{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2008:ZPSGPVZACFOAKBYNMHD2WTX7XH","short_pith_number":"pith:ZPSGPVZA","schema_version":"1.0","canonical_sha256":"cbe467d720115c05070d61c7ab4effb9fd9dd6e726fdb104fd8be4246f31dbf0","source":{"kind":"arxiv","id":"0805.1399","version":1},"attestation_state":"computed","paper":{"title":"$\\delta$ meson effects on neutron stars in the modified quark-meson coupling model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"Chun-Yuan Gao, Zhong-Ming Niu","submitted_at":"2008-05-09T18:51:36Z","abstract_excerpt":"The properties of neutron stars are investigated by including $\\delta$ meson field in the Lagrangian density of modified quark-meson coupling model. The $\\Sigma^-$ population with $\\delta$ meson is larger than that without $\\delta$ meson at the beginning, but it becomes smaller than that without $\\delta$ meson as the appearance of $\\Xi^-$. The $\\delta$ meson has opposite effects on hadronic matter with or without hyperons: it softens the EOSes of hadronic matter with hyperons, while it stiffens the EOSes of pure nucleonic matter. Furthermore, the leptons and the hyperons have the similar influ"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"0805.1399","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2008-05-09T18:51:36Z","cross_cats_sorted":[],"title_canon_sha256":"748e02042d6080018af09bfea4ba4a9fd37147be0acc3644f9994afb037470f9","abstract_canon_sha256":"b13564723dc9a4379a789498d4404aa5d6b719ec1ca3a92408db433e6bc3432d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:27:27.325414Z","signature_b64":"G17abnGyN5L+cuCmrlD2BqzD/AM6R5A52pS7TTSF9sRiquCt+PXsLeSqVU2EnqbbnNcCmbNos4KmVRBYb3n2Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cbe467d720115c05070d61c7ab4effb9fd9dd6e726fdb104fd8be4246f31dbf0","last_reissued_at":"2026-05-18T04:27:27.324893Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:27:27.324893Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"$\\delta$ meson effects on neutron stars in the modified quark-meson coupling model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"Chun-Yuan Gao, Zhong-Ming Niu","submitted_at":"2008-05-09T18:51:36Z","abstract_excerpt":"The properties of neutron stars are investigated by including $\\delta$ meson field in the Lagrangian density of modified quark-meson coupling model. The $\\Sigma^-$ population with $\\delta$ meson is larger than that without $\\delta$ meson at the beginning, but it becomes smaller than that without $\\delta$ meson as the appearance of $\\Xi^-$. The $\\delta$ meson has opposite effects on hadronic matter with or without hyperons: it softens the EOSes of hadronic matter with hyperons, while it stiffens the EOSes of pure nucleonic matter. Furthermore, the leptons and the hyperons have the similar influ"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0805.1399","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"0805.1399","created_at":"2026-05-18T04:27:27.324983+00:00"},{"alias_kind":"arxiv_version","alias_value":"0805.1399v1","created_at":"2026-05-18T04:27:27.324983+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0805.1399","created_at":"2026-05-18T04:27:27.324983+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZPSGPVZACFOA","created_at":"2026-05-18T12:25:58.018023+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZPSGPVZACFOAKBYN","created_at":"2026-05-18T12:25:58.018023+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZPSGPVZA","created_at":"2026-05-18T12:25:58.018023+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ZPSGPVZACFOAKBYNMHD2WTX7XH","json":"https://pith.science/pith/ZPSGPVZACFOAKBYNMHD2WTX7XH.json","graph_json":"https://pith.science/api/pith-number/ZPSGPVZACFOAKBYNMHD2WTX7XH/graph.json","events_json":"https://pith.science/api/pith-number/ZPSGPVZACFOAKBYNMHD2WTX7XH/events.json","paper":"https://pith.science/paper/ZPSGPVZA"},"agent_actions":{"view_html":"https://pith.science/pith/ZPSGPVZACFOAKBYNMHD2WTX7XH","download_json":"https://pith.science/pith/ZPSGPVZACFOAKBYNMHD2WTX7XH.json","view_paper":"https://pith.science/paper/ZPSGPVZA","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0805.1399&json=true","fetch_graph":"https://pith.science/api/pith-number/ZPSGPVZACFOAKBYNMHD2WTX7XH/graph.json","fetch_events":"https://pith.science/api/pith-number/ZPSGPVZACFOAKBYNMHD2WTX7XH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZPSGPVZACFOAKBYNMHD2WTX7XH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZPSGPVZACFOAKBYNMHD2WTX7XH/action/storage_attestation","attest_author":"https://pith.science/pith/ZPSGPVZACFOAKBYNMHD2WTX7XH/action/author_attestation","sign_citation":"https://pith.science/pith/ZPSGPVZACFOAKBYNMHD2WTX7XH/action/citation_signature","submit_replication":"https://pith.science/pith/ZPSGPVZACFOAKBYNMHD2WTX7XH/action/replication_record"}},"created_at":"2026-05-18T04:27:27.324983+00:00","updated_at":"2026-05-18T04:27:27.324983+00:00"}