{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:AFL2SAUG4CPRK3EV2NCUHEDQYA","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":"8091b48c5991ba6b2591ead34cd9a946baad739608cefb3b81742f86a16a4565","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2009-09-12T06:47:52Z","title_canon_sha256":"24c5bbfb2ca050c025a35750f8b4b545d2d02164deccfa093e77aa16e27c885e"},"schema_version":"1.0","source":{"id":"0909.2308","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0909.2308","created_at":"2026-05-18T04:19:41Z"},{"alias_kind":"arxiv_version","alias_value":"0909.2308v1","created_at":"2026-05-18T04:19:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.2308","created_at":"2026-05-18T04:19:41Z"},{"alias_kind":"pith_short_12","alias_value":"AFL2SAUG4CPR","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"AFL2SAUG4CPRK3EV","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"AFL2SAUG","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:24b17115717def91bcd658515ee69e19d6201ed0620aad4d9210d143e7d0a76a","target":"graph","created_at":"2026-05-18T04:19:41Z","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 study the doping evolution of the electronic structure in the normal phase of high-$T_c$ cuprates. Electronic structure and Fermi surface of cuprates with single CuO$_2$ layer in the unit cell like La$_{2-x}$Sr$_x$CuO$_4$ have been calculated by the LDA+GTB method in the regime of strong electron correlations (SEC) and compared to ARPES and quantum oscillations data. We have found two critical concentrations, $x_{c1}$ and $x_{c2}$, where the Fermi surface topology changes. Following I.M. Lifshitz ideas of the quantum phase transitions (QPT) of the 2.5-order we discuss the concentration depe","authors_text":"E.I. Shneyder, M.M. Korshunov, S.G. Ovchinnikov","cross_cats":["cond-mat.supr-con"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2009-09-12T06:47:52Z","title":"Lifshitz quantum phase transitions and Fermi surface transformation with hole doping in high-$T_c$ superconductors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.2308","kind":"arxiv","version":1},"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":"sha256:7ce2c203144d3f95f820349f291de5e7dccee7ad02debfcbc97515b6067fd734","target":"record","created_at":"2026-05-18T04:19:41Z","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":"8091b48c5991ba6b2591ead34cd9a946baad739608cefb3b81742f86a16a4565","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2009-09-12T06:47:52Z","title_canon_sha256":"24c5bbfb2ca050c025a35750f8b4b545d2d02164deccfa093e77aa16e27c885e"},"schema_version":"1.0","source":{"id":"0909.2308","kind":"arxiv","version":1}},"canonical_sha256":"0157a90286e09f156c95d345439070c024004da787f9cff7ce5697b51d75f950","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0157a90286e09f156c95d345439070c024004da787f9cff7ce5697b51d75f950","first_computed_at":"2026-05-18T04:19:41.335689Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:19:41.335689Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XM6uPDNFZZtHxOjAbCrFWWqxabin/O+tB/EahzxUDsg9Ii1IvLQ7LZPTMF41m7NH0GbZSZZ5emb3DnGtJ1vSBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:19:41.336179Z","signed_message":"canonical_sha256_bytes"},"source_id":"0909.2308","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7ce2c203144d3f95f820349f291de5e7dccee7ad02debfcbc97515b6067fd734","sha256:24b17115717def91bcd658515ee69e19d6201ed0620aad4d9210d143e7d0a76a"],"state_sha256":"4459f1c8de7b8b32b3c995ef45968dd9694d1524f9acbf74fdf29918c4387252"}