{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:LIEDG4U7VBD6J5JVYXAEPFVTUM","short_pith_number":"pith:LIEDG4U7","schema_version":"1.0","canonical_sha256":"5a0833729fa847e4f535c5c04796b3a313ba8996fea7af5e3870dce304e03eea","source":{"kind":"arxiv","id":"1411.7147","version":2},"attestation_state":"computed","paper":{"title":"Solution to new sign problems with Hamiltonian Lattice Fermions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el","nucl-th"],"primary_cat":"hep-lat","authors_text":"Emilie Huffman, Shailesh Chandrasekharan","submitted_at":"2014-11-26T09:22:12Z","abstract_excerpt":"We present a solution to the sign problem in a class of particle-hole symmetric Hamiltonian lattice fermion models on bipartite lattices using the idea of fermion bags. The solution remains valid when the particle-hole symmetry is broken through a staggered chemical potential term. This solution allows, for the first time, simulations of some massless four-fermion models with minimal fermion doubling and with an odd number of fermion flavors using ultra-local actions. One can thus study a variety of quantum phase transitions that have remained unexplored so far due to sign problems."},"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":"1411.7147","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2014-11-26T09:22:12Z","cross_cats_sorted":["cond-mat.str-el","nucl-th"],"title_canon_sha256":"3e03e449b44c063c711e24199347df799969cb84b43d29d84810d31877ca3198","abstract_canon_sha256":"284db2f93fb15691df5e53dca03131da5d7dfb53494c8bbf0fc2a508dbd2ecfb"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:25:30.791500Z","signature_b64":"e6fOiDaj5eP46CnljYJJLBd868hN8haP2VZ+GDrfpzV3gRJO6jUhEiuGDLp17PDmkoRi3EGqwxFuNOUu8WjSCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5a0833729fa847e4f535c5c04796b3a313ba8996fea7af5e3870dce304e03eea","last_reissued_at":"2026-05-18T01:25:30.791041Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:25:30.791041Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Solution to new sign problems with Hamiltonian Lattice Fermions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el","nucl-th"],"primary_cat":"hep-lat","authors_text":"Emilie Huffman, Shailesh Chandrasekharan","submitted_at":"2014-11-26T09:22:12Z","abstract_excerpt":"We present a solution to the sign problem in a class of particle-hole symmetric Hamiltonian lattice fermion models on bipartite lattices using the idea of fermion bags. The solution remains valid when the particle-hole symmetry is broken through a staggered chemical potential term. This solution allows, for the first time, simulations of some massless four-fermion models with minimal fermion doubling and with an odd number of fermion flavors using ultra-local actions. One can thus study a variety of quantum phase transitions that have remained unexplored so far due to sign problems."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1411.7147","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":"1411.7147","created_at":"2026-05-18T01:25:30.791104+00:00"},{"alias_kind":"arxiv_version","alias_value":"1411.7147v2","created_at":"2026-05-18T01:25:30.791104+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1411.7147","created_at":"2026-05-18T01:25:30.791104+00:00"},{"alias_kind":"pith_short_12","alias_value":"LIEDG4U7VBD6","created_at":"2026-05-18T12:28:38.356838+00:00"},{"alias_kind":"pith_short_16","alias_value":"LIEDG4U7VBD6J5JV","created_at":"2026-05-18T12:28:38.356838+00:00"},{"alias_kind":"pith_short_8","alias_value":"LIEDG4U7","created_at":"2026-05-18T12:28:38.356838+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/LIEDG4U7VBD6J5JVYXAEPFVTUM","json":"https://pith.science/pith/LIEDG4U7VBD6J5JVYXAEPFVTUM.json","graph_json":"https://pith.science/api/pith-number/LIEDG4U7VBD6J5JVYXAEPFVTUM/graph.json","events_json":"https://pith.science/api/pith-number/LIEDG4U7VBD6J5JVYXAEPFVTUM/events.json","paper":"https://pith.science/paper/LIEDG4U7"},"agent_actions":{"view_html":"https://pith.science/pith/LIEDG4U7VBD6J5JVYXAEPFVTUM","download_json":"https://pith.science/pith/LIEDG4U7VBD6J5JVYXAEPFVTUM.json","view_paper":"https://pith.science/paper/LIEDG4U7","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1411.7147&json=true","fetch_graph":"https://pith.science/api/pith-number/LIEDG4U7VBD6J5JVYXAEPFVTUM/graph.json","fetch_events":"https://pith.science/api/pith-number/LIEDG4U7VBD6J5JVYXAEPFVTUM/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/LIEDG4U7VBD6J5JVYXAEPFVTUM/action/timestamp_anchor","attest_storage":"https://pith.science/pith/LIEDG4U7VBD6J5JVYXAEPFVTUM/action/storage_attestation","attest_author":"https://pith.science/pith/LIEDG4U7VBD6J5JVYXAEPFVTUM/action/author_attestation","sign_citation":"https://pith.science/pith/LIEDG4U7VBD6J5JVYXAEPFVTUM/action/citation_signature","submit_replication":"https://pith.science/pith/LIEDG4U7VBD6J5JVYXAEPFVTUM/action/replication_record"}},"created_at":"2026-05-18T01:25:30.791104+00:00","updated_at":"2026-05-18T01:25:30.791104+00:00"}