{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:XGIRJUNLIEKZMZOULRI7FCXEAV","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":"115bda836d2fda8efe6545cfca544657d3749a55b992778c0439594746edbd35","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.gen-ph","submitted_at":"2019-01-31T23:52:25Z","title_canon_sha256":"91c93af0b17c91157e248247d5dad72ca13963f2fae0eedf5964738871c8b14a"},"schema_version":"1.0","source":{"id":"1902.00136","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.00136","created_at":"2026-05-17T23:51:52Z"},{"alias_kind":"arxiv_version","alias_value":"1902.00136v2","created_at":"2026-05-17T23:51:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.00136","created_at":"2026-05-17T23:51:52Z"},{"alias_kind":"pith_short_12","alias_value":"XGIRJUNLIEKZ","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"XGIRJUNLIEKZMZOU","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"XGIRJUNL","created_at":"2026-05-18T12:33:33Z"}],"graph_snapshots":[{"event_id":"sha256:1ee2d60d02761ef278ccab5e261d919716dd5a43f3eaadc15a6f74c522dc4788","target":"graph","created_at":"2026-05-17T23:51:52Z","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":"The eigenstates and eigenenergies of a toy model, which arose in idealizing a local quenched tight-binding model in a previous publication [Zhang and Yang, EPL 114, 60001 (2016)], are solved analytically. This enables us to study its dynamics in a different way. This model can serve as a good exercise in quantum mechanics at the undergraduate level.","authors_text":"J. M. Zhang, K. L. Yang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.gen-ph","submitted_at":"2019-01-31T23:52:25Z","title":"On an exactly solvable toy model and its dynamics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.00136","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:bc10d7d47519229252d7a5b67547ac5e1a353c2e904560e6f82430499c274f40","target":"record","created_at":"2026-05-17T23:51:52Z","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":"115bda836d2fda8efe6545cfca544657d3749a55b992778c0439594746edbd35","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.gen-ph","submitted_at":"2019-01-31T23:52:25Z","title_canon_sha256":"91c93af0b17c91157e248247d5dad72ca13963f2fae0eedf5964738871c8b14a"},"schema_version":"1.0","source":{"id":"1902.00136","kind":"arxiv","version":2}},"canonical_sha256":"b99114d1ab41159665d45c51f28ae4057ff24e6e2048201fe4fa7e9d728ccfc6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b99114d1ab41159665d45c51f28ae4057ff24e6e2048201fe4fa7e9d728ccfc6","first_computed_at":"2026-05-17T23:51:52.110306Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:51:52.110306Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KG4G+xkA+xlPseNd5gAgzsTkw/O+ykixcD6diVKT5cJgTFLFBjAaRSRLCV01ZM4wuy0pEF44AjeiUKXYXhcCDw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:51:52.110949Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.00136","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bc10d7d47519229252d7a5b67547ac5e1a353c2e904560e6f82430499c274f40","sha256:1ee2d60d02761ef278ccab5e261d919716dd5a43f3eaadc15a6f74c522dc4788"],"state_sha256":"ca3a256e84a6f44abaf4d0a143f481df101b48e5933742f882c8a79cc8c0dd52"}