{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:6R67C5T7F3T6AKRNBOEOUXA4YO","short_pith_number":"pith:6R67C5T7","canonical_record":{"source":{"id":"1702.02774","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-02-09T10:04:42Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"57b32527f516c7125964cd77cfd87cc7bb591a3420918859cbed5bd4907346ab","abstract_canon_sha256":"c1600e7d6f9c453faa73496af58872bd6c5a47eef4ddc76c33cc0d9ae81d0d36"},"schema_version":"1.0"},"canonical_sha256":"f47df1767f2ee7e02a2d0b88ea5c1cc3a892c501dd0cf7132b8ab593a1ce1f7d","source":{"kind":"arxiv","id":"1702.02774","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.02774","created_at":"2026-05-18T00:39:28Z"},{"alias_kind":"arxiv_version","alias_value":"1702.02774v2","created_at":"2026-05-18T00:39:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.02774","created_at":"2026-05-18T00:39:28Z"},{"alias_kind":"pith_short_12","alias_value":"6R67C5T7F3T6","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"6R67C5T7F3T6AKRN","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"6R67C5T7","created_at":"2026-05-18T12:31:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:6R67C5T7F3T6AKRNBOEOUXA4YO","target":"record","payload":{"canonical_record":{"source":{"id":"1702.02774","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-02-09T10:04:42Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"57b32527f516c7125964cd77cfd87cc7bb591a3420918859cbed5bd4907346ab","abstract_canon_sha256":"c1600e7d6f9c453faa73496af58872bd6c5a47eef4ddc76c33cc0d9ae81d0d36"},"schema_version":"1.0"},"canonical_sha256":"f47df1767f2ee7e02a2d0b88ea5c1cc3a892c501dd0cf7132b8ab593a1ce1f7d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:39:28.687172Z","signature_b64":"oUDXc7Ag7LAo0RilsBBFqsJ2cjlzmTw8bhIzANeIP83qHNC44Ecsl3YttPKWiUAnFaTOZZx8csOjeCWiydHnBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f47df1767f2ee7e02a2d0b88ea5c1cc3a892c501dd0cf7132b8ab593a1ce1f7d","last_reissued_at":"2026-05-18T00:39:28.686635Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:39:28.686635Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1702.02774","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":"2026-05-18T00:39:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BpfCfFRvgAJvjJRViD7dpLuI9YFYKKZ7/buMooy/oHMtXTVvpNINNwj3KMr2F4IzXMu1NggUmW5xpdt8NcXoBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T23:52:00.787868Z"},"content_sha256":"020edf1a8749e0742f1131d8ef0dc20e69d96fe3d18637186494ae2785b473d7","schema_version":"1.0","event_id":"sha256:020edf1a8749e0742f1131d8ef0dc20e69d96fe3d18637186494ae2785b473d7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:6R67C5T7F3T6AKRNBOEOUXA4YO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Magnetogenesis during inflation and preheating in the Starobinsky model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th"],"primary_cat":"astro-ph.CO","authors_text":"E. V. Gorbar, I. Rudenok, O. Sobol, S. Vilchinskii","submitted_at":"2017-02-09T10:04:42Z","abstract_excerpt":"By assuming the kinetic coupling $f^{2}(\\phi)FF$ of the effective inflaton field $\\phi$ with the electromagnetic field, we explore magnetogenesis during the inflation and preheating stages in the Starobinsky model. We consider the case of the exponential coupling function $f(\\phi)=\\exp(\\alpha\\phi/M_{p})$ and show that for $\\alpha \\sim 12-15$ it is possible to generate the large scale magnetic fields with strength $\\gtrsim 10^{-15}$ Gauss at the present epoch. The spectrum of generated magnetic fields is blue with the spectral index $n=1+s$, $s>0$. We have found that for the relevant values of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.02774","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":"2026-05-18T00:39:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"74g23tLTJUAbtWGmYYT3h7R6OlerRsztvLSJL05e3gayCop5ReEqvDt5tGFBj9GwpJQyZTViMIrMJS91Qr2HAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T23:52:00.788208Z"},"content_sha256":"bac7b71cc9bf6cf0316c21d95e4196fe9350ece8a801c3cf92f0667eee3209aa","schema_version":"1.0","event_id":"sha256:bac7b71cc9bf6cf0316c21d95e4196fe9350ece8a801c3cf92f0667eee3209aa"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6R67C5T7F3T6AKRNBOEOUXA4YO/bundle.json","state_url":