{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:RJBXVMRMOPUYRWIL7LCJD2USDB","short_pith_number":"pith:RJBXVMRM","canonical_record":{"source":{"id":"1709.03584","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-09-08T13:29:06Z","cross_cats_sorted":["nlin.CD"],"title_canon_sha256":"20829ec615737126f3b39a51c1f26351fb2eaa47a5d63bcb3bd84af80e70e947","abstract_canon_sha256":"2d16d820ce53141313a08ea9dbde8397a38e5f3c489b4e1430afdeb55c35c449"},"schema_version":"1.0"},"canonical_sha256":"8a437ab22c73e988d90bfac491ea921849b9184ecbda719fc6cb6a7a95d29047","source":{"kind":"arxiv","id":"1709.03584","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.03584","created_at":"2026-05-18T00:28:01Z"},{"alias_kind":"arxiv_version","alias_value":"1709.03584v3","created_at":"2026-05-18T00:28:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.03584","created_at":"2026-05-18T00:28:01Z"},{"alias_kind":"pith_short_12","alias_value":"RJBXVMRMOPUY","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_16","alias_value":"RJBXVMRMOPUYRWIL","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_8","alias_value":"RJBXVMRM","created_at":"2026-05-18T12:31:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:RJBXVMRMOPUYRWIL7LCJD2USDB","target":"record","payload":{"canonical_record":{"source":{"id":"1709.03584","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-09-08T13:29:06Z","cross_cats_sorted":["nlin.CD"],"title_canon_sha256":"20829ec615737126f3b39a51c1f26351fb2eaa47a5d63bcb3bd84af80e70e947","abstract_canon_sha256":"2d16d820ce53141313a08ea9dbde8397a38e5f3c489b4e1430afdeb55c35c449"},"schema_version":"1.0"},"canonical_sha256":"8a437ab22c73e988d90bfac491ea921849b9184ecbda719fc6cb6a7a95d29047","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:28:01.944185Z","signature_b64":"60+rl/jKf628SeGuwJFF19eDIZEFid0Hmx8Z26pg7XlH3Om7a7QOl+Uo24owBQWUrYRBLN3UDfgnxPsTbJ9XDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8a437ab22c73e988d90bfac491ea921849b9184ecbda719fc6cb6a7a95d29047","last_reissued_at":"2026-05-18T00:28:01.943564Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:28:01.943564Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1709.03584","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":"2026-05-18T00:28:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lH/FjybRogeGCetsbdAesBcn9WnvXMDp9tDYnUUm1YSYgkkfaB3butcQZshYF9eXuGmnrli6xlRzUdpELTyQCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T06:31:53.243254Z"},"content_sha256":"7e92af0460f6a1685dc36108140caf80afc1a6e15f861e81dc2062eaceae3ea1","schema_version":"1.0","event_id":"sha256:7e92af0460f6a1685dc36108140caf80afc1a6e15f861e81dc2062eaceae3ea1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:RJBXVMRMOPUYRWIL7LCJD2USDB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum chaos for nonstandard symmetry classes in the Feingold-Peres model of coupled tops","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nlin.CD"],"primary_cat":"quant-ph","authors_text":"Sven Gnutzmann, Yiyun Fan, Yuqi Liang","submitted_at":"2017-09-08T13:29:06Z","abstract_excerpt":"We consider two coupled quantum tops with angular momentum vectors $\\mathbf{L}$ and $\\mathbf{M}$. The coupling Hamiltonian defines the Feinberg-Peres model which is a known paradigm of quantum chaos. We show that this model has a nonstandard symmetry with respect to the Altland-Zirnbauer tenfold symmetry classification of quantum systems which extends the well-known threefold way of Wigner and Dyson (referred to as `standard' symmetry classes here). We identify that the nonstandard symmetry classes BD$I_0$ (chiral orthogonal class with no zero modes), BD$I_1$ (chiral orthogonal class with one "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.03584","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":""},"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":"2026-05-18T00:28:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Kb2dJPLDUjGF4BLRC/4y9kp2pXj8lcKDTjvFtFH0Ak+IU5Nu9Jz27RF4UIkesRD8WGHOkHKp3AW2zGGx9uPCCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T06:31:53.243626Z"},"content_sha256":"fd5472bd039b8b8f83e83b7d1944acf57cc0175d42ab3263c0e5e6da96e61a06","schema_version":"1.0","event_id":"sha256:fd5472bd039b8b8f83e83b7d1944acf57cc0175d42ab3263c0e5e6da96e61a06"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RJBXVMRMOPUYRWIL7LCJD2USDB/bundle.json","state