{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:HJEVHTAZ6BT5R2NBEGYQBC4KTL","short_pith_number":"pith:HJEVHTAZ","canonical_record":{"source":{"id":"1909.02037","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-09-04T18:24:09Z","cross_cats_sorted":[],"title_canon_sha256":"d61146691826bcaa09e6fd335b396b1b926b379ac35d6b85153f7ab25462fd2e","abstract_canon_sha256":"9bdd5411cea1168ad272ea8d0dc097314eac0ca03c7fa3bfa974e5447267789c"},"schema_version":"1.0"},"canonical_sha256":"3a4953cc19f067d8e9a121b1008b8a9aefc0b9a03b41303fc8c475b342b7b354","source":{"kind":"arxiv","id":"1909.02037","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1909.02037","created_at":"2026-07-05T00:57:08Z"},{"alias_kind":"arxiv_version","alias_value":"1909.02037v1","created_at":"2026-07-05T00:57:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1909.02037","created_at":"2026-07-05T00:57:08Z"},{"alias_kind":"pith_short_12","alias_value":"HJEVHTAZ6BT5","created_at":"2026-07-05T00:57:08Z"},{"alias_kind":"pith_short_16","alias_value":"HJEVHTAZ6BT5R2NB","created_at":"2026-07-05T00:57:08Z"},{"alias_kind":"pith_short_8","alias_value":"HJEVHTAZ","created_at":"2026-07-05T00:57:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:HJEVHTAZ6BT5R2NBEGYQBC4KTL","target":"record","payload":{"canonical_record":{"source":{"id":"1909.02037","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-09-04T18:24:09Z","cross_cats_sorted":[],"title_canon_sha256":"d61146691826bcaa09e6fd335b396b1b926b379ac35d6b85153f7ab25462fd2e","abstract_canon_sha256":"9bdd5411cea1168ad272ea8d0dc097314eac0ca03c7fa3bfa974e5447267789c"},"schema_version":"1.0"},"canonical_sha256":"3a4953cc19f067d8e9a121b1008b8a9aefc0b9a03b41303fc8c475b342b7b354","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:57:08.221339Z","signature_b64":"aM1dp+9ahcn95zOscXj2c/4Aoueu6ljMX/Z+AX2pQAmk8U5SRnUaOX1wG6zsB0mMcGeii82HcUw3B802uiDCAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3a4953cc19f067d8e9a121b1008b8a9aefc0b9a03b41303fc8c475b342b7b354","last_reissued_at":"2026-07-05T00:57:08.220912Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:57:08.220912Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1909.02037","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:57:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xVn595rt2OdvPKq6FIESk3dFtJ9UkAx9f7EHGt3DHtArJP/tdA++Np8UEHEjjECM+Ce3oDzFKPkx2/Z07zi7CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T08:23:20.691947Z"},"content_sha256":"4cca9e4063dc4a80526f6d4012569cf6bcf210e7fdcac6cc0e6a3731aaa2aada","schema_version":"1.0","event_id":"sha256:4cca9e4063dc4a80526f6d4012569cf6bcf210e7fdcac6cc0e6a3731aaa2aada"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:HJEVHTAZ6BT5R2NBEGYQBC4KTL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Reconstruction and exact solutions for cosmological perturbations from a generalized gravity theory","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Carlos Gonz\\'alez, Jos\\'e Antonio Belinch\\'on, Ram\\'on Herrera","submitted_at":"2019-09-04T18:24:09Z","abstract_excerpt":"Scalar and tensor cosmological perturbations during an inflationary universe scenario in the context of the a generalized gravity theory are studied. This analyze is carried out considering an ansatz on the variables associated to scalar and tensor perturbation ($z_s$ and $z_t$) in the Jordan frame. In this context, we analyze two different Ansatze for the ratio $z_s/z_t$, and we study in great detail the analytical and exact solutions for the cosmological perturbations together with the corresponding reconstruction of the background variables. Recent observational data from the Planck 2018 re"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1909.02037","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/1909.02037/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:57:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VQXMrqAw2+HTf1OvJYBfLgnc+EuwE6+wkX7fli3vaV3+8n8m6sUIo8apHI8q374+/Atk5sCPg3QPffXIoLgaBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T08:23:20.692607Z"},"content_sha256":"7df8f5ed8d5752f176cb17ea95581f4ae6bd38dafa2046955ab29078dbd3ce89","schema_version":"1.0","event_id":"sha256:7df8f5ed8d5752f176cb17ea95581f4ae6bd38dafa2046955ab29078dbd3ce89"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HJEVHTAZ6BT5R2NBEGYQBC4KTL/bundle.json","state_url":"https://pith.science/pith/HJEVHTAZ6BT5R2NBEGYQBC4KTL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HJEVHTAZ6BT5R2NBEGYQBC4KTL/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":"2026-08-15T08:23:20Z","links":{"resolver":"https://pith.science/pith/HJEVHTAZ6BT5R2NBEGYQBC4KTL","bundle":"https://pith.science/pith/HJEVHTAZ6BT5R2NBEGYQBC4KTL/bundle.json","state":"https://pith.science/pith/HJEVHTAZ6BT5R2NBEGYQBC4KTL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HJEVHTAZ6BT5R2NBEGYQBC4KTL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:HJEVHTAZ6BT5R2NBEGYQBC4KTL","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":"9bdd5411cea1168ad272ea8d0dc097314eac0ca03c7fa3bfa974e5447267789c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-09-04T18:24:09Z","title_canon_sha256":"d61146691826bcaa09e6fd335b396b1b926b379ac35d6b85153f7ab25462fd2e"},"schema_version":"1.0","source":{"id":"1909.02037","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1909.02037","created_at":"2026-07-05T00:57:08Z"},{"alias_kind":"arxiv_version","alias_value":"1909.02037v1","created_at":"2026-07-05T00:57:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1909.02037","created_at":"2026-07-05T00:57:08Z"},{"alias_kind":"pith_short_12","alias_value":"HJEVHTAZ6BT5","created_at":"2026-07-05T00:57:08Z"},{"alias_kind":"pith_short_16","alias_value":"HJEVHTAZ6BT5R2NB","created_at":"2026-07-05T00:57:08Z"},{"alias_kind":"pith_short_8","alias_value":"HJEVHTAZ","created_at":"2026-07-05T00:57:08Z"}],"graph_snapshots":[{"event_id":"sha256:7df8f5ed8d5752f176cb17ea95581f4ae6bd38dafa2046955ab29078dbd3ce89","target":"graph","created_at":"2026-07-05T00:57:08Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1909.02037/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Scalar and tensor cosmological perturbations during an inflationary universe scenario in the context of the a generalized gravity theory are studied. This analyze is carried out considering an ansatz on the variables associated to scalar and tensor perturbation ($z_s$ and $z_t$) in the Jordan frame. In this context, we analyze two different Ansatze for the ratio $z_s/z_t$, and we study in great detail the analytical and exact solutions for the cosmological perturbations together with the corresponding reconstruction of the background variables. Recent observational data from the Planck 2018 re","authors_text":"Carlos Gonz\\'alez, Jos\\'e Antonio Belinch\\'on, Ram\\'on Herrera","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-09-04T18:24:09Z","title":"Reconstruction and exact solutions for cosmological perturbations from a generalized gravity theory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1909.02037","kind":"arxiv","version":1},"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":"sha256:4cca9e4063dc4a80526f6d4012569cf6bcf210e7fdcac6cc0e6a3731aaa2aada","target":"record","created_at":"2026-07-05T00:57:08Z","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":"9bdd5411cea1168ad272ea8d0dc097314eac0ca03c7fa3bfa974e5447267789c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-09-04T18:24:09Z","title_canon_sha256":"d61146691826bcaa09e6fd335b396b1b926b379ac35d6b85153f7ab25462fd2e"},"schema_version":"1.0","source":{"id":"1909.02037","kind":"arxiv","version":1}},"canonical_sha256":"3a4953cc19f067d8e9a121b1008b8a9aefc0b9a03b41303fc8c475b342b7b354","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3a4953cc19f067d8e9a121b1008b8a9aefc0b9a03b41303fc8c475b342b7b354","first_computed_at":"2026-07-05T00:57:08.220912Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:57:08.220912Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aM1dp+9ahcn95zOscXj2c/4Aoueu6ljMX/Z+AX2pQAmk8U5SRnUaOX1wG6zsB0mMcGeii82HcUw3B802uiDCAg==","signature_status":"signed_v1","signed_at":"2026-07-05T00:57:08.221339Z","signed_message":"canonical_sha256_bytes"},"source_id":"1909.02037","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4cca9e4063dc4a80526f6d4012569cf6bcf210e7fdcac6cc0e6a3731aaa2aada","sha256:7df8f5ed8d5752f176cb17ea95581f4ae6bd38dafa2046955ab29078dbd3ce89"],"state_sha256":"0943581cc8c990d7e594dcccc0f866580a1366eed6539a66072449f8840afb33"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nb+c893T+kSeSv/DWVIrtOPLgiAEqj66UvKTejRS0BYQf+36CLTXs4E2c2PhE90hUSPhQiQueHGWiAdeXQXeDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T08:23:20.699195Z","bundle_sha256":"92c372e655bd5f35aa8bb3d0e81ed67f404d96630e7c9d40f82e838a4d397ad9"}}