{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:TAKCDVTMAXO35AW6X6QABWBWLL","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":"963d33f425ab38efd8529411a97ebe7f1856a62f37cf4bed383f32e024ca6847","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2020-01-02T18:32:32Z","title_canon_sha256":"131781ff1ad7245eaf64d8016dcd11c150aa08614c3ef25c3653346cf769d69a"},"schema_version":"1.0","source":{"id":"2001.00554","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2001.00554","created_at":"2026-07-05T01:29:48Z"},{"alias_kind":"arxiv_version","alias_value":"2001.00554v3","created_at":"2026-07-05T01:29:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.00554","created_at":"2026-07-05T01:29:48Z"},{"alias_kind":"pith_short_12","alias_value":"TAKCDVTMAXO3","created_at":"2026-07-05T01:29:48Z"},{"alias_kind":"pith_short_16","alias_value":"TAKCDVTMAXO35AW6","created_at":"2026-07-05T01:29:48Z"},{"alias_kind":"pith_short_8","alias_value":"TAKCDVTM","created_at":"2026-07-05T01:29:48Z"}],"graph_snapshots":[{"event_id":"sha256:a33aa517e33581bbea1c32543e11258b684227821dc8cabcc113a55dbe54bff1","target":"graph","created_at":"2026-07-05T01:29:48Z","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/2001.00554/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Second-order processes in physics is a research topic focusing attention from several fields worldwide including, for example, non-linear quantum electrodynamics with high-power lasers, neutrinoless double-$\\beta$ decay, and stimulated atomic two-photon transitions. For the electromagnetic nuclear interaction, the observation of the competitive double-$\\gamma$ decay from $^{137\\mathrm{m}}$Ba has opened up the nuclear structure field for detailed investigation of second-order processes through the manifestation of off-diagonal nuclear polarizability. Here we confirm this observation with an $8.","authors_text":"A. Pappalardo, C. Matei, D. Lattuada, D. L. Balabanski, D. Nichita, E. A\\c{c}{\\i}ks\\\"oz, G. L. Guardo, H. Lenske, L. Capponi, N. Pietralla, N. Tsoneva, P.-A. S\\\"oderstr\\\"om, T. Otsuka, T. Petruse, Y. Tsunoda","cross_cats":["nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2020-01-02T18:32:32Z","title":"Electromagnetic character of the competitive $\\gamma\\gamma/\\gamma$-decay from $^{137\\mathrm{m}}$Ba"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.00554","kind":"arxiv","version":3},"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:d21a4a93bb67d4ea802ca8abfca1d59d1dbbe4f737b80189af3b74a9c4828961","target":"record","created_at":"2026-07-05T01:29:48Z","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":"963d33f425ab38efd8529411a97ebe7f1856a62f37cf4bed383f32e024ca6847","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2020-01-02T18:32:32Z","title_canon_sha256":"131781ff1ad7245eaf64d8016dcd11c150aa08614c3ef25c3653346cf769d69a"},"schema_version":"1.0","source":{"id":"2001.00554","kind":"arxiv","version":3}},"canonical_sha256":"981421d66c05ddbe82debfa000d8365ac1c349190e56a64933d7c9b4019b19f8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"981421d66c05ddbe82debfa000d8365ac1c349190e56a64933d7c9b4019b19f8","first_computed_at":"2026-07-05T01:29:48.479154Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:29:48.479154Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"M9+npOK2suGfL5mmlNQDCGdSX2OloH+zAKsVbORQCIhA/bZJePLpsi1kH8G2+6gepxnSERdexO4J21jnMYPPAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:29:48.479647Z","signed_message":"canonical_sha256_bytes"},"source_id":"2001.00554","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d21a4a93bb67d4ea802ca8abfca1d59d1dbbe4f737b80189af3b74a9c4828961","sha256:a33aa517e33581bbea1c32543e11258b684227821dc8cabcc113a55dbe54bff1"],"state_sha256":"4745da5efb781bc14291c16413f1efbf318a69e9f2a95e7634c45ae9432aaf4d"}