{"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"}