{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:BXCQLXU7FVHVYR7VVH6SKWPOT5","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":"3ed2e54ded9b601b15d839c3a334e8d778d1f666efc669c360694d07c72c6341","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-08-03T15:47:52Z","title_canon_sha256":"e95f06bc97537566ab85d07d24f21a5d4392bceed4a827ef7e38b27fbe9a6199"},"schema_version":"1.0","source":{"id":"2608.02403","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.02403","created_at":"2026-08-04T02:12:08Z"},{"alias_kind":"arxiv_version","alias_value":"2608.02403v1","created_at":"2026-08-04T02:12:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.02403","created_at":"2026-08-04T02:12:08Z"},{"alias_kind":"pith_short_12","alias_value":"BXCQLXU7FVHV","created_at":"2026-08-04T02:12:08Z"},{"alias_kind":"pith_short_16","alias_value":"BXCQLXU7FVHVYR7V","created_at":"2026-08-04T02:12:08Z"},{"alias_kind":"pith_short_8","alias_value":"BXCQLXU7","created_at":"2026-08-04T02:12:08Z"}],"graph_snapshots":[{"event_id":"sha256:90d56f1a9d0a001c45104f7049cd557a0e37f5b4a9e951f59095f5b12fddf366","target":"graph","created_at":"2026-08-04T02:12:08Z","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/2608.02403/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Entanglement generation is a fundamental dynamical capability in quantum information science and underpins many quantum advantages. While quantum theory enables it through unitary dynamics, boxworld, a generalized probabilistic theory admitting Popescu--Rohrlich boxes with supraquantum correlations, has no reversible transformation capable of generating entanglement. We show that this no-go picture changes fundamentally once reversibility is relaxed to pure-state preservation. We construct a pure-state-preserving transformation that maps every uncorrelated pure state to a Popescu--Rohrlich box","authors_text":"Akihiro Hokkyo, Hayato Arai, Kazuaki Takasan, Shun Umekawa","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-08-03T15:47:52Z","title":"Entanglement Generation Beyond Quantum Theory: From Product States to Popescu-Rohrlich Boxes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.02403","kind":"arxiv","version":1},"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":"sha256:7ba105f7ec7d570a93fb81c1a02a024a29d12549c2a2ce3a9d7737075fd36be0","target":"record","created_at":"2026-08-04T02:12:08Z","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":"3ed2e54ded9b601b15d839c3a334e8d778d1f666efc669c360694d07c72c6341","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-08-03T15:47:52Z","title_canon_sha256":"e95f06bc97537566ab85d07d24f21a5d4392bceed4a827ef7e38b27fbe9a6199"},"schema_version":"1.0","source":{"id":"2608.02403","kind":"arxiv","version":1}},"canonical_sha256":"0dc505de9f2d4f5c47f5a9fd2559ee9f5561ad24ca8a700c14cd02363fea1d02","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0dc505de9f2d4f5c47f5a9fd2559ee9f5561ad24ca8a700c14cd02363fea1d02","first_computed_at":"2026-08-04T02:12:08.986731Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-04T02:12:08.986731Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9Fe6AYbsfPL8fCeT1mM1a+gtBLBN+gYyjDY7mM2n7gqP8KwkBd+uCKN4+Mw9trcxFU1/hODO0L16uTH1FdwlCQ==","signature_status":"signed_v1","signed_at":"2026-08-04T02:12:08.988250Z","signed_message":"canonical_sha256_bytes"},"source_id":"2608.02403","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7ba105f7ec7d570a93fb81c1a02a024a29d12549c2a2ce3a9d7737075fd36be0","sha256:90d56f1a9d0a001c45104f7049cd557a0e37f5b4a9e951f59095f5b12fddf366"],"state_sha256":"49fd2f8af95bb0ace7432cbd0b96e8029cc796370eaa8a2ca65e62ff0b8cc3a4"}