{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:HO55AUAXVVOTX32NZGYJXLY7G3","short_pith_number":"pith:HO55AUAX","canonical_record":{"source":{"id":"1902.05769","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-02-15T11:10:26Z","cross_cats_sorted":["nucl-ex"],"title_canon_sha256":"76879612b522beb2402abf575e4d27947a5a2356b26afd0d5e646b91c47e7dcb","abstract_canon_sha256":"133e4cd233ddd740cdf693fff57222b3fc175a9b4d2bb952d2804c479ceca865"},"schema_version":"1.0"},"canonical_sha256":"3bbbd05017ad5d3bef4dc9b09baf1f36c109c9b27490dace8159ba6d5b6a46d3","source":{"kind":"arxiv","id":"1902.05769","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.05769","created_at":"2026-05-17T23:53:56Z"},{"alias_kind":"arxiv_version","alias_value":"1902.05769v1","created_at":"2026-05-17T23:53:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.05769","created_at":"2026-05-17T23:53:56Z"},{"alias_kind":"pith_short_12","alias_value":"HO55AUAXVVOT","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"HO55AUAXVVOTX32N","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"HO55AUAX","created_at":"2026-05-18T12:33:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:HO55AUAXVVOTX32NZGYJXLY7G3","target":"record","payload":{"canonical_record":{"source":{"id":"1902.05769","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-02-15T11:10:26Z","cross_cats_sorted":["nucl-ex"],"title_canon_sha256":"76879612b522beb2402abf575e4d27947a5a2356b26afd0d5e646b91c47e7dcb","abstract_canon_sha256":"133e4cd233ddd740cdf693fff57222b3fc175a9b4d2bb952d2804c479ceca865"},"schema_version":"1.0"},"canonical_sha256":"3bbbd05017ad5d3bef4dc9b09baf1f36c109c9b27490dace8159ba6d5b6a46d3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:53:56.209296Z","signature_b64":"ijdJL+yKkeONiHqwmlqHg83c90KCjLGP7lEg12qeDw171KLmap5JXT9VNxTu1pY5ugRk08AocsUfkxsNLeUdCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3bbbd05017ad5d3bef4dc9b09baf1f36c109c9b27490dace8159ba6d5b6a46d3","last_reissued_at":"2026-05-17T23:53:56.208656Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:53:56.208656Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1902.05769","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":"2026-05-17T23:53:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FhxOIVf/KJpsc03NGAH8RcAjQBqJgqGLx0d0NfxoiHPl5M8/AxSvQIWDRHqwmg25EKD5nP+kd3HcmdAe5r5LCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T15:27:00.048378Z"},"content_sha256":"5ddaffa355ffc1d044bfea32bf38fc5ac050b27f4b560bf85c5df99581977911","schema_version":"1.0","event_id":"sha256:5ddaffa355ffc1d044bfea32bf38fc5ac050b27f4b560bf85c5df99581977911"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:HO55AUAXVVOTX32NZGYJXLY7G3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fock contributions to nuclear symmetry energy and its slope parameter based on Lorentz-covariant decomposition of nucleon self-energies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"nucl-th","authors_text":"Chikako Ishizuka, Koichi Saito, K. S. Kim, Myung-Ki Cheoun, Tomoyuki Maruyama, Tsuyoshi Miyatsu","submitted_at":"2019-02-15T11:10:26Z","abstract_excerpt":"Using relativistic Hartree-Fock (RHF) approximation, we study the effect of Fock terms on the nuclear properties not only around the saturation density, $\\rho_{0}$, but also at higher densities. In particular, we investigate how the momentum dependence due to the exchange contribution affects the nuclear symmetry energy and its slope parameter, using the Lorentz-covariant decomposition of nucleon self-energies in an extended version of the RHF model, in which the exchange terms are adjusted so as to reproduce the single-nucleon potential at $\\rho_{0}$. We find that the Fock contribution suppre"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.05769","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":"2026-05-17T23:53:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Uz8iP92AckgEtP/wYrA7jPfT8T231UbfcsanY4o6DrkJpEje6WnLQ6S6tcLifhKfuVgnPH0UiGODYHV5qSUHCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T15:27:00.049060Z"},"content_sha256":"0e20e4f1b6f672b00891500c46a9535a36ed95f6376eaec19a335d07643c89f0","schema_version":"1.0","event_id":"sha256:0e20e4f1b6f672b00891500c46a9535a36ed95f6376eaec19a335d07643c89f0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HO55AUAXVVOTX32NZGYJXLY7G3/bundle.json","state_url":"https://pith.science/pith