{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:7QLBNBINEGJSO2E2MIFSSAGG3J","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":"949bd18d962bc5d949f5a983153990d6d954db855e34bf2d3e7ecd694fa9ea49","cross_cats_sorted":["cond-mat.str-el","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2013-11-05T09:54:10Z","title_canon_sha256":"2aaf11968069f5404060f022b786d62b08ea9cba3f00794d7b353d9c12bb599c"},"schema_version":"1.0","source":{"id":"1311.1000","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.1000","created_at":"2026-05-18T02:54:56Z"},{"alias_kind":"arxiv_version","alias_value":"1311.1000v2","created_at":"2026-05-18T02:54:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.1000","created_at":"2026-05-18T02:54:56Z"},{"alias_kind":"pith_short_12","alias_value":"7QLBNBINEGJS","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_16","alias_value":"7QLBNBINEGJSO2E2","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_8","alias_value":"7QLBNBIN","created_at":"2026-05-18T12:27:36Z"}],"graph_snapshots":[{"event_id":"sha256:844e25810a8f6e2eede9e8390e54609158464dd0ae48570c792aaf37d471fcb0","target":"graph","created_at":"2026-05-18T02:54:56Z","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":"We determine the thermodynamic properties and the spectral function for a homogeneous two-dimensional Fermi gas in the normal state using the Luttinger-Ward, or self-consistent T-matrix, approach. The density equation of state deviates strongly from that of the ideal Fermi gas even for moderate interactions, and our calculations suggest that temperature has a pronounced effect on the pressure in the crossover from weak to strong coupling, consistent with recent experiments. We also compute the superfluid transition temperature for a finite system in the crossover region. There is a pronounced ","authors_text":"Marianne Bauer, Meera M. Parish, Tilman Enss","cross_cats":["cond-mat.str-el","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2013-11-05T09:54:10Z","title":"Universal equation of state and pseudogap in the two-dimensional Fermi gas"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.1000","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":"sha256:40baf7a639d4ddba9201df1c417bc4be908e0051d860b86a8ab013bec2c7dfb8","target":"record","created_at":"2026-05-18T02:54:56Z","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":"949bd18d962bc5d949f5a983153990d6d954db855e34bf2d3e7ecd694fa9ea49","cross_cats_sorted":["cond-mat.str-el","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2013-11-05T09:54:10Z","title_canon_sha256":"2aaf11968069f5404060f022b786d62b08ea9cba3f00794d7b353d9c12bb599c"},"schema_version":"1.0","source":{"id":"1311.1000","kind":"arxiv","version":2}},"canonical_sha256":"fc1616850d219327689a620b2900c6da5f4354a896614d390d0479a92c5bd7ee","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fc1616850d219327689a620b2900c6da5f4354a896614d390d0479a92c5bd7ee","first_computed_at":"2026-05-18T02:54:56.029109Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:54:56.029109Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lbhEp1d1AQ5lKV6gN4GvVEFFNWVmYcq4fznn66IbeXRoCUJkKueNH/44h4emZRBCsgl/uo2EPKa7rCA0X2pgCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:54:56.029807Z","signed_message":"canonical_sha256_bytes"},"source_id":"1311.1000","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:40baf7a639d4ddba9201df1c417bc4be908e0051d860b86a8ab013bec2c7dfb8","sha256:844e25810a8f6e2eede9e8390e54609158464dd0ae48570c792aaf37d471fcb0"],"state_sha256":"03449358e2e88f9aed34912b50b124c1bee0c399981af2ff129ca7b8f8608392"}