"https://pith.science/pith/6R67C5T7F3T6AKRNBOEOUXA4YO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6R67C5T7F3T6AKRNBOEOUXA4YO/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":"2026-06-02T23:52:00Z","links":{"resolver":"https://pith.science/pith/6R67C5T7F3T6AKRNBOEOUXA4YO","bundle":"https://pith.science/pith/6R67C5T7F3T6AKRNBOEOUXA4YO/bundle.json","state":"https://pith.science/pith/6R67C5T7F3T6AKRNBOEOUXA4YO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6R67C5T7F3T6AKRNBOEOUXA4YO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:6R67C5T7F3T6AKRNBOEOUXA4YO","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":"c1600e7d6f9c453faa73496af58872bd6c5a47eef4ddc76c33cc0d9ae81d0d36","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-02-09T10:04:42Z","title_canon_sha256":"57b32527f516c7125964cd77cfd87cc7bb591a3420918859cbed5bd4907346ab"},"schema_version":"1.0","source":{"id":"1702.02774","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.02774","created_at":"2026-05-18T00:39:28Z"},{"alias_kind":"arxiv_version","alias_value":"1702.02774v2","created_at":"2026-05-18T00:39:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.02774","created_at":"2026-05-18T00:39:28Z"},{"alias_kind":"pith_short_12","alias_value":"6R67C5T7F3T6","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"6R67C5T7F3T6AKRN","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"6R67C5T7","created_at":"2026-05-18T12:31:03Z"}],"graph_snapshots":[{"event_id":"sha256:bac7b71cc9bf6cf0316c21d95e4196fe9350ece8a801c3cf92f0667eee3209aa","target":"graph","created_at":"2026-05-18T00:39:28Z","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":"By assuming the kinetic coupling $f^{2}(\\phi)FF$ of the effective inflaton field $\\phi$ with the electromagnetic field, we explore magnetogenesis during the inflation and preheating stages in the Starobinsky model. We consider the case of the exponential coupling function $f(\\phi)=\\exp(\\alpha\\phi/M_{p})$ and show that for $\\alpha \\sim 12-15$ it is possible to generate the large scale magnetic fields with strength $\\gtrsim 10^{-15}$ Gauss at the present epoch. The spectrum of generated magnetic fields is blue with the spectral index $n=1+s$, $s>0$. We have found that for the relevant values of ","authors_text":"E. V. Gorbar, I. Rudenok, O. Sobol, S. Vilchinskii","cross_cats":["hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-02-09T10:04:42Z","title":"Magnetogenesis during inflation and preheating in the Starobinsky model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.02774","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":"sha256:020edf1a8749e0742f1131d8ef0dc20e69d96fe3d18637186494ae2785b473d7","target":"record","created_at":"2026-05-18T00:39:28Z","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":"c1600e7d6f9c453faa73496af58872bd6c5a47eef4ddc76c33cc0d9ae81d0d36","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-02-09T10:04:42Z","title_canon_sha256":"57b32527f516c7125964cd77cfd87cc7bb591a3420918859cbed5bd4907346ab"},"schema_version":"1.0","source":{"id":"1702.02774","kind":"arxiv","version":2}},"canonical_sha256":"f47df1767f2ee7e02a2d0b88ea5c1cc3a892c501dd0cf7132b8ab593a1ce1f7d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f47df1767f2ee7e02a2d0b88ea5c1cc3a892c501dd0cf7132b8ab593a1ce1f7d","first_computed_at":"2026-05-18T00:39:28.686635Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:39:28.686635Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oUDXc7Ag7LAo0RilsBBFqsJ2cjlzmTw8bhIzANeIP83qHNC44Ecsl3YttPKWiUAnFaTOZZx8csOjeCWiydHnBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:39:28.687172Z","signed_message":"canonical_sha256_bytes"},"source_id":"1702.02774","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:020edf1a8749e0742f1131d8ef0dc20e69d96fe3d18637186494ae2785b473d7","sha256:bac7b71cc9bf6cf0316c21d95e4196fe9350ece8a801c3cf92f0667eee3209aa"],"state_sha256":"0c9466653993acdcb0480710ffb0ce7293a986941b279f7ea078012e1466f9b1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Zs68GrnjKkaNhuKDpDkHmHW7eTx+quqIx1AOrhKkxJxAukcyncYf5c5Cqsc9nRKsGM2tCrRQzvx4IYpuELlRAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T23:52:00.790076Z","bundle_sha256":"52434e545d5869b9aa9281e4ddf6d19ec5785631851d0def17a33488e345ee01"}}