{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:KBNJQS2D6AG5WPCGCXAFKPOJGB","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":"dd02c5891b81d5b06c9b7178fc5f9a2e2e9fc54441cb7363a73b73fefa2a5c17","cross_cats_sorted":["nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2010-10-26T13:48:52Z","title_canon_sha256":"944e2596ff732bc3cf33d302c8a08530a9b5d82e19bc01839dad59a0ac9c042e"},"schema_version":"1.0","source":{"id":"1010.5396","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1010.5396","created_at":"2026-05-18T04:34:01Z"},{"alias_kind":"arxiv_version","alias_value":"1010.5396v2","created_at":"2026-05-18T04:34:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1010.5396","created_at":"2026-05-18T04:34:01Z"},{"alias_kind":"pith_short_12","alias_value":"KBNJQS2D6AG5","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"KBNJQS2D6AG5WPCG","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"KBNJQS2D","created_at":"2026-05-18T12:26:09Z"}],"graph_snapshots":[{"event_id":"sha256:3d3fffb305d6db7765b571227fe03b570c84eb1e4c3073620a91b59c952846c0","target":"graph","created_at":"2026-05-18T04:34:01Z","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 study whether the neutron skin thickness (NST) of 208Pb originates from the bulk or from the surface of the nucleon density distributions, according to the mean-field models of nuclear structure, and find that it depends on the stiffness of the nuclear symmetry energy. The bulk contribution to NST arises from an extended sharp radius of neutrons, whereas the surface contribution arises from different widths of the neutron and proton surfaces. Nuclear models where the symmetry energy is stiff, as typical relativistic models, predict a bulk contribution in NST of 208Pb about twice as large as","authors_text":"M. Centelles, M. Warda, X. Roca-Maza, X. Vi\\~nas","cross_cats":["nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2010-10-26T13:48:52Z","title":"Origin of the neutron skin thickness of 208Pb in nuclear mean-field models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1010.5396","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":"sha256:8d9f4124bfd8f03a1db4abe70be972baa58415ac83e737516d11d9d337fc9884","target":"record","created_at":"2026-05-18T04:34:01Z","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":"dd02c5891b81d5b06c9b7178fc5f9a2e2e9fc54441cb7363a73b73fefa2a5c17","cross_cats_sorted":["nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2010-10-26T13:48:52Z","title_canon_sha256":"944e2596ff732bc3cf33d302c8a08530a9b5d82e19bc01839dad59a0ac9c042e"},"schema_version":"1.0","source":{"id":"1010.5396","kind":"arxiv","version":2}},"canonical_sha256":"505a984b43f00ddb3c4615c0553dc9307c148dac7842b4a94afe8ab990e43b43","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"505a984b43f00ddb3c4615c0553dc9307c148dac7842b4a94afe8ab990e43b43","first_computed_at":"2026-05-18T04:34:01.251402Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:34:01.251402Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZkRI3TXWU08w1ElkD54aunBL0fXTSf5BhDx2J1k04rpvVzZstpAo1K1NZaZh/LqYfHVo1fPuuzxfbkvmQRL3AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:34:01.251839Z","signed_message":"canonical_sha256_bytes"},"source_id":"1010.5396","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8d9f4124bfd8f03a1db4abe70be972baa58415ac83e737516d11d9d337fc9884","sha256:3d3fffb305d6db7765b571227fe03b570c84eb1e4c3073620a91b59c952846c0"],"state_sha256":"609653a42cacc9f5fd3e63b0b68182bc79f60464b5046e1b2bba1eb8781534f0"}