{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:A2EQBDPXDBUX2SWF6CZASJJ4WJ","short_pith_number":"pith:A2EQBDPX","canonical_record":{"source":{"id":"1404.5226","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2014-04-21T15:39:25Z","cross_cats_sorted":[],"title_canon_sha256":"86bc9f91f8ad7aa5660bce9dd779d1babc3fac93b20945dd939f78690ee1378a","abstract_canon_sha256":"fbd67a7607a0ea7ab34bb23a565fd3732615702ea62c8f9e73a90edf64e925db"},"schema_version":"1.0"},"canonical_sha256":"0689008df718697d4ac5f0b209253cb24042248a0a25dc864100e3977597d7f3","source":{"kind":"arxiv","id":"1404.5226","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.5226","created_at":"2026-05-18T01:43:26Z"},{"alias_kind":"arxiv_version","alias_value":"1404.5226v1","created_at":"2026-05-18T01:43:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.5226","created_at":"2026-05-18T01:43:26Z"},{"alias_kind":"pith_short_12","alias_value":"A2EQBDPXDBUX","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"A2EQBDPXDBUX2SWF","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"A2EQBDPX","created_at":"2026-05-18T12:28:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:A2EQBDPXDBUX2SWF6CZASJJ4WJ","target":"record","payload":{"canonical_record":{"source":{"id":"1404.5226","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2014-04-21T15:39:25Z","cross_cats_sorted":[],"title_canon_sha256":"86bc9f91f8ad7aa5660bce9dd779d1babc3fac93b20945dd939f78690ee1378a","abstract_canon_sha256":"fbd67a7607a0ea7ab34bb23a565fd3732615702ea62c8f9e73a90edf64e925db"},"schema_version":"1.0"},"canonical_sha256":"0689008df718697d4ac5f0b209253cb24042248a0a25dc864100e3977597d7f3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:43:26.804145Z","signature_b64":"DecqTnp3jpoqRDxYMw2wJvyMAfr4RJ3gVOZQugJjXZbXSwhpbvQZAyC+oFfJfWz46Cww+J1ci/B3N31ENVIJDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0689008df718697d4ac5f0b209253cb24042248a0a25dc864100e3977597d7f3","last_reissued_at":"2026-05-18T01:43:26.803616Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:43:26.803616Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1404.5226","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":"2026-05-18T01:43:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"h89YYrIsEiSAlGdFkkAIg/LxVDdUF9CdgPzgwnWvaqTJ49ShUjWD4lbDibZkZoG1/i6k9KaCOEDV1P/sR/2bAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T17:27:16.761401Z"},"content_sha256":"4b5b0278dffb94a13f8a711a443ae7749bc1a06e457d705e607ce008e70ef7ae","schema_version":"1.0","event_id":"sha256:4b5b0278dffb94a13f8a711a443ae7749bc1a06e457d705e607ce008e70ef7ae"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:A2EQBDPXDBUX2SWF6CZASJJ4WJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Isovector proton-neutron pairing and Wigner energy in Hartree-Fock mean field calculations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"D. Negrea, N. Sandulescu","submitted_at":"2014-04-21T15:39:25Z","abstract_excerpt":"We propose a new approach for the treatment of isovector pairing in self-consistent mean field calculations which conserves exactly the isospin and the particle number in the pairing channel. The mean field is generated by a Skyrme-HF functional while the isovector pairing correlations are described in terms of quartets formed by two neutrons and two protons coupled to the total isospin T=0. In this framework we analyse the contribution of isovector pairing to the symmetry and Wigner energies. It is shown that the isovector pairing provides a good description of the Wigner energy, which is not"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.5226","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":"2026-05-18T01:43:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5tYwLcmykog2DX+JJgTEdMvpAz/cV1RzFW8Q/QSAsX/+ZbWNL1AxSL3e76H4u1Rv0XHLXVeiD/A1L3TOXIMKAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T17:27:16.761761Z"},"content_sha256":"bd405c7b593a4e2744ad30f557c004f9f920d3b9e62184dd60d7944fa9cec706","schema_version":"1.0","event_id":"sha256:bd405c7b593a4e2744ad30f557c004f9f920d3b9e62184dd60d7944fa9cec706"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/A2EQBDPXDBUX2SWF6CZASJJ4WJ/bundle.json","state_url":"https://pith.science