{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:YDMIGM57UFH45M3TN57CWUJZWD","short_pith_number":"pith:YDMIGM57","canonical_record":{"source":{"id":"1408.0942","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-08-05T12:16:28Z","cross_cats_sorted":[],"title_canon_sha256":"1de5db00b9c30a957e1de3b7c454c269177a8b9cf8126b571dba44eb772061d8","abstract_canon_sha256":"aa23e8b6bbafe4147ef8be704b76ba05d2aa4979bec4d6a8abe8ba3c7ddb447d"},"schema_version":"1.0"},"canonical_sha256":"c0d88333bfa14fceb3736f7e2b5139b0fe0a678c0be01825f77925b85bea01be","source":{"kind":"arxiv","id":"1408.0942","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.0942","created_at":"2026-05-18T01:42:23Z"},{"alias_kind":"arxiv_version","alias_value":"1408.0942v1","created_at":"2026-05-18T01:42:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.0942","created_at":"2026-05-18T01:42:23Z"},{"alias_kind":"pith_short_12","alias_value":"YDMIGM57UFH4","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_16","alias_value":"YDMIGM57UFH45M3T","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_8","alias_value":"YDMIGM57","created_at":"2026-05-18T12:28:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:YDMIGM57UFH45M3TN57CWUJZWD","target":"record","payload":{"canonical_record":{"source":{"id":"1408.0942","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-08-05T12:16:28Z","cross_cats_sorted":[],"title_canon_sha256":"1de5db00b9c30a957e1de3b7c454c269177a8b9cf8126b571dba44eb772061d8","abstract_canon_sha256":"aa23e8b6bbafe4147ef8be704b76ba05d2aa4979bec4d6a8abe8ba3c7ddb447d"},"schema_version":"1.0"},"canonical_sha256":"c0d88333bfa14fceb3736f7e2b5139b0fe0a678c0be01825f77925b85bea01be","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:42:23.739292Z","signature_b64":"BqbrUbbT7UHKakugpwyf9DO4XPspDdI5ppXsLGlHLWIxL6rzL41S0TfQGRGVwBP74nsYNC7y2dorxClUiy0OAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c0d88333bfa14fceb3736f7e2b5139b0fe0a678c0be01825f77925b85bea01be","last_reissued_at":"2026-05-18T01:42:23.738846Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:42:23.738846Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1408.0942","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:42:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LANeJhaeJ3BqiwIPa/swNP7bdFjbkXzGEzI6L3GLPbP5UVDT0WTKMchuO4Gb3cbxxEExWKocLzo0IhSxqaKlAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T08:28:07.234368Z"},"content_sha256":"2b1f533748800b3fb853510540b144750086ba09a90bdd99006e9fc54cf92d8a","schema_version":"1.0","event_id":"sha256:2b1f533748800b3fb853510540b144750086ba09a90bdd99006e9fc54cf92d8a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:YDMIGM57UFH45M3TN57CWUJZWD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Entropy in the quark-hadron transition","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Gordon Baym, Kanako Yamazaki, T. Matsui","submitted_at":"2014-08-05T12:16:28Z","abstract_excerpt":"We study, in the PNJL model, how the entropy of interacting quarks reflects the change in the effective degrees of freedom as the temperature increases through the quark-hadron phase transition. With inclusion of mesonic correlations, the effective degrees of freedom change from those of pi and sigma mesons at low temperatures to those of free quarks at high temperatures, with a resultant second order phase deconfinement transition in the chiral limit."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.0942","kind":"arxiv","version":1},"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":"2026-05-18T01:42:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Srt+cfLXseJSucT1wcM4O4St1p6PiL/jZBewsoSS6vZrD6jtR4eek7rrc9sABXatHwTIhtOOvn4BC81DUx8MCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T08:28:07.234713Z"},"content_sha256":"46355b4b9296713d4b141b05062053cca144973bed395ed308faf0da881eb5d6","schema_version":"1.0","event_id":"sha256:46355b4b9296713d4b141b05062053cca144973bed395ed308faf0da881eb5d6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YDMIGM57UFH45M3TN57CWUJZWD/bundle.json","state_url":"https