{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:H2HOMTR7RZEIWBBJCSDQTWQUN7","short_pith_number":"pith:H2HOMTR7","canonical_record":{"source":{"id":"1503.01167","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2015-03-04T00:05:09Z","cross_cats_sorted":["astro-ph.SR","nucl-ex"],"title_canon_sha256":"7b94807860624369176836dbf11e1bf197ece789dbdcfc9a1b2bf2bb902eb83b","abstract_canon_sha256":"64e91ea65673d30b088531e976aeca822ba7d33b04810d3056baf5972ed4acbf"},"schema_version":"1.0"},"canonical_sha256":"3e8ee64e3f8e488b0429148709da146fda7a37489ecc4cbd14f3cbbb9791c60f","source":{"kind":"arxiv","id":"1503.01167","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.01167","created_at":"2026-05-18T01:37:13Z"},{"alias_kind":"arxiv_version","alias_value":"1503.01167v2","created_at":"2026-05-18T01:37:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.01167","created_at":"2026-05-18T01:37:13Z"},{"alias_kind":"pith_short_12","alias_value":"H2HOMTR7RZEI","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"H2HOMTR7RZEIWBBJ","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"H2HOMTR7","created_at":"2026-05-18T12:29:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:H2HOMTR7RZEIWBBJCSDQTWQUN7","target":"record","payload":{"canonical_record":{"source":{"id":"1503.01167","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2015-03-04T00:05:09Z","cross_cats_sorted":["astro-ph.SR","nucl-ex"],"title_canon_sha256":"7b94807860624369176836dbf11e1bf197ece789dbdcfc9a1b2bf2bb902eb83b","abstract_canon_sha256":"64e91ea65673d30b088531e976aeca822ba7d33b04810d3056baf5972ed4acbf"},"schema_version":"1.0"},"canonical_sha256":"3e8ee64e3f8e488b0429148709da146fda7a37489ecc4cbd14f3cbbb9791c60f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:37:13.697432Z","signature_b64":"L3EkaQm3ldYszoZNjt10TVt79Cp/Nh828OOYJkWoq73qjgDeCCsUDwNp/cIIzxpB1BySuHUZqCwt0iLmo9HZCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3e8ee64e3f8e488b0429148709da146fda7a37489ecc4cbd14f3cbbb9791c60f","last_reissued_at":"2026-05-18T01:37:13.696614Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:37:13.696614Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.01167","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":"2026-05-18T01:37:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YBzIT7aWteCEjt9pA8btVs8Fevn58Z3khuxwOIwvwGHOwha3xcZnIomR54EDO/VjvZWMAFMZkk/kQSXFJbGtCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T01:49:15.769208Z"},"content_sha256":"d3d5fe0d2a88afe69d97b4f46c36577cbc2566f9ad44aa5dc3efe4d900010787","schema_version":"1.0","event_id":"sha256:d3d5fe0d2a88afe69d97b4f46c36577cbc2566f9ad44aa5dc3efe4d900010787"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:H2HOMTR7RZEIWBBJCSDQTWQUN7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The isospin quartic term in the kinetic energy of neutron-rich nucleonic matter","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR","nucl-ex"],"primary_cat":"nucl-th","authors_text":"Bao-An Li, Bao-Jun Cai","submitted_at":"2015-03-04T00:05:09Z","abstract_excerpt":"The energy of a free gas of neutrons and protons is well known to be approximately isospin parabolic with a negligibly small quartic term of only $0.45$ MeV at the saturation density of nuclear matter $\\rho_0=0.16/\\rm{fm}^3$. Using an isospin-dependent single-nucleon momentum distribution including a high (low) momentum tail (depletion) with its shape parameters constrained by recent high-energy electron scattering and medium-energy nuclear photodisintegration experiments as well as the state-of-the-art calculations of the deuteron wave function and the equation of state of pure neutron matter"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.01167","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":"2026-05-18T01:37:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NL3KDljaLMuq2lPNNgyoL+MbJEMrINOSNzI36H/XtKlCZuWXQPj73hGfT7RR99BTpI+EDIQFzTZqjvaH/LwmAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T01:49:15.769575Z"},"content_sha256":"1095ddc3cf00b0e8aaf7d5ae05d804a1fd83137664dcf97ac765df4fc11bb5ab","schema_version":"1.0","event_id":"sha256:1095ddc3cf00b0e8aaf7d5ae05d804a1fd83137664dcf97ac765df4fc11bb5ab"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/H2HOMTR7RZEIWBBJCSDQTWQUN7/bundle.json","state_url":"https://pith.science/pith/H2