{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:OIRSAKCS4DVTQCSDAM6M4OB222","short_pith_number":"pith:OIRSAKCS","schema_version":"1.0","canonical_sha256":"7223202852e0eb380a43033cce383ad6877da36028fcec02ffb83c40678cfb0c","source":{"kind":"arxiv","id":"1803.00272","version":2},"attestation_state":"computed","paper":{"title":"Detecting phases in one-dimensional many-fermion systems with the functional renormalization group","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"Bj\\\"orn Sbierski, Christoph Karrasch, Lisa Markhof, Volker Meden","submitted_at":"2018-03-01T09:45:35Z","abstract_excerpt":"The functional renormalization group (FRG) has been used widely to investigate phase diagrams, in particular the one of the two-dimensional Hubbard model. So far, the study of one-dimensional models has not attracted as much attention. We use the FRG to investigate the phases of a one-dimensional spinless tight-binding chain with nearest and next-nearest neighbor interactions at half filling. The phase diagram of this model has already been established with other methods, and phase transitions from a metallic phase to ordered phases take place at intermediate to strong interactions. The model "},"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":"1803.00272","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-03-01T09:45:35Z","cross_cats_sorted":[],"title_canon_sha256":"331f07559972c2a5c21863ab1b5f4d83f586d4fa50305945f73c89f1f25f4367","abstract_canon_sha256":"4fc0a4dfd6e9dddaa8c499975182ce8587c7a8a717b257c440a3240e7eb7569c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:13:10.382168Z","signature_b64":"yJTHjvUYgH9loJd3+oYcee92mJpmO8ws1TH4LBAmKLVlVCIRxiahqweZKMb/OAsr0T/Pe0Pha6QigdzTrCQECA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7223202852e0eb380a43033cce383ad6877da36028fcec02ffb83c40678cfb0c","last_reissued_at":"2026-05-18T00:13:10.381474Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:13:10.381474Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Detecting phases in one-dimensional many-fermion systems with the functional renormalization group","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"Bj\\\"orn Sbierski, Christoph Karrasch, Lisa Markhof, Volker Meden","submitted_at":"2018-03-01T09:45:35Z","abstract_excerpt":"The functional renormalization group (FRG) has been used widely to investigate phase diagrams, in particular the one of the two-dimensional Hubbard model. So far, the study of one-dimensional models has not attracted as much attention. We use the FRG to investigate the phases of a one-dimensional spinless tight-binding chain with nearest and next-nearest neighbor interactions at half filling. The phase diagram of this model has already been established with other methods, and phase transitions from a metallic phase to ordered phases take place at intermediate to strong interactions. The model "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.00272","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1803.00272","created_at":"2026-05-18T00:13:10.381585+00:00"},{"alias_kind":"arxiv_version","alias_value":"1803.00272v2","created_at":"2026-05-18T00:13:10.381585+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.00272","created_at":"2026-05-18T00:13:10.381585+00:00"},{"alias_kind":"pith_short_12","alias_value":"OIRSAKCS4DVT","created_at":"2026-05-18T12:32:43.782077+00:00"},{"alias_kind":"pith_short_16","alias_value":"OIRSAKCS4DVTQCSD","created_at":"2026-05-18T12:32:43.782077+00:00"},{"alias_kind":"pith_short_8","alias_value":"OIRSAKCS","created_at":"2026-05-18T12:32:43.782077+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/OIRSAKCS4DVTQCSDAM6M4OB222","json":"https://pith.science/pith/OIRSAKCS4DVTQCSDAM6M4OB222.json","graph_json":"https://pith.science/api/pith-number/OIRSAKCS4DVTQCSDAM6M4OB222/graph.json","events_json":"https://pith.science/api/pith-number/OIRSAKCS4DVTQCSDAM6M4OB222/events.json","paper":"https://pith.science/paper/OIRSAKCS"},"agent_actions":{"view_html":"https://pith.science/pith/OIRSAKCS4DVTQCSDAM6M4OB222","download_json":"https://pith.science/pith/OIRSAKCS4DVTQCSDAM6M4OB222.json","view_paper":"https://pith.science/paper/OIRSAKCS","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1803.00272&json=true","fetch_graph":"https://pith.science/api/pith-number/OIRSAKCS4DVTQCSDAM6M4OB222/graph.json","fetch_events":"https://pith.science/api/pith-number/OIRSAKCS4DVTQCSDAM6M4OB222/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/OIRSAKCS4DVTQCSDAM6M4OB222/action/timestamp_anchor","attest_storage":"https://pith.science/pith/OIRSAKCS4DVTQCSDAM6M4OB222/action/storage_attestation","attest_author":"https://pith.science/pith/OIRSAKCS4DVTQCSDAM6M4OB222/action/author_attestation","sign_citation":"https://pith.science/pith/OIRSAKCS4DVTQCSDAM6M4OB222/action/citation_signature","submit_replication":"https://pith.science/pith/OIRSAKCS4DVTQCSDAM6M4OB222/action/replication_record"}},"created_at":"2026-05-18T00:13:10.381585+00:00","updated_at":"2026-05-18T00:13:10.381585+00:00"}