{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:BWPHXSB4UJY645OQYQ35K6XHRT","short_pith_number":"pith:BWPHXSB4","canonical_record":{"source":{"id":"1212.5364","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2012-12-21T09:09:46Z","cross_cats_sorted":[],"title_canon_sha256":"931a684a0fd0651cf098b57bc48608213ee01765c4e73810c3c5fa24afd787fd","abstract_canon_sha256":"592f30a54df0415409090f762a0217f54837527919b2117a1d71805bbcfa72d2"},"schema_version":"1.0"},"canonical_sha256":"0d9e7bc83ca271ee75d0c437d57ae78cebb9e1a6108d7ad13a4d53f53a78e5bc","source":{"kind":"arxiv","id":"1212.5364","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1212.5364","created_at":"2026-05-18T01:52:29Z"},{"alias_kind":"arxiv_version","alias_value":"1212.5364v2","created_at":"2026-05-18T01:52:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1212.5364","created_at":"2026-05-18T01:52:29Z"},{"alias_kind":"pith_short_12","alias_value":"BWPHXSB4UJY6","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"BWPHXSB4UJY645OQ","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"BWPHXSB4","created_at":"2026-05-18T12:27:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:BWPHXSB4UJY645OQYQ35K6XHRT","target":"record","payload":{"canonical_record":{"source":{"id":"1212.5364","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2012-12-21T09:09:46Z","cross_cats_sorted":[],"title_canon_sha256":"931a684a0fd0651cf098b57bc48608213ee01765c4e73810c3c5fa24afd787fd","abstract_canon_sha256":"592f30a54df0415409090f762a0217f54837527919b2117a1d71805bbcfa72d2"},"schema_version":"1.0"},"canonical_sha256":"0d9e7bc83ca271ee75d0c437d57ae78cebb9e1a6108d7ad13a4d53f53a78e5bc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:52:29.396877Z","signature_b64":"h76Tac/AvixovPK13nD66TAsoDcUNIWJFqlb8DKeoX5mc9/USHd/w8udYOK33gEVP+tdkh5a+4EnWLIsiEWDAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0d9e7bc83ca271ee75d0c437d57ae78cebb9e1a6108d7ad13a4d53f53a78e5bc","last_reissued_at":"2026-05-18T01:52:29.396245Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:52:29.396245Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1212.5364","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:52:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KQqZlfxYo5rGcZwB7hQizm3rGQ9VkUF2Vo5eQaEMi1+Du7Uj1X8dAFspM9dbMYw1SK27tbYbOvm2wOQGo5PzAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T09:27:11.850401Z"},"content_sha256":"4aa5865ef4112664459eb52c7fc9c7ad789e1363949c8d82c518c083b0587330","schema_version":"1.0","event_id":"sha256:4aa5865ef4112664459eb52c7fc9c7ad789e1363949c8d82c518c083b0587330"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:BWPHXSB4UJY645OQYQ35K6XHRT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fluctuations and Symmetry Energy in Nuclear Fragmentation Dynamics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"M. Colonna","submitted_at":"2012-12-21T09:09:46Z","abstract_excerpt":"Within a dynamical description of nuclear fragmentation, based on the liquid-gas phase transition scenario, we explore the relation between neutron-proton density fluctuations and nuclear symmetry energy. We show that, along the fragmentation path, isovector fluctuations follow the evolution of the local density and approach an equilibrium value connected to the local symmetry energy. Higher density regions are characterized by smaller average asymmetry and narrower isotopic distributions. This dynamical analysis points out that fragment final state isospin fluctuations can probe the symmetry "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1212.5364","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:52:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"22RaTirqEDumx2DEaDINAFBhunVBbA70JlqjSd7dyk6M169AEwr7vpBahvlltF/iJvrehsLAWrwpBS9zLiwUDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T09:27:11.850778Z"},"content_sha256":"609166b3759e9c0b938214f19c70ca9433f84da433d021adf2c4eea37b7954a4","schema_version":"1.0","event_id":"sha256:609166b3759e9c0b938214f19c70ca9433f84da433d021adf2c4eea37b7954a4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BWPHXSB4UJY645OQYQ35K6XHRT/bundle.json","state_url":"https://pith.science/pith/BWPHXSB4UJY645OQYQ35K6XHRT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BWPHXSB4UJY645OQYQ35K6XHRT/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-08T09:27:11Z","links":{"resolver":"https://pith.science/pith/BWPHXSB4UJY645OQYQ35K6XHRT","bundle":"https://pith.science/pith/BWPHXSB4UJY645OQYQ35K6XHRT/bundle.json","state":"https://pith.science/pith/BWPHXSB4UJY645OQYQ35K6XHRT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BWPHXSB4UJY645OQYQ35K6XHRT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:BWPHXSB4UJY645OQYQ35K6XHRT","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":"592f30a54df0415409090f762a0217f54837527919b2117a1d71805bbcfa72d2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2012-12-21T09:09:46Z","title_canon_sha256":"931a684a0fd0651cf098b57bc48608213ee01765c4e73810c3c5fa24afd787fd"},"schema_version":"1.0","source":{"id":"1212.5364","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1212.5364","created_at":"2026-05-18T01:52:29Z"},{"alias_kind":"arxiv_version","alias_value":"1212.5364v2","created_at":"2026-05-18T01:52:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1212.5364","created_at":"2026-05-18T01:52:29Z"},{"alias_kind":"pith_short_12","alias_value":"BWPHXSB4UJY6","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"BWPHXSB4UJY645OQ","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"BWPHXSB4","created_at":"2026-05-18T12:27:01Z"}],"graph_snapshots":[{"event_id":"sha256:609166b3759e9c0b938214f19c70ca9433f84da433d021adf2c4eea37b7954a4","target":"graph","created_at":"2026-05-18T01:52:29Z","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":"Within a dynamical description of nuclear fragmentation, based on the liquid-gas phase transition scenario, we explore the relation between neutron-proton density fluctuations and nuclear symmetry energy. We show that, along the fragmentation path, isovector fluctuations follow the evolution of the local density and approach an equilibrium value connected to the local symmetry energy. Higher density regions are characterized by smaller average asymmetry and narrower isotopic distributions. This dynamical analysis points out that fragment final state isospin fluctuations can probe the symmetry ","authors_text":"M. Colonna","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2012-12-21T09:09:46Z","title":"Fluctuations and Symmetry Energy in Nuclear Fragmentation Dynamics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1212.5364","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":"sha256:4aa5865ef4112664459eb52c7fc9c7ad789e1363949c8d82c518c083b0587330","target":"record","created_at":"2026-05-18T01:52:29Z","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":"592f30a54df0415409090f762a0217f54837527919b2117a1d71805bbcfa72d2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2012-12-21T09:09:46Z","title_canon_sha256":"931a684a0fd0651cf098b57bc48608213ee01765c4e73810c3c5fa24afd787fd"},"schema_version":"1.0","source":{"id":"1212.5364","kind":"arxiv","version":2}},"canonical_sha256":"0d9e7bc83ca271ee75d0c437d57ae78cebb9e1a6108d7ad13a4d53f53a78e5bc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0d9e7bc83ca271ee75d0c437d57ae78cebb9e1a6108d7ad13a4d53f53a78e5bc","first_computed_at":"2026-05-18T01:52:29.396245Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:52:29.396245Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"h76Tac/AvixovPK13nD66TAsoDcUNIWJFqlb8DKeoX5mc9/USHd/w8udYOK33gEVP+tdkh5a+4EnWLIsiEWDAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:52:29.396877Z","signed_message":"canonical_sha256_bytes"},"source_id":"1212.5364","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4aa5865ef4112664459eb52c7fc9c7ad789e1363949c8d82c518c083b0587330","sha256:609166b3759e9c0b938214f19c70ca9433f84da433d021adf2c4eea37b7954a4"],"state_sha256":"ad7922a8848b73a59464cd4174bea8f63bba3732cc4545ab0d8460f7c72a5334"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SMLDwmHNN0tR6OtQhGNcyopmHN6Ueei2gh68uL/shzLKQAhY52D3tlvZqBtWwkE/gZ9E2uEF/OS+tuC9OMtnCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T09:27:11.852696Z","bundle_sha256":"015f9657cf392e442274949c0b02a90d125335800467544b739f67e5d7386529"}}