/HO55AUAXVVOTX32NZGYJXLY7G3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HO55AUAXVVOTX32NZGYJXLY7G3/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":"2026-06-06T15:27:00Z","links":{"resolver":"https://pith.science/pith/HO55AUAXVVOTX32NZGYJXLY7G3","bundle":"https://pith.science/pith/HO55AUAXVVOTX32NZGYJXLY7G3/bundle.json","state":"https://pith.science/pith/HO55AUAXVVOTX32NZGYJXLY7G3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HO55AUAXVVOTX32NZGYJXLY7G3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:HO55AUAXVVOTX32NZGYJXLY7G3","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":"133e4cd233ddd740cdf693fff57222b3fc175a9b4d2bb952d2804c479ceca865","cross_cats_sorted":["nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-02-15T11:10:26Z","title_canon_sha256":"76879612b522beb2402abf575e4d27947a5a2356b26afd0d5e646b91c47e7dcb"},"schema_version":"1.0","source":{"id":"1902.05769","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.05769","created_at":"2026-05-17T23:53:56Z"},{"alias_kind":"arxiv_version","alias_value":"1902.05769v1","created_at":"2026-05-17T23:53:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.05769","created_at":"2026-05-17T23:53:56Z"},{"alias_kind":"pith_short_12","alias_value":"HO55AUAXVVOT","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"HO55AUAXVVOTX32N","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"HO55AUAX","created_at":"2026-05-18T12:33:18Z"}],"graph_snapshots":[{"event_id":"sha256:0e20e4f1b6f672b00891500c46a9535a36ed95f6376eaec19a335d07643c89f0","target":"graph","created_at":"2026-05-17T23:53:56Z","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":"Using relativistic Hartree-Fock (RHF) approximation, we study the effect of Fock terms on the nuclear properties not only around the saturation density, $\\rho_{0}$, but also at higher densities. In particular, we investigate how the momentum dependence due to the exchange contribution affects the nuclear symmetry energy and its slope parameter, using the Lorentz-covariant decomposition of nucleon self-energies in an extended version of the RHF model, in which the exchange terms are adjusted so as to reproduce the single-nucleon potential at $\\rho_{0}$. We find that the Fock contribution suppre","authors_text":"Chikako Ishizuka, Koichi Saito, K. S. Kim, Myung-Ki Cheoun, Tomoyuki Maruyama, Tsuyoshi Miyatsu","cross_cats":["nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-02-15T11:10:26Z","title":"Fock contributions to nuclear symmetry energy and its slope parameter based on Lorentz-covariant decomposition of nucleon self-energies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.05769","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":"sha256:5ddaffa355ffc1d044bfea32bf38fc5ac050b27f4b560bf85c5df99581977911","target":"record","created_at":"2026-05-17T23:53:56Z","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":"133e4cd233ddd740cdf693fff57222b3fc175a9b4d2bb952d2804c479ceca865","cross_cats_sorted":["nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-02-15T11:10:26Z","title_canon_sha256":"76879612b522beb2402abf575e4d27947a5a2356b26afd0d5e646b91c47e7dcb"},"schema_version":"1.0","source":{"id":"1902.05769","kind":"arxiv","version":1}},"canonical_sha256":"3bbbd05017ad5d3bef4dc9b09baf1f36c109c9b27490dace8159ba6d5b6a46d3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3bbbd05017ad5d3bef4dc9b09baf1f36c109c9b27490dace8159ba6d5b6a46d3","first_computed_at":"2026-05-17T23:53:56.208656Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:53:56.208656Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ijdJL+yKkeONiHqwmlqHg83c90KCjLGP7lEg12qeDw171KLmap5JXT9VNxTu1pY5ugRk08AocsUfkxsNLeUdCw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:53:56.209296Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.05769","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5ddaffa355ffc1d044bfea32bf38fc5ac050b27f4b560bf85c5df99581977911","sha256:0e20e4f1b6f672b00891500c46a9535a36ed95f6376eaec19a335d07643c89f0"],"state_sha256":"b8c15254284412b1a00d48d517f80b03314c82e79a99bff5e0fa7e08dfb36a8a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2khdOnHzVkeA/uoV55iCiBdYvAaZTThjIiopxLaQhWlCrodJaM69rRExztKm7d4e9ETG72q269JZLWgAHRiwCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T15:27:00.052999Z","bundle_sha256":"ef3a4f4485e286f52971cc9c359e40a232b585ebf8e6d77f5c011a2f987ce0d4"}}