alias_value":"1412.5239v2","created_at":"2026-05-18T02:12:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.5239","created_at":"2026-05-18T02:12:11Z"},{"alias_kind":"pith_short_12","alias_value":"LBMQ7GSEBVE5","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_16","alias_value":"LBMQ7GSEBVE53LXR","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_8","alias_value":"LBMQ7GSE","created_at":"2026-05-18T12:28:35Z"}],"graph_snapshots":[{"event_id":"sha256:f560f897a6da8a71af4bb5ebd7735a31c1c0ec88711a6bce096425affafa7a3b","target":"graph","created_at":"2026-05-18T02:12:11Z","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 address the cosmological role of an additional ${\\cal O}(1)$ eV sterile neutrino in modified gravity models. We confront the present cosmological data with predictions of the FLRW cosmological model based on a variant of $f(R)$ modified gravity proposed by one of the authors previously. This viable cosmological model which deviation from general relativity with a cosmological constant $\\Lambda$ decreases as $R^{-2n}$ for large, but not too large values of the Ricci scalar $R$ provides an alternative explanation of present dark energy and the accelerated expansion of the Universe. Various up","authors_text":"A. A. Starobinsky, A. S. Chudaykin, D. S. Gorbunov, R. A. Burenin","cross_cats":["gr-qc","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-12-17T01:38:15Z","title":"Cosmology based on $f(R)$ gravity with ${\\cal O}(1)$ eV sterile neutrino"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.5239","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":"sha256:686cd67686a004e0e968fe4fd62580c5e92c2f3034d8cbe1ca2236907cf7f37a","target":"record","created_at":"2026-05-18T02:12:11Z","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":"5becf2fea0fa2f57d8c39d5a5127f2e6fb0d5f47fff1eae4112a7fb5adad00b2","cross_cats_sorted":["gr-qc","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-12-17T01:38:15Z","title_canon_sha256":"f72bcf135a8931f285eef350e4309a5485b03d008493fe7db0a5229cdb2f24fd"},"schema_version":"1.0","source":{"id":"1412.5239","kind":"arxiv","version":2}},"canonical_sha256":"58590f9a440d49ddaef1489e7851772125b85d991f2736b90cd660d4ccbf7151","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"58590f9a440d49ddaef1489e7851772125b85d991f2736b90cd660d4ccbf7151","first_computed_at":"2026-05-18T02:12:11.030651Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:12:11.030651Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4rcweSk7dLmGWBBbrM9gK9C35rdtB4ls1EmtvFU1BgvW6Y6Rv8nwCj4W5RaBaL5LBZ1Nw0axQ8HTkz+AvcD8Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:12:11.031401Z","signed_message":"canonical_sha256_bytes"},"source_id":"1412.5239","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:686cd67686a004e0e968fe4fd62580c5e92c2f3034d8cbe1ca2236907cf7f37a","sha256:f560f897a6da8a71af4bb5ebd7735a31c1c0ec88711a6bce096425affafa7a3b"],"state_sha256":"e668cef93ecf74ddcb3d00c0f50fb9dafab0dc3e1aae63815bd0da0f02931cbc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uVgHBkgJNQOzjNV7BNBgzgfkOzd+KIqbGApl2g97SVvaXWFbkDbWnfP2DLDyhoKb5/aJ7j4ji/YVfqYMLjb7BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-12T09:57:51.905200Z","bundle_sha256":"f3e3434b9da46d15a315fc3d362792cd35e1486693fa72a10e04167f286c9d5e"}}