{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:EKVMYBJPQ4BRDVY5Y63D7Z5CD2","short_pith_number":"pith:EKVMYBJP","canonical_record":{"source":{"id":"2412.06548","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2024-12-09T14:58:26Z","cross_cats_sorted":[],"title_canon_sha256":"97ea6c8372f9a5e6e62c6f705f6ce1710a0453429da850d87c8f7e64be7f1674","abstract_canon_sha256":"15f7c035fc2a369fba38c3b355676c56778d8f88b3c280cf802e1f4d8c894e8c"},"schema_version":"1.0"},"canonical_sha256":"22aacc052f870311d71dc7b63fe7a21e9700189c77350698cab6055a3f683cba","source":{"kind":"arxiv","id":"2412.06548","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2412.06548","created_at":"2026-07-05T11:34:02Z"},{"alias_kind":"arxiv_version","alias_value":"2412.06548v2","created_at":"2026-07-05T11:34:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2412.06548","created_at":"2026-07-05T11:34:02Z"},{"alias_kind":"pith_short_12","alias_value":"EKVMYBJPQ4BR","created_at":"2026-07-05T11:34:02Z"},{"alias_kind":"pith_short_16","alias_value":"EKVMYBJPQ4BRDVY5","created_at":"2026-07-05T11:34:02Z"},{"alias_kind":"pith_short_8","alias_value":"EKVMYBJP","created_at":"2026-07-05T11:34:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:EKVMYBJPQ4BRDVY5Y63D7Z5CD2","target":"record","payload":{"canonical_record":{"source":{"id":"2412.06548","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2024-12-09T14:58:26Z","cross_cats_sorted":[],"title_canon_sha256":"97ea6c8372f9a5e6e62c6f705f6ce1710a0453429da850d87c8f7e64be7f1674","abstract_canon_sha256":"15f7c035fc2a369fba38c3b355676c56778d8f88b3c280cf802e1f4d8c894e8c"},"schema_version":"1.0"},"canonical_sha256":"22aacc052f870311d71dc7b63fe7a21e9700189c77350698cab6055a3f683cba","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:34:02.652445Z","signature_b64":"G+OLfVL+P2GACNMInJm0HFz3exd27aRx5CE1hOUZCGv/IKVN+yOjs07/z0LkUQMY1U4bZG8HM27cFbjQn71mDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"22aacc052f870311d71dc7b63fe7a21e9700189c77350698cab6055a3f683cba","last_reissued_at":"2026-07-05T11:34:02.652023Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:34:02.652023Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2412.06548","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:34:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qeR/1T7tFlWPLvc5kazlQHKbk4jnPZYnHbsQJuY2+iuI0WlcD+dNOwrsDEofnI11AUqen6HMlrLUTycKu87ZDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T02:51:11.053221Z"},"content_sha256":"460c34778d8f1a26185f82b6e0c862df90cf9afd5570c6e1707d24692ddbd4b9","schema_version":"1.0","event_id":"sha256:460c34778d8f1a26185f82b6e0c862df90cf9afd5570c6e1707d24692ddbd4b9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:EKVMYBJPQ4BRDVY5Y63D7Z5CD2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Evidence for Exceptional Points as Topological Defects","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Chia-Yi Ju, Szu-Ming Chen","submitted_at":"2024-12-09T14:58:26Z","abstract_excerpt":"Studies have shown that quantum states reside in a Hilbert space bundle. When a quantum system depends on continuous external parameters, these parameters define additional dimensions in the base space of the bundle. While much of the existing literature focuses on eigenstate subbundles, where geometric properties like Berry curvature arise, this work considers the entire Hilbert space bundle. Although the Hilbert space bundle has been found to be locally flat, suggesting that the system's geometry may appear trivial, we revisit this assumption. Specifically, we examine how an arbitrary quantu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.06548","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/2412.06548/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":"2026-07-05T11:34:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1QG3hNs3BZ6YA4t6HbFoyxPU/z7mfSCc2sG+DbjF0t1kn3Hvq4sa+b/K/NUDIrslrJrhzfJ5nK0vKgEyJDveCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T02:51:11.053597Z"},"content_sha256":"95846b0705c0c579ea1b849a2e8e3082ab2a41b53a9db2ac9d4a85dd3ec0f829","schema_version":"1.0","event_id":"sha256:95846b0705c0c579ea1b849a2e8e3082ab2a41b53a9db2ac9d4a85dd3ec0f829"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EKVMYBJPQ4BRDVY5Y63D7Z5CD2/bundle.json","state_url":"https://pith.science/pith/EKVMYBJPQ4BRDVY5Y63D7Z5CD2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EKVMYBJPQ4BRDVY5Y63D7Z5CD2/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":"2026-08-13T02:51:11Z","links":{"resolver":"https://pith.science/pith/EKVMYBJPQ4BRDVY5Y63D7Z5CD2","bundle":"https://pith.science/pith/EKVMYBJPQ4BRDVY5Y63D7Z5CD2/bundle.json","state":"https://pith.science/pith/EKVMYBJPQ4BRDVY5Y63D7Z5CD2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EKVMYBJPQ4BRDVY5Y63D7Z5CD2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:EKVMYBJPQ4BRDVY5Y63D7Z5CD2","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":"15f7c035fc2a369fba38c3b355676c56778d8f88b3c280cf802e1f4d8c894e8c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2024-12-09T14:58:26Z","title_canon_sha256":"97ea6c8372f9a5e6e62c6f705f6ce1710a0453429da850d87c8f7e64be7f1674"},"schema_version":"1.0","source":{"id":"2412.06548","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2412.06548","created_at":"2026-07-05T11:34:02Z"},{"alias_kind":"arxiv_version","alias_value":"2412.06548v2","created_at":"2026-07-05T11:34:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2412.06548","created_at":"2026-07-05T11:34:02Z"},{"alias_kind":"pith_short_12","alias_value":"EKVMYBJPQ4BR","created_at":"2026-07-05T11:34:02Z"},{"alias_kind":"pith_short_16","alias_value":"EKVMYBJPQ4BRDVY5","created_at":"2026-07-05T11:34:02Z"},{"alias_kind":"pith_short_8","alias_value":"EKVMYBJP","created_at":"2026-07-05T11:34:02Z"}],"graph_snapshots":[{"event_id":"sha256:95846b0705c0c579ea1b849a2e8e3082ab2a41b53a9db2ac9d4a85dd3ec0f829","target":"graph","created_at":"2026-07-05T11:34:02Z","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/2412.06548/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Studies have shown that quantum states reside in a Hilbert space bundle. When a quantum system depends on continuous external parameters, these parameters define additional dimensions in the base space of the bundle. While much of the existing literature focuses on eigenstate subbundles, where geometric properties like Berry curvature arise, this work considers the entire Hilbert space bundle. Although the Hilbert space bundle has been found to be locally flat, suggesting that the system's geometry may appear trivial, we revisit this assumption. Specifically, we examine how an arbitrary quantu","authors_text":"Chia-Yi Ju, Szu-Ming Chen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2024-12-09T14:58:26Z","title":"Evidence for Exceptional Points as Topological Defects"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.06548","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":"sha256:460c34778d8f1a26185f82b6e0c862df90cf9afd5570c6e1707d24692ddbd4b9","target":"record","created_at":"2026-07-05T11:34:02Z","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":"15f7c035fc2a369fba38c3b355676c56778d8f88b3c280cf802e1f4d8c894e8c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2024-12-09T14:58:26Z","title_canon_sha256":"97ea6c8372f9a5e6e62c6f705f6ce1710a0453429da850d87c8f7e64be7f1674"},"schema_version":"1.0","source":{"id":"2412.06548","kind":"arxiv","version":2}},"canonical_sha256":"22aacc052f870311d71dc7b63fe7a21e9700189c77350698cab6055a3f683cba","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"22aacc052f870311d71dc7b63fe7a21e9700189c77350698cab6055a3f683cba","first_computed_at":"2026-07-05T11:34:02.652023Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:34:02.652023Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"G+OLfVL+P2GACNMInJm0HFz3exd27aRx5CE1hOUZCGv/IKVN+yOjs07/z0LkUQMY1U4bZG8HM27cFbjQn71mDA==","signature_status":"signed_v1","signed_at":"2026-07-05T11:34:02.652445Z","signed_message":"canonical_sha256_bytes"},"source_id":"2412.06548","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:460c34778d8f1a26185f82b6e0c862df90cf9afd5570c6e1707d24692ddbd4b9","sha256:95846b0705c0c579ea1b849a2e8e3082ab2a41b53a9db2ac9d4a85dd3ec0f829"],"state_sha256":"8f0bd1e8036b05cdc3c6a57c6bc78db01874f4d8340336c32c8a47c01bdf7939"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mFiq/ZlLLl3aapJoJqyCzy5Pgg/BHQ0/RbqXS9+WjSiFVeXZ0Q+3zdLBorovM3wmj327Rm4wFE4VpDy/6IabBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-13T02:51:11.056470Z","bundle_sha256":"bbb4df49b31cd1e60c31cfecc3056344da03778cba7c762f7cef1e21b14e48b5"}}