_url":"https://pith.science/pith/RJBXVMRMOPUYRWIL7LCJD2USDB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RJBXVMRMOPUYRWIL7LCJD2USDB/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":"2026-05-25T06:31:53Z","links":{"resolver":"https://pith.science/pith/RJBXVMRMOPUYRWIL7LCJD2USDB","bundle":"https://pith.science/pith/RJBXVMRMOPUYRWIL7LCJD2USDB/bundle.json","state":"https://pith.science/pith/RJBXVMRMOPUYRWIL7LCJD2USDB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RJBXVMRMOPUYRWIL7LCJD2USDB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:RJBXVMRMOPUYRWIL7LCJD2USDB","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":"2d16d820ce53141313a08ea9dbde8397a38e5f3c489b4e1430afdeb55c35c449","cross_cats_sorted":["nlin.CD"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-09-08T13:29:06Z","title_canon_sha256":"20829ec615737126f3b39a51c1f26351fb2eaa47a5d63bcb3bd84af80e70e947"},"schema_version":"1.0","source":{"id":"1709.03584","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.03584","created_at":"2026-05-18T00:28:01Z"},{"alias_kind":"arxiv_version","alias_value":"1709.03584v3","created_at":"2026-05-18T00:28:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.03584","created_at":"2026-05-18T00:28:01Z"},{"alias_kind":"pith_short_12","alias_value":"RJBXVMRMOPUY","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_16","alias_value":"RJBXVMRMOPUYRWIL","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_8","alias_value":"RJBXVMRM","created_at":"2026-05-18T12:31:39Z"}],"graph_snapshots":[{"event_id":"sha256:fd5472bd039b8b8f83e83b7d1944acf57cc0175d42ab3263c0e5e6da96e61a06","target":"graph","created_at":"2026-05-18T00:28:01Z","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 consider two coupled quantum tops with angular momentum vectors $\\mathbf{L}$ and $\\mathbf{M}$. The coupling Hamiltonian defines the Feinberg-Peres model which is a known paradigm of quantum chaos. We show that this model has a nonstandard symmetry with respect to the Altland-Zirnbauer tenfold symmetry classification of quantum systems which extends the well-known threefold way of Wigner and Dyson (referred to as `standard' symmetry classes here). We identify that the nonstandard symmetry classes BD$I_0$ (chiral orthogonal class with no zero modes), BD$I_1$ (chiral orthogonal class with one ","authors_text":"Sven Gnutzmann, Yiyun Fan, Yuqi Liang","cross_cats":["nlin.CD"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-09-08T13:29:06Z","title":"Quantum chaos for nonstandard symmetry classes in the Feingold-Peres model of coupled tops"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.03584","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":"sha256:7e92af0460f6a1685dc36108140caf80afc1a6e15f861e81dc2062eaceae3ea1","target":"record","created_at":"2026-05-18T00:28:01Z","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":"2d16d820ce53141313a08ea9dbde8397a38e5f3c489b4e1430afdeb55c35c449","cross_cats_sorted":["nlin.CD"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-09-08T13:29:06Z","title_canon_sha256":"20829ec615737126f3b39a51c1f26351fb2eaa47a5d63bcb3bd84af80e70e947"},"schema_version":"1.0","source":{"id":"1709.03584","kind":"arxiv","version":3}},"canonical_sha256":"8a437ab22c73e988d90bfac491ea921849b9184ecbda719fc6cb6a7a95d29047","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8a437ab22c73e988d90bfac491ea921849b9184ecbda719fc6cb6a7a95d29047","first_computed_at":"2026-05-18T00:28:01.943564Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:28:01.943564Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"60+rl/jKf628SeGuwJFF19eDIZEFid0Hmx8Z26pg7XlH3Om7a7QOl+Uo24owBQWUrYRBLN3UDfgnxPsTbJ9XDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:28:01.944185Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.03584","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7e92af0460f6a1685dc36108140caf80afc1a6e15f861e81dc2062eaceae3ea1","sha256:fd5472bd039b8b8f83e83b7d1944acf57cc0175d42ab3263c0e5e6da96e61a06"],"state_sha256":"e3a8d84fa506e2c492be7f3cbe9b8f34e427269a96a86b84b02fe3686db97775"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2t2ffB9cyz612fZApEUV0PmU8jX/nQusH3mfOBc4sfqJGV7r5ZPX1w3hSaI42ao2PREPSSHHp7YqBOCDbph0AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T06:31:53.246791Z","bundle_sha256":"ffd8f0f44b83b41f3121f0e87fb0f8a1d8f1347c4fd58a326cbf1b846f491cf3"}}