{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:RDI5ZZLXZINQKZLHCJ64IWBBP2","short_pith_number":"pith:RDI5ZZLX","schema_version":"1.0","canonical_sha256":"88d1dce577ca1b056567127dc458217e9c5828a41467de35c1673cb400dac7a3","source":{"kind":"arxiv","id":"0906.2349","version":3},"attestation_state":"computed","paper":{"title":"Non-perturbative methods for a chiral effective field theory of finite density nuclear systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"A. Lacour, J.A. Oller, U.-G. Mei{\\ss}ner","submitted_at":"2009-06-12T14:37:33Z","abstract_excerpt":"Recently we have developed a novel chiral power counting scheme for an effective field theory of nuclear matter with nucleons and pions as degrees of freedom [1]. It allows for a systematic expansion taking into account both local as well as pion-mediated multi-nucleon interactions. We apply this power counting in the present study to the evaluation of the pion self-energy and the energy density in nuclear and neutron matter at next-to-leading order. To implement this power counting in actual calculations we develop here a non-perturbative method based on Unitary Chiral Perturbation Theory for"},"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":"0906.2349","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2009-06-12T14:37:33Z","cross_cats_sorted":[],"title_canon_sha256":"e75bd54853d0d5229cc61b4ced031f4600a070488deb19198818734938d00a4a","abstract_canon_sha256":"3b6b42045197007f67c3beadd905220128b556e1da89b9b291c80d25d6a0eeaa"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:30:26.620873Z","signature_b64":"zKxxN6xsgNxjFBFidYMLcDgxaae791HptIWk7f44jRbTuYFzF3V9KrQy59mA66T0R2O700ouG3PxdJFfQ7KnAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"88d1dce577ca1b056567127dc458217e9c5828a41467de35c1673cb400dac7a3","last_reissued_at":"2026-05-18T04:30:26.620333Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:30:26.620333Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Non-perturbative methods for a chiral effective field theory of finite density nuclear systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"A. Lacour, J.A. Oller, U.-G. Mei{\\ss}ner","submitted_at":"2009-06-12T14:37:33Z","abstract_excerpt":"Recently we have developed a novel chiral power counting scheme for an effective field theory of nuclear matter with nucleons and pions as degrees of freedom [1]. It allows for a systematic expansion taking into account both local as well as pion-mediated multi-nucleon interactions. We apply this power counting in the present study to the evaluation of the pion self-energy and the energy density in nuclear and neutron matter at next-to-leading order. To implement this power counting in actual calculations we develop here a non-perturbative method based on Unitary Chiral Perturbation Theory for"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.2349","kind":"arxiv","version":3},"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":"0906.2349","created_at":"2026-05-18T04:30:26.620424+00:00"},{"alias_kind":"arxiv_version","alias_value":"0906.2349v3","created_at":"2026-05-18T04:30:26.620424+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.2349","created_at":"2026-05-18T04:30:26.620424+00:00"},{"alias_kind":"pith_short_12","alias_value":"RDI5ZZLXZINQ","created_at":"2026-05-18T12:26:01.383474+00:00"},{"alias_kind":"pith_short_16","alias_value":"RDI5ZZLXZINQKZLH","created_at":"2026-05-18T12:26:01.383474+00:00"},{"alias_kind":"pith_short_8","alias_value":"RDI5ZZLX","created_at":"2026-05-18T12:26:01.383474+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2505.07794","citing_title":"Disparity in sound speeds: implications for elastic unitarity and the effective potential in quantum field theory theory","ref_index":50,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/RDI5ZZLXZINQKZLHCJ64IWBBP2","json":"https://pith.science/pith/RDI5ZZLXZINQKZLHCJ64IWBBP2.json","graph_json":"https://pith.science/api/pith-number/RDI5ZZLXZINQKZLHCJ64IWBBP2/graph.json","events_json":"https://pith.science/api/pith-number/RDI5ZZLXZINQKZLHCJ64IWBBP2/events.json","paper":"https://pith.science/paper/RDI5ZZLX"},"agent_actions":{"view_html":"https://pith.science/pith/RDI5ZZLXZINQKZLHCJ64IWBBP2","download_json":"https://pith.science/pith/RDI5ZZLXZINQKZLHCJ64IWBBP2.json","view_paper":"https://pith.science/paper/RDI5ZZLX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0906.2349&json=true","fetch_graph":"https://pith.science/api/pith-number/RDI5ZZLXZINQKZLHCJ64IWBBP2/graph.json","fetch_events":"https://pith.science/api/pith-number/RDI5ZZLXZINQKZLHCJ64IWBBP2/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/RDI5ZZLXZINQKZLHCJ64IWBBP2/action/timestamp_anchor","attest_storage":"https://pith.science/pith/RDI5ZZLXZINQKZLHCJ64IWBBP2/action/storage_attestation","attest_author":"https://pith.science/pith/RDI5ZZLXZINQKZLHCJ64IWBBP2/action/author_attestation","sign_citation":"https://pith.science/pith/RDI5ZZLXZINQKZLHCJ64IWBBP2/action/citation_signature","submit_replication":"https://pith.science/pith/RDI5ZZLXZINQKZLHCJ64IWBBP2/action/replication_record"}},"created_at":"2026-05-18T04:30:26.620424+00:00","updated_at":"2026-05-18T04:30:26.620424+00:00"}