{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:PHYJXLVI3L4E2WLR26ZMFUFWHR","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":"07b8a7031e2f2b5360dd97667e3570d1520c0d441f895418239b3d6b47a0cca0","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-02-22T14:27:37Z","title_canon_sha256":"e1d6006ee59cf962eb5684a7a419f15bd7f9a01ca45e20851d7e678e90a8eeaa"},"schema_version":"1.0","source":{"id":"astro-ph/0402514","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0402514","created_at":"2026-07-04T15:20:13Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0402514v2","created_at":"2026-07-04T15:20:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0402514","created_at":"2026-07-04T15:20:13Z"},{"alias_kind":"pith_short_12","alias_value":"PHYJXLVI3L4E","created_at":"2026-07-04T15:20:13Z"},{"alias_kind":"pith_short_16","alias_value":"PHYJXLVI3L4E2WLR","created_at":"2026-07-04T15:20:13Z"},{"alias_kind":"pith_short_8","alias_value":"PHYJXLVI","created_at":"2026-07-04T15:20:13Z"}],"graph_snapshots":[{"event_id":"sha256:c2d6945e8e3e65cb403bdfcee41fe9462b39e7bf2bd17abd8e76a5c4a4e45841","target":"graph","created_at":"2026-07-04T15:20:13Z","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/astro-ph/0402514/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A new scenario for neutron-star cooling is proposed, based on the correspondence between pion condensation, occurring in neutron matter due to critical spin-isospin fluctuations, and the metal-insulator phase transition in a two-dimensional electron gas. Beyond the threshold density for pion condensation, where neutron-star matter loses its spatial homogeneity, the neutron single-particle spectrum acquires an insulating gap that quenches neutron contributions to neutrino-production reactions and to the star's specific heat. In the liquid phase at densities below the transition point, spin-isos","authors_text":"J. W. Clark, M. Takano, M. V. Zverev, V. A. Khodel","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2004-02-22T14:27:37Z","title":"Phase Transitions in Nucleonic Matter and Neutron-Star Cooling"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0402514","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":"sha256:42d5ef471330c819f6424ea97841a31f68d31cf0799e2c42b2a89881280753aa","target":"record","created_at":"2026-07-04T15:20:13Z","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":"07b8a7031e2f2b5360dd97667e3570d1520c0d441f895418239b3d6b47a0cca0","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-02-22T14:27:37Z","title_canon_sha256":"e1d6006ee59cf962eb5684a7a419f15bd7f9a01ca45e20851d7e678e90a8eeaa"},"schema_version":"1.0","source":{"id":"astro-ph/0402514","kind":"arxiv","version":2}},"canonical_sha256":"79f09baea8daf84d5971d7b2c2d0b63c655849b6a1b4b5a8bcb08276be61b7b5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"79f09baea8daf84d5971d7b2c2d0b63c655849b6a1b4b5a8bcb08276be61b7b5","first_computed_at":"2026-07-04T15:20:13.540740Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:20:13.540740Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mbzvU9Uh34Lv2WkhIRKP1xGnrW1QA/RZvRdsZs+Yiwc2eYhGXmZA6cYdfpOGj9BF8ui1xhabk2LmnueBSoRfCA==","signature_status":"signed_v1","signed_at":"2026-07-04T15:20:13.541152Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0402514","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:42d5ef471330c819f6424ea97841a31f68d31cf0799e2c42b2a89881280753aa","sha256:c2d6945e8e3e65cb403bdfcee41fe9462b39e7bf2bd17abd8e76a5c4a4e45841"],"state_sha256":"aaf86655b440c2e47d446218da1026c24a4aae21e0ade8b1c07f0efbb034b34f"}