{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:G5CB6AJK4LFMRRSYUBE5ELEQMI","short_pith_number":"pith:G5CB6AJK","canonical_record":{"source":{"id":"2208.14944","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-08-31T16:24:03Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"2fa0f241f462474d509b38e207cd6d2b12ea8b70875e5d6f2f598c504c412c18","abstract_canon_sha256":"deb1ff15efb18555e9b238c5b1d0f1f6d3a94edd49c957eea2f66ca565cc667d"},"schema_version":"1.0"},"canonical_sha256":"37441f012ae2cac8c658a049d22c906230dcc232f7faea16a1d067b711106339","source":{"kind":"arxiv","id":"2208.14944","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2208.14944","created_at":"2026-07-05T07:08:27Z"},{"alias_kind":"arxiv_version","alias_value":"2208.14944v3","created_at":"2026-07-05T07:08:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2208.14944","created_at":"2026-07-05T07:08:27Z"},{"alias_kind":"pith_short_12","alias_value":"G5CB6AJK4LFM","created_at":"2026-07-05T07:08:27Z"},{"alias_kind":"pith_short_16","alias_value":"G5CB6AJK4LFMRRSY","created_at":"2026-07-05T07:08:27Z"},{"alias_kind":"pith_short_8","alias_value":"G5CB6AJK","created_at":"2026-07-05T07:08:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:G5CB6AJK4LFMRRSYUBE5ELEQMI","target":"record","payload":{"canonical_record":{"source":{"id":"2208.14944","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-08-31T16:24:03Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"2fa0f241f462474d509b38e207cd6d2b12ea8b70875e5d6f2f598c504c412c18","abstract_canon_sha256":"deb1ff15efb18555e9b238c5b1d0f1f6d3a94edd49c957eea2f66ca565cc667d"},"schema_version":"1.0"},"canonical_sha256":"37441f012ae2cac8c658a049d22c906230dcc232f7faea16a1d067b711106339","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:08:27.333311Z","signature_b64":"nnSz4HQTvXRxStf0+ufoHRVKmxLjncEz8TL2s6Gcr/RFIjNL9RDvNS3VtXH2gafS3sgbt3Ft1aH4TVVivjsuAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"37441f012ae2cac8c658a049d22c906230dcc232f7faea16a1d067b711106339","last_reissued_at":"2026-07-05T07:08:27.332850Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:08:27.332850Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2208.14944","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T07:08:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"11QIwwdpCx/Adc+/3UwYYNjs2WdwxA1tKFsfpvMgo/ZaYxVy7eVbZLNskPhQDD/VhAQIXBxYv/ijHldGQCVzDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T18:36:59.193137Z"},"content_sha256":"84ada903c0221e4060ce549c2da4edd910507dcdfec2979ad0002daa5bbea828","schema_version":"1.0","event_id":"sha256:84ada903c0221e4060ce549c2da4edd910507dcdfec2979ad0002daa5bbea828"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:G5CB6AJK4LFMRRSYUBE5ELEQMI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Detecting bulk and edge exceptional points in non-Hermitian systems through generalized Petermann factors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"quant-ph","authors_text":"Li-Mei Chen, Peng Ye, Yao Zhou, Yue-Yu Zou","submitted_at":"2022-08-31T16:24:03Z","abstract_excerpt":"Non-orthogonality in non-Hermitian quantum systems gives rise to tremendous exotic quantum phenomena, which can be fundamentally traced back to non-unitarity and is much more fundamental and universal than complex energy spectrum. In this paper, we introduce an interesting quantity (denoted as $\\eta$) as a new variant of the Petermann factor to directly and efficiently measure non-unitarity and the associated non-Hermitian physics. By tuning the model parameters of underlying non-Hermitian systems, we find that the discontinuity of both $\\eta$ and its first-order derivative (denoted as $\\parti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2208.14944","kind":"arxiv","version":3},"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/2208.14944/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T07:08:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zZtIDjSg7+rcrFu+lnDZkU7iYTuV9Af3VrImVX2YZhr3EDQ31F/2xRSyLmcjjrrAku324Nn0/mXHaG7ihDq3Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T18:36:59.193948Z"},"content_sha256":"0ed73a36b0489a8a3a1365dfc7555cd3fa24874461d0378c3e0ee8c814d7284c","schema_version":"1.0","event_id":"sha256:0ed73a36b0489a8a3a1365dfc7555cd3fa24874461d0378c3e0ee8c814d7284c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/G5CB6AJK4LFMRRSYUBE5ELEQMI/bundle.json","state_url":"https://pith.