://pith.science/pith/YDMIGM57UFH45M3TN57CWUJZWD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YDMIGM57UFH45M3TN57CWUJZWD/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":"2026-06-01T08:28:07Z","links":{"resolver":"https://pith.science/pith/YDMIGM57UFH45M3TN57CWUJZWD","bundle":"https://pith.science/pith/YDMIGM57UFH45M3TN57CWUJZWD/bundle.json","state":"https://pith.science/pith/YDMIGM57UFH45M3TN57CWUJZWD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YDMIGM57UFH45M3TN57CWUJZWD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:YDMIGM57UFH45M3TN57CWUJZWD","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":"aa23e8b6bbafe4147ef8be704b76ba05d2aa4979bec4d6a8abe8ba3c7ddb447d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-08-05T12:16:28Z","title_canon_sha256":"1de5db00b9c30a957e1de3b7c454c269177a8b9cf8126b571dba44eb772061d8"},"schema_version":"1.0","source":{"id":"1408.0942","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.0942","created_at":"2026-05-18T01:42:23Z"},{"alias_kind":"arxiv_version","alias_value":"1408.0942v1","created_at":"2026-05-18T01:42:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.0942","created_at":"2026-05-18T01:42:23Z"},{"alias_kind":"pith_short_12","alias_value":"YDMIGM57UFH4","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_16","alias_value":"YDMIGM57UFH45M3T","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_8","alias_value":"YDMIGM57","created_at":"2026-05-18T12:28:57Z"}],"graph_snapshots":[{"event_id":"sha256:46355b4b9296713d4b141b05062053cca144973bed395ed308faf0da881eb5d6","target":"graph","created_at":"2026-05-18T01:42:23Z","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, in the PNJL model, how the entropy of interacting quarks reflects the change in the effective degrees of freedom as the temperature increases through the quark-hadron phase transition. With inclusion of mesonic correlations, the effective degrees of freedom change from those of pi and sigma mesons at low temperatures to those of free quarks at high temperatures, with a resultant second order phase deconfinement transition in the chiral limit.","authors_text":"Gordon Baym, Kanako Yamazaki, T. Matsui","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-08-05T12:16:28Z","title":"Entropy in the quark-hadron transition"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.0942","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":"sha256:2b1f533748800b3fb853510540b144750086ba09a90bdd99006e9fc54cf92d8a","target":"record","created_at":"2026-05-18T01:42:23Z","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":"aa23e8b6bbafe4147ef8be704b76ba05d2aa4979bec4d6a8abe8ba3c7ddb447d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-08-05T12:16:28Z","title_canon_sha256":"1de5db00b9c30a957e1de3b7c454c269177a8b9cf8126b571dba44eb772061d8"},"schema_version":"1.0","source":{"id":"1408.0942","kind":"arxiv","version":1}},"canonical_sha256":"c0d88333bfa14fceb3736f7e2b5139b0fe0a678c0be01825f77925b85bea01be","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c0d88333bfa14fceb3736f7e2b5139b0fe0a678c0be01825f77925b85bea01be","first_computed_at":"2026-05-18T01:42:23.738846Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:23.738846Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BqbrUbbT7UHKakugpwyf9DO4XPspDdI5ppXsLGlHLWIxL6rzL41S0TfQGRGVwBP74nsYNC7y2dorxClUiy0OAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:23.739292Z","signed_message":"canonical_sha256_bytes"},"source_id":"1408.0942","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2b1f533748800b3fb853510540b144750086ba09a90bdd99006e9fc54cf92d8a","sha256:46355b4b9296713d4b141b05062053cca144973bed395ed308faf0da881eb5d6"],"state_sha256":"9653e649a74791d82f0165212c9c302e1c0cd791d819407366d2e3eb0f1c65cc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WcNszMfdIBjqk8RL53/koY0jen3R3hQTJFEAvvV7o6jM/JWz0jYSrMa2DApJsge/WusAMyIXnKDUxCZYLEYsDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T08:28:07.236666Z","bundle_sha256":"ff43f55611454a8ae93a419cd64932d5ce891dbbcd5a23b9de488dcbac5f7e08"}}