{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:O6NYG5MZBT5GDKQ7YZWYSMWTOL","short_pith_number":"pith:O6NYG5MZ","schema_version":"1.0","canonical_sha256":"779b8375990cfa61aa1fc66d8932d372e8b3a2019faf73535fd7194b0c19fee3","source":{"kind":"arxiv","id":"2602.00486","version":2},"attestation_state":"computed","paper":{"title":"Higher-order Liouvillian exceptional points in the dissipative dynamics of quadratic fermions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Mingtao Xu, Wei Yi","submitted_at":"2026-01-31T03:15:32Z","abstract_excerpt":"We propose a general class of open fermionic models where quadratic Liouvillians governing the dissipative dynamics feature analytically characterized higher-order exceptional points (EPs). Invoking the formalism of third quantization, we show that, among the multiple EPs of Liouvillian, an EP with its order approaching the system size arises as the dominant modes of the system at long times, leading to a gapless Liouvillian spectrum. By introducing perturbations, in the form of many-body quantum-jump processes, these higher-order EPs break down, leading to finite Liouvillian gaps with fractio"},"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":"2602.00486","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2026-01-31T03:15:32Z","cross_cats_sorted":[],"title_canon_sha256":"0f7e864edcf19be15cc418b2c44d02e03ced04cbb6cca720984d085cc499d069","abstract_canon_sha256":"a184a1d69befa5ac6cadc3856514ce4beb58a89a200bcc6476eefc8456cc253e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-21T01:20:43.217633Z","signature_b64":"RQ4UVvcSfwlFZSrzlemCOKoJIEkfWcyd94LwVBpiMaU00ru7QwL8+E5Ca83SramNQ40ykPnKygWMC71mbBWQAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"779b8375990cfa61aa1fc66d8932d372e8b3a2019faf73535fd7194b0c19fee3","last_reissued_at":"2026-07-21T01:20:43.216726Z","signature_status":"signed_v1","first_computed_at":"2026-07-21T01:20:43.216726Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Higher-order Liouvillian exceptional points in the dissipative dynamics of quadratic fermions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Mingtao Xu, Wei Yi","submitted_at":"2026-01-31T03:15:32Z","abstract_excerpt":"We propose a general class of open fermionic models where quadratic Liouvillians governing the dissipative dynamics feature analytically characterized higher-order exceptional points (EPs). Invoking the formalism of third quantization, we show that, among the multiple EPs of Liouvillian, an EP with its order approaching the system size arises as the dominant modes of the system at long times, leading to a gapless Liouvillian spectrum. By introducing perturbations, in the form of many-body quantum-jump processes, these higher-order EPs break down, leading to finite Liouvillian gaps with fractio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2602.00486","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2602.00486/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":"2602.00486","created_at":"2026-07-21T01:20:43.217137+00:00"},{"alias_kind":"arxiv_version","alias_value":"2602.00486v2","created_at":"2026-07-21T01:20:43.217137+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2602.00486","created_at":"2026-07-21T01:20:43.217137+00:00"},{"alias_kind":"pith_short_12","alias_value":"O6NYG5MZBT5G","created_at":"2026-07-21T01:20:43.217137+00:00"},{"alias_kind":"pith_short_16","alias_value":"O6NYG5MZBT5GDKQ7","created_at":"2026-07-21T01:20:43.217137+00:00"},{"alias_kind":"pith_short_8","alias_value":"O6NYG5MZ","created_at":"2026-07-21T01:20:43.217137+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/O6NYG5MZBT5GDKQ7YZWYSMWTOL","json":"https://pith.science/pith/O6NYG5MZBT5GDKQ7YZWYSMWTOL.json","graph_json":"https://pith.science/api/pith-number/O6NYG5MZBT5GDKQ7YZWYSMWTOL/graph.json","events_json":"https://pith.science/api/pith-number/O6NYG5MZBT5GDKQ7YZWYSMWTOL/events.json","paper":"https://pith.science/paper/O6NYG5MZ"},"agent_actions":{"view_html":"https://pith.science/pith/O6NYG5MZBT5GDKQ7YZWYSMWTOL","download_json":"https://pith.science/pith/O6NYG5MZBT5GDKQ7YZWYSMWTOL.json","view_paper":"https://pith.science/paper/O6NYG5MZ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2602.00486&json=true","fetch_graph":"https://pith.science/api/pith-number/O6NYG5MZBT5GDKQ7YZWYSMWTOL/graph.json","fetch_events":"https://pith.science/api/pith-number/O6NYG5MZBT5GDKQ7YZWYSMWTOL/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/O6NYG5MZBT5GDKQ7YZWYSMWTOL/action/timestamp_anchor","attest_storage":"https://pith.science/pith/O6NYG5MZBT5GDKQ7YZWYSMWTOL/action/storage_attestation","attest_author":"https://pith.science/pith/O6NYG5MZBT5GDKQ7YZWYSMWTOL/action/author_attestation","sign_citation":"https://pith.science/pith/O6NYG5MZBT5GDKQ7YZWYSMWTOL/action/citation_signature","submit_replication":"https://pith.science/pith/O6NYG5MZBT5GDKQ7YZWYSMWTOL/action/replication_record"}},"created_at":"2026-07-21T01:20:43.217137+00:00","updated_at":"2026-07-21T01:20:43.217137+00:00"}