{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:2A7FMDQPYIPPGPEYO3GK3EKPWP","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":"2a648226e172f2d733688df1a2ffc31a088c05e512a2975eee3d8dcf00aed676","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2011-12-08T17:30:51Z","title_canon_sha256":"2d2d32ef09fb73ef17fd8b27ffb0057c9d01b89c6c1d714daa2495b534afea0b"},"schema_version":"1.0","source":{"id":"1112.1891","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1112.1891","created_at":"2026-05-18T03:22:54Z"},{"alias_kind":"arxiv_version","alias_value":"1112.1891v2","created_at":"2026-05-18T03:22:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1112.1891","created_at":"2026-05-18T03:22:54Z"},{"alias_kind":"pith_short_12","alias_value":"2A7FMDQPYIPP","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"2A7FMDQPYIPPGPEY","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"2A7FMDQP","created_at":"2026-05-18T12:26:18Z"}],"graph_snapshots":[{"event_id":"sha256:cc3023eb600d658624407a4aedb53ff8b6a6f5591c692b14860acc45549d34ce","target":"graph","created_at":"2026-05-18T03:22:54Z","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":"A superstrong magnetic field stimulates the spontaneous production of positrons by naked nuclei by diminishing the value of the critical charge Z_{cr} . The phenomenon of screening of the Coulomb potential by a superstrong magnetic field which has been discovered recently acts in the opposite direction and prevents the nuclei with Z<52 from becoming critical. For Z>52 for a nucleus to become critical stronger B are needed than without taking screening into account.","authors_text":"B. Machet, M. I. Vysotsky, S. I. Godunov","cross_cats":["nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2011-12-08T17:30:51Z","title":"Critical nucleus charge in a superstrong magnetic field: effect of screening"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1112.1891","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:e7df40fb8bb9e007b5db42520fd6b2fff4082ecdf9d02dc82aeac9af07524f46","target":"record","created_at":"2026-05-18T03:22:54Z","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":"2a648226e172f2d733688df1a2ffc31a088c05e512a2975eee3d8dcf00aed676","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2011-12-08T17:30:51Z","title_canon_sha256":"2d2d32ef09fb73ef17fd8b27ffb0057c9d01b89c6c1d714daa2495b534afea0b"},"schema_version":"1.0","source":{"id":"1112.1891","kind":"arxiv","version":2}},"canonical_sha256":"d03e560e0fc21ef33c9876ccad914fb3c6f1206c2b94149c38cf3aa2dc5e1bd5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d03e560e0fc21ef33c9876ccad914fb3c6f1206c2b94149c38cf3aa2dc5e1bd5","first_computed_at":"2026-05-18T03:22:54.276818Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:22:54.276818Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5KqknXgALGnC9NtAWef2Ty3AHcH99x7y/HCYhgQkLsqOXvSb0OWx7R8gj0ySlK2RsTcz9llV6lcoPdB5Z5B+DA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:22:54.277271Z","signed_message":"canonical_sha256_bytes"},"source_id":"1112.1891","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e7df40fb8bb9e007b5db42520fd6b2fff4082ecdf9d02dc82aeac9af07524f46","sha256:cc3023eb600d658624407a4aedb53ff8b6a6f5591c692b14860acc45549d34ce"],"state_sha256":"c32038cb45d37df4116caac2ab29d545397716cea108fb3fe0a8050b6f271103"}