{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:3E6XMAF35WG7NHKHYKDUOG3G47","short_pith_number":"pith:3E6XMAF3","schema_version":"1.0","canonical_sha256":"d93d7600bbed8df69d47c287471b66e7e18a21a8b29f559cd07a50c2cc162380","source":{"kind":"arxiv","id":"2103.05009","version":4},"attestation_state":"computed","paper":{"title":"Small to large Fermi surface transition in a single band model, using randomly coupled ancillas","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th"],"primary_cat":"cond-mat.str-el","authors_text":"Alexander Nikolaenko, Maria Tikhanovskaya, Subir Sachdev, Ya-Hui Zhang","submitted_at":"2021-03-08T19:00:03Z","abstract_excerpt":"We describe a solvable model of a quantum transition in a single band model involving a change in the size of the electron Fermi surface without any symmetry breaking. In a model with electron density $1-p$, we find a 'large' Fermi surface state with the conventional Luttinger volume $1-p$ of electrons for $p>p_c$, and a first order transition to a 'small' Fermi surface state with a non-Luttinger volume $p$ of holes for $p<p_c$. As required by extended Luttinger theorems, the small Fermi surface state also has fractionalized spinon excitations. The model has electrons with strong local interac"},"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":"2103.05009","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2021-03-08T19:00:03Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"546ddd777b05a2d160e60a3ec31c977067da5e03c5baa0b658385cddec14bb46","abstract_canon_sha256":"f6528c13807c520b20b2e83151728c952444e165874195c2aaac2b649c7df885"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:51:19.600864Z","signature_b64":"oGQJgrlkncN8HXy1OwAqWpki8XsAA0F1NgMu4zGCLkG0tIyPIwDI9ugWEDow4pVghXobONiDf9r+7mlKEwfGAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d93d7600bbed8df69d47c287471b66e7e18a21a8b29f559cd07a50c2cc162380","last_reissued_at":"2026-07-05T02:51:19.600395Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:51:19.600395Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Small to large Fermi surface transition in a single band model, using randomly coupled ancillas","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th"],"primary_cat":"cond-mat.str-el","authors_text":"Alexander Nikolaenko, Maria Tikhanovskaya, Subir Sachdev, Ya-Hui Zhang","submitted_at":"2021-03-08T19:00:03Z","abstract_excerpt":"We describe a solvable model of a quantum transition in a single band model involving a change in the size of the electron Fermi surface without any symmetry breaking. In a model with electron density $1-p$, we find a 'large' Fermi surface state with the conventional Luttinger volume $1-p$ of electrons for $p>p_c$, and a first order transition to a 'small' Fermi surface state with a non-Luttinger volume $p$ of holes for $p<p_c$. As required by extended Luttinger theorems, the small Fermi surface state also has fractionalized spinon excitations. The model has electrons with strong local interac"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.05009","kind":"arxiv","version":4},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2103.05009/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2103.05009","created_at":"2026-07-05T02:51:19.600454+00:00"},{"alias_kind":"arxiv_version","alias_value":"2103.05009v4","created_at":"2026-07-05T02:51:19.600454+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2103.05009","created_at":"2026-07-05T02:51:19.600454+00:00"},{"alias_kind":"pith_short_12","alias_value":"3E6XMAF35WG7","created_at":"2026-07-05T02:51:19.600454+00:00"},{"alias_kind":"pith_short_16","alias_value":"3E6XMAF35WG7NHKH","created_at":"2026-07-05T02:51:19.600454+00:00"},{"alias_kind":"pith_short_8","alias_value":"3E6XMAF3","created_at":"2026-07-05T02:51:19.600454+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":2,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2507.05336","citing_title":"Thermal SU(2) lattice gauge theory for intertwined orders and hole pockets in the cuprates","ref_index":105,"is_internal_anchor":false},{"citing_arxiv_id":"2508.20164","citing_title":"Fractionalized Fermi liquids and the cuprate phase diagram","ref_index":152,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/3E6XMAF35WG7NHKHYKDUOG3G47","json":"https://pith.science/pith/3E6XMAF35WG7NHKHYKDUOG3G47.json","graph_json":"https://pith.science/api/pith-number/3E6XMAF35WG7NHKHYKDUOG3G47/graph.json","events_json":"https://pith.science/api/pith-number/3E6XMAF35WG7NHKHYKDUOG3G47/events.json","paper":"https://pith.science/paper/3E6XMAF3"},"agent_actions":{"view_html":"https://pith.science/pith/3E6XMAF35WG7NHKHYKDUOG3G47","download_json":"https://pith.science/pith/3E6XMAF35WG7NHKHYKDUOG3G47.json","view_paper":"https://pith.science/paper/3E6XMAF3","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2103.05009&json=true","fetch_graph":"https://pith.science/api/pith-number/3E6XMAF35WG7NHKHYKDUOG3G47/graph.json","fetch_events":"https://pith.science/api/pith-number/3E6XMAF35WG7NHKHYKDUOG3G47/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/3E6XMAF35WG7NHKHYKDUOG3G47/action/timestamp_anchor","attest_storage":"https://pith.science/pith/3E6XMAF35WG7NHKHYKDUOG3G47/action/storage_attestation","attest_author":"https://pith.science/pith/3E6XMAF35WG7NHKHYKDUOG3G47/action/author_attestation","sign_citation":"https://pith.science/pith/3E6XMAF35WG7NHKHYKDUOG3G47/action/citation_signature","submit_replication":"https://pith.science/pith/3E6XMAF35WG7NHKHYKDUOG3G47/action/replication_record"}},"created_at":"2026-07-05T02:51:19.600454+00:00","updated_at":"2026-07-05T02:51:19.600454+00:00"}