HOMTR7RZEIWBBJCSDQTWQUN7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/H2HOMTR7RZEIWBBJCSDQTWQUN7/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":"2026-06-03T01:49:15Z","links":{"resolver":"https://pith.science/pith/H2HOMTR7RZEIWBBJCSDQTWQUN7","bundle":"https://pith.science/pith/H2HOMTR7RZEIWBBJCSDQTWQUN7/bundle.json","state":"https://pith.science/pith/H2HOMTR7RZEIWBBJCSDQTWQUN7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/H2HOMTR7RZEIWBBJCSDQTWQUN7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:H2HOMTR7RZEIWBBJCSDQTWQUN7","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":"64e91ea65673d30b088531e976aeca822ba7d33b04810d3056baf5972ed4acbf","cross_cats_sorted":["astro-ph.SR","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2015-03-04T00:05:09Z","title_canon_sha256":"7b94807860624369176836dbf11e1bf197ece789dbdcfc9a1b2bf2bb902eb83b"},"schema_version":"1.0","source":{"id":"1503.01167","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.01167","created_at":"2026-05-18T01:37:13Z"},{"alias_kind":"arxiv_version","alias_value":"1503.01167v2","created_at":"2026-05-18T01:37:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.01167","created_at":"2026-05-18T01:37:13Z"},{"alias_kind":"pith_short_12","alias_value":"H2HOMTR7RZEI","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"H2HOMTR7RZEIWBBJ","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"H2HOMTR7","created_at":"2026-05-18T12:29:22Z"}],"graph_snapshots":[{"event_id":"sha256:1095ddc3cf00b0e8aaf7d5ae05d804a1fd83137664dcf97ac765df4fc11bb5ab","target":"graph","created_at":"2026-05-18T01:37:13Z","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"},"paper":{"abstract_excerpt":"The energy of a free gas of neutrons and protons is well known to be approximately isospin parabolic with a negligibly small quartic term of only $0.45$ MeV at the saturation density of nuclear matter $\\rho_0=0.16/\\rm{fm}^3$. Using an isospin-dependent single-nucleon momentum distribution including a high (low) momentum tail (depletion) with its shape parameters constrained by recent high-energy electron scattering and medium-energy nuclear photodisintegration experiments as well as the state-of-the-art calculations of the deuteron wave function and the equation of state of pure neutron matter","authors_text":"Bao-An Li, Bao-Jun Cai","cross_cats":["astro-ph.SR","nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2015-03-04T00:05:09Z","title":"The isospin quartic term in the kinetic energy of neutron-rich nucleonic matter"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.01167","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:d3d5fe0d2a88afe69d97b4f46c36577cbc2566f9ad44aa5dc3efe4d900010787","target":"record","created_at":"2026-05-18T01:37:13Z","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":"64e91ea65673d30b088531e976aeca822ba7d33b04810d3056baf5972ed4acbf","cross_cats_sorted":["astro-ph.SR","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2015-03-04T00:05:09Z","title_canon_sha256":"7b94807860624369176836dbf11e1bf197ece789dbdcfc9a1b2bf2bb902eb83b"},"schema_version":"1.0","source":{"id":"1503.01167","kind":"arxiv","version":2}},"canonical_sha256":"3e8ee64e3f8e488b0429148709da146fda7a37489ecc4cbd14f3cbbb9791c60f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3e8ee64e3f8e488b0429148709da146fda7a37489ecc4cbd14f3cbbb9791c60f","first_computed_at":"2026-05-18T01:37:13.696614Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:37:13.696614Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"L3EkaQm3ldYszoZNjt10TVt79Cp/Nh828OOYJkWoq73qjgDeCCsUDwNp/cIIzxpB1BySuHUZqCwt0iLmo9HZCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:37:13.697432Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.01167","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d3d5fe0d2a88afe69d97b4f46c36577cbc2566f9ad44aa5dc3efe4d900010787","sha256:1095ddc3cf00b0e8aaf7d5ae05d804a1fd83137664dcf97ac765df4fc11bb5ab"],"state_sha256":"2206ae203d22a3b35305e4837718d3158c3fbff483a7a26dccc3f620d24007b9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EknWsdGTnZCBYIaSvNmYTgQj4WqhOeyrXDTRs1uG6jhuQ6vVibzfbH7rzM8ypnaMA++QsCT1BWNa2dili+6iAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T01:49:15.771540Z","bundle_sha256":"a0aaf42d9496bee74bbd287a54d7aeac019513b50b88a53c909bdb43482521e5"}}