{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1999:EWNRYK4SETWMLDMHG4MQAH5CEH","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":"6dc8c445ef4ec51c4644f7a0fde0f1c91b1bcee99e558e0f9fc858995ce803bd","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"1999-06-04T13:16:49Z","title_canon_sha256":"6dcd2e712d8341f8cc73883b6c306942c31c608c5ded26f6d7846efe1e6a1212"},"schema_version":"1.0","source":{"id":"hep-ph/9906255","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9906255","created_at":"2026-05-18T02:36:27Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9906255v1","created_at":"2026-05-18T02:36:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9906255","created_at":"2026-05-18T02:36:27Z"},{"alias_kind":"pith_short_12","alias_value":"EWNRYK4SETWM","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"EWNRYK4SETWMLDMH","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"EWNRYK4S","created_at":"2026-05-18T12:25:49Z"}],"graph_snapshots":[{"event_id":"sha256:7e4a10b623203fa0c8f1f0cf0b30388fccae394a9b8c881b0a03ef4eb793f78b","target":"graph","created_at":"2026-05-18T02:36:27Z","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 calculate the rate for pair production of light pseudoscalars by strong inhomogeneous and static electric (magnetic) fields. We show that, in the case of axions, the stability of atoms over cosmic lifetimes is jeopardised unless the Peccei-Quinn symmetry breaking scale $f_a$ is larger than ${\\cal O} (10^{10} GeV)$.","authors_text":"Eduard Masso, J.A. Grifols, K.V. Shajesh, Subhendra Mohanty","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"1999-06-04T13:16:49Z","title":"Pair production of light pseudoscalar particles in strong inhomogeneous fields by the Schwinger mechanism"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9906255","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:be2d21fde35b388e8174f6a166de206f6083f5dd7893b4f14ccd58bdfa6d5d4b","target":"record","created_at":"2026-05-18T02:36:27Z","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":"6dc8c445ef4ec51c4644f7a0fde0f1c91b1bcee99e558e0f9fc858995ce803bd","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"1999-06-04T13:16:49Z","title_canon_sha256":"6dcd2e712d8341f8cc73883b6c306942c31c608c5ded26f6d7846efe1e6a1212"},"schema_version":"1.0","source":{"id":"hep-ph/9906255","kind":"arxiv","version":1}},"canonical_sha256":"259b1c2b9224ecc58d873719001fa221c073c7f93399cdf13b5ef49792c85c96","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"259b1c2b9224ecc58d873719001fa221c073c7f93399cdf13b5ef49792c85c96","first_computed_at":"2026-05-18T02:36:27.844446Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:36:27.844446Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GY4EPUvFya0h6nH1XVjlaMO52TT2ovjEuJ0jw0APo2XPcwrTs+VfoZWDwAHgXdpeABh/Fs04AkzSkPKFr5A+Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T02:36:27.845116Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/9906255","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:be2d21fde35b388e8174f6a166de206f6083f5dd7893b4f14ccd58bdfa6d5d4b","sha256:7e4a10b623203fa0c8f1f0cf0b30388fccae394a9b8c881b0a03ef4eb793f78b"],"state_sha256":"6166a2b291265e6e1f119d80fff894d33400c3cbcd04b577811379e7534d3862"}