/pith/A2EQBDPXDBUX2SWF6CZASJJ4WJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/A2EQBDPXDBUX2SWF6CZASJJ4WJ/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":"2026-06-23T17:27:16Z","links":{"resolver":"https://pith.science/pith/A2EQBDPXDBUX2SWF6CZASJJ4WJ","bundle":"https://pith.science/pith/A2EQBDPXDBUX2SWF6CZASJJ4WJ/bundle.json","state":"https://pith.science/pith/A2EQBDPXDBUX2SWF6CZASJJ4WJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/A2EQBDPXDBUX2SWF6CZASJJ4WJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:A2EQBDPXDBUX2SWF6CZASJJ4WJ","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":"fbd67a7607a0ea7ab34bb23a565fd3732615702ea62c8f9e73a90edf64e925db","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2014-04-21T15:39:25Z","title_canon_sha256":"86bc9f91f8ad7aa5660bce9dd779d1babc3fac93b20945dd939f78690ee1378a"},"schema_version":"1.0","source":{"id":"1404.5226","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.5226","created_at":"2026-05-18T01:43:26Z"},{"alias_kind":"arxiv_version","alias_value":"1404.5226v1","created_at":"2026-05-18T01:43:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.5226","created_at":"2026-05-18T01:43:26Z"},{"alias_kind":"pith_short_12","alias_value":"A2EQBDPXDBUX","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"A2EQBDPXDBUX2SWF","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"A2EQBDPX","created_at":"2026-05-18T12:28:19Z"}],"graph_snapshots":[{"event_id":"sha256:bd405c7b593a4e2744ad30f557c004f9f920d3b9e62184dd60d7944fa9cec706","target":"graph","created_at":"2026-05-18T01:43:26Z","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 propose a new approach for the treatment of isovector pairing in self-consistent mean field calculations which conserves exactly the isospin and the particle number in the pairing channel. The mean field is generated by a Skyrme-HF functional while the isovector pairing correlations are described in terms of quartets formed by two neutrons and two protons coupled to the total isospin T=0. In this framework we analyse the contribution of isovector pairing to the symmetry and Wigner energies. It is shown that the isovector pairing provides a good description of the Wigner energy, which is not","authors_text":"D. Negrea, N. Sandulescu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2014-04-21T15:39:25Z","title":"Isovector proton-neutron pairing and Wigner energy in Hartree-Fock mean field calculations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.5226","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":"sha256:4b5b0278dffb94a13f8a711a443ae7749bc1a06e457d705e607ce008e70ef7ae","target":"record","created_at":"2026-05-18T01:43:26Z","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":"fbd67a7607a0ea7ab34bb23a565fd3732615702ea62c8f9e73a90edf64e925db","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2014-04-21T15:39:25Z","title_canon_sha256":"86bc9f91f8ad7aa5660bce9dd779d1babc3fac93b20945dd939f78690ee1378a"},"schema_version":"1.0","source":{"id":"1404.5226","kind":"arxiv","version":1}},"canonical_sha256":"0689008df718697d4ac5f0b209253cb24042248a0a25dc864100e3977597d7f3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0689008df718697d4ac5f0b209253cb24042248a0a25dc864100e3977597d7f3","first_computed_at":"2026-05-18T01:43:26.803616Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:43:26.803616Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DecqTnp3jpoqRDxYMw2wJvyMAfr4RJ3gVOZQugJjXZbXSwhpbvQZAyC+oFfJfWz46Cww+J1ci/B3N31ENVIJDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:43:26.804145Z","signed_message":"canonical_sha256_bytes"},"source_id":"1404.5226","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4b5b0278dffb94a13f8a711a443ae7749bc1a06e457d705e607ce008e70ef7ae","sha256:bd405c7b593a4e2744ad30f557c004f9f920d3b9e62184dd60d7944fa9cec706"],"state_sha256":"920d336bb1ff3584304e55ce944cf1b2008a2904796fdd479b40423c8ae180bf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yFDHbZXqotQpOQLH6b6nIR+e4iob6imKnO/gtnA7SZeQ2T6jjA0plXAP38vpy+x/syE3bN98J4Fh/SjQK5mkBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-23T17:27:16.763740Z","bundle_sha256":"a12b72bc7782b61125ceb411cad524a5f423b3f7bf96aa5973253fcfe9849d3d"}}