science/pith/G5CB6AJK4LFMRRSYUBE5ELEQMI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/G5CB6AJK4LFMRRSYUBE5ELEQMI/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-23T18:36:59Z","links":{"resolver":"https://pith.science/pith/G5CB6AJK4LFMRRSYUBE5ELEQMI","bundle":"https://pith.science/pith/G5CB6AJK4LFMRRSYUBE5ELEQMI/bundle.json","state":"https://pith.science/pith/G5CB6AJK4LFMRRSYUBE5ELEQMI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/G5CB6AJK4LFMRRSYUBE5ELEQMI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:G5CB6AJK4LFMRRSYUBE5ELEQMI","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":"deb1ff15efb18555e9b238c5b1d0f1f6d3a94edd49c957eea2f66ca565cc667d","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-08-31T16:24:03Z","title_canon_sha256":"2fa0f241f462474d509b38e207cd6d2b12ea8b70875e5d6f2f598c504c412c18"},"schema_version":"1.0","source":{"id":"2208.14944","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2208.14944","created_at":"2026-07-05T07:08:27Z"},{"alias_kind":"arxiv_version","alias_value":"2208.14944v3","created_at":"2026-07-05T07:08:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2208.14944","created_at":"2026-07-05T07:08:27Z"},{"alias_kind":"pith_short_12","alias_value":"G5CB6AJK4LFM","created_at":"2026-07-05T07:08:27Z"},{"alias_kind":"pith_short_16","alias_value":"G5CB6AJK4LFMRRSY","created_at":"2026-07-05T07:08:27Z"},{"alias_kind":"pith_short_8","alias_value":"G5CB6AJK","created_at":"2026-07-05T07:08:27Z"}],"graph_snapshots":[{"event_id":"sha256:0ed73a36b0489a8a3a1365dfc7555cd3fa24874461d0378c3e0ee8c814d7284c","target":"graph","created_at":"2026-07-05T07:08:27Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2208.14944/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Non-orthogonality in non-Hermitian quantum systems gives rise to tremendous exotic quantum phenomena, which can be fundamentally traced back to non-unitarity and is much more fundamental and universal than complex energy spectrum. In this paper, we introduce an interesting quantity (denoted as $\\eta$) as a new variant of the Petermann factor to directly and efficiently measure non-unitarity and the associated non-Hermitian physics. By tuning the model parameters of underlying non-Hermitian systems, we find that the discontinuity of both $\\eta$ and its first-order derivative (denoted as $\\parti","authors_text":"Li-Mei Chen, Peng Ye, Yao Zhou, Yue-Yu Zou","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-08-31T16:24:03Z","title":"Detecting bulk and edge exceptional points in non-Hermitian systems through generalized Petermann factors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2208.14944","kind":"arxiv","version":3},"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":"sha256:84ada903c0221e4060ce549c2da4edd910507dcdfec2979ad0002daa5bbea828","target":"record","created_at":"2026-07-05T07:08:27Z","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":"deb1ff15efb18555e9b238c5b1d0f1f6d3a94edd49c957eea2f66ca565cc667d","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-08-31T16:24:03Z","title_canon_sha256":"2fa0f241f462474d509b38e207cd6d2b12ea8b70875e5d6f2f598c504c412c18"},"schema_version":"1.0","source":{"id":"2208.14944","kind":"arxiv","version":3}},"canonical_sha256":"37441f012ae2cac8c658a049d22c906230dcc232f7faea16a1d067b711106339","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"37441f012ae2cac8c658a049d22c906230dcc232f7faea16a1d067b711106339","first_computed_at":"2026-07-05T07:08:27.332850Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:08:27.332850Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nnSz4HQTvXRxStf0+ufoHRVKmxLjncEz8TL2s6Gcr/RFIjNL9RDvNS3VtXH2gafS3sgbt3Ft1aH4TVVivjsuAA==","signature_status":"signed_v1","signed_at":"2026-07-05T07:08:27.333311Z","signed_message":"canonical_sha256_bytes"},"source_id":"2208.14944","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:84ada903c0221e4060ce549c2da4edd910507dcdfec2979ad0002daa5bbea828","sha256:0ed73a36b0489a8a3a1365dfc7555cd3fa24874461d0378c3e0ee8c814d7284c"],"state_sha256":"926654c9e83877323438bb2e0515df76abe0446b5cdb5c1dd272c9d487c507ab"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dP7tzm36KPOMwc1BvX6qKjLQUjDSkqPzk1zNCGiuLJ9reo+N+ypquTHZP+F9YUiQ34iZietqWrBf6NcOhp5cDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-23T18:36:59.202387Z","bundle_sha256":"764556a80a6f63aab6d5e97bb238b26a400758a4baf2603b15b51940f22c6659"}}