{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:C25VLOXJPVTQQEB2ZTKLNTHOM7","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":"2a35a2b505cf9755617a3e972cb21c5a79762eb931af1b7ef4bc15d2c7feea59","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2012-07-16T21:07:32Z","title_canon_sha256":"316740a6a9eae044eb5af990c16249dda8d1f875ee7fdb64182c1969dcbc73f8"},"schema_version":"1.0","source":{"id":"1207.3828","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.3828","created_at":"2026-05-18T03:50:49Z"},{"alias_kind":"arxiv_version","alias_value":"1207.3828v1","created_at":"2026-05-18T03:50:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.3828","created_at":"2026-05-18T03:50:49Z"},{"alias_kind":"pith_short_12","alias_value":"C25VLOXJPVTQ","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"C25VLOXJPVTQQEB2","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"C25VLOXJ","created_at":"2026-05-18T12:27:01Z"}],"graph_snapshots":[{"event_id":"sha256:67d931dd19732bf10d5ea682d6c04fcca1af823e9c7ff92bc23e751fab49b4cb","target":"graph","created_at":"2026-05-18T03:50:49Z","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":"The evolution of the nuclear matter density distribution with excitation energy is studied within the framework of a finite-range interacting Fermi gas model and microcanonical thermodynamics in Thomas-Fermi approximation. It is found that with increasing excitation energy, both infinite and finite systems become unstable against infinitesimal matter density fluctuations, albeit in different ways. In modeling, this instability reveals itself via an apparent negative heat capacity of the system and is seen to result in the volume boiling in the case of infinite matter and surface boiling in the","authors_text":"J. T\\~oke, W. U. Schr\\\"oder","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2012-07-16T21:07:32Z","title":"Surface Boiling - a New Type of Instability of Highly Excited Atomic Nuclei"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.3828","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":"sha256:9215c68c2c4d3e20bfe0ee7869904b4104b44d11d877db546500099f524ff5cf","target":"record","created_at":"2026-05-18T03:50:49Z","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":"2a35a2b505cf9755617a3e972cb21c5a79762eb931af1b7ef4bc15d2c7feea59","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2012-07-16T21:07:32Z","title_canon_sha256":"316740a6a9eae044eb5af990c16249dda8d1f875ee7fdb64182c1969dcbc73f8"},"schema_version":"1.0","source":{"id":"1207.3828","kind":"arxiv","version":1}},"canonical_sha256":"16bb55bae97d6708103accd4b6ccee67e0366e65ae43e26964bea940591ff556","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"16bb55bae97d6708103accd4b6ccee67e0366e65ae43e26964bea940591ff556","first_computed_at":"2026-05-18T03:50:49.852950Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:50:49.852950Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uaON6Ed2YVyVBeca/SBhJfgPf9YOoQrxZfv6enYTSBgjzOkXAIQlj1FiIhxwteR5BbUVtSO9BgSdti6ooQ43DA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:50:49.853584Z","signed_message":"canonical_sha256_bytes"},"source_id":"1207.3828","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9215c68c2c4d3e20bfe0ee7869904b4104b44d11d877db546500099f524ff5cf","sha256:67d931dd19732bf10d5ea682d6c04fcca1af823e9c7ff92bc23e751fab49b4cb"],"state_sha256":"bd9d5f4678338729a960f9a248f2ce262dce3edabd81cdc09b6f6c3021db6a38"}