{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:D5YU73SXHOJ663TTSUUOAKEVZZ","short_pith_number":"pith:D5YU73SX","canonical_record":{"source":{"id":"2411.16461","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2024-11-25T15:06:52Z","cross_cats_sorted":[],"title_canon_sha256":"16258ae68304c69c07cb5b1c562da0bea8802da5127837d8c4ffffe86dda0a15","abstract_canon_sha256":"6d2c19e7113480393b46ab8ef958d08468edbaf8df8d6cb3606d54c97f5c9875"},"schema_version":"1.0"},"canonical_sha256":"1f714fee573b93ef6e739528e02895ce72e782f01f42c4c9c9513f4ca516186f","source":{"kind":"arxiv","id":"2411.16461","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2411.16461","created_at":"2026-07-05T10:49:11Z"},{"alias_kind":"arxiv_version","alias_value":"2411.16461v2","created_at":"2026-07-05T10:49:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2411.16461","created_at":"2026-07-05T10:49:11Z"},{"alias_kind":"pith_short_12","alias_value":"D5YU73SXHOJ6","created_at":"2026-07-05T10:49:11Z"},{"alias_kind":"pith_short_16","alias_value":"D5YU73SXHOJ663TT","created_at":"2026-07-05T10:49:11Z"},{"alias_kind":"pith_short_8","alias_value":"D5YU73SX","created_at":"2026-07-05T10:49:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:D5YU73SXHOJ663TTSUUOAKEVZZ","target":"record","payload":{"canonical_record":{"source":{"id":"2411.16461","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2024-11-25T15:06:52Z","cross_cats_sorted":[],"title_canon_sha256":"16258ae68304c69c07cb5b1c562da0bea8802da5127837d8c4ffffe86dda0a15","abstract_canon_sha256":"6d2c19e7113480393b46ab8ef958d08468edbaf8df8d6cb3606d54c97f5c9875"},"schema_version":"1.0"},"canonical_sha256":"1f714fee573b93ef6e739528e02895ce72e782f01f42c4c9c9513f4ca516186f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:49:11.336493Z","signature_b64":"YYK0dZ9HbRsN4AvkhWdoA1fwfo60nx8G2vRHajEs1oG8Ip9rP1DxBs0DqEtcrjaVt/HrrZfxVPMzUHpJBMzhCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1f714fee573b93ef6e739528e02895ce72e782f01f42c4c9c9513f4ca516186f","last_reissued_at":"2026-07-05T10:49:11.335992Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:49:11.335992Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2411.16461","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":"2026-07-05T10:49:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gktvD1jSvfFksIL97XfGOAZxSGplEppgRyVFvtm9vHP5vqlEMzRNsgDPVPJw8DsHKCZ37tSJ6jIqtjYegvIvAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T11:04:58.805203Z"},"content_sha256":"2aad7a329ef9c02e51e9ad0027b6ba621de9bc6b0ae8a6b442684a552a051823","schema_version":"1.0","event_id":"sha256:2aad7a329ef9c02e51e9ad0027b6ba621de9bc6b0ae8a6b442684a552a051823"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:D5YU73SXHOJ663TTSUUOAKEVZZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Nonequivalence between absolute separability and positive partial transposition in the symmetric subspace","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Eduardo Serrano-Ens\\'astiga, John Martin, Jonathan Louvet, Thierry Bastin","submitted_at":"2024-11-25T15:06:52Z","abstract_excerpt":"The equivalence between absolutely separable states and absolutely positive partial transposed (PPT) states in general remains an open problem in quantum entanglement theory. In this work, we study an analogous question for symmetric multiqubit states. We show that symmetric absolutely PPT (SAPPT) states (symmetric states that remain PPT after any symmetry-preserving unitary evolution) are not always symmetric absolutely separable by providing explicit counterexamples. More precisely, we construct a family of entangled five-qubit SAPPT states. Similar counterexamples for larger odd numbers of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2411.16461","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/2411.16461/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":"2026-07-05T10:49:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N4P2ssRUZxlhBAhsZtlKxHKNRQ5gJP0dhWyYx1tn1PsYjwte2swSzftFXXry2RRwbkMQeSqleQWGcCqAdUvFBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T11:04:58.805632Z"},"content_sha256":"b50a9bccd108d8d88dd98619e22d790230fd3452ca19fb6fd354a68cf8439592","schema_version":"1.0","event_id":"sha256:b50a9bccd108d8d88dd98619e22d790230fd3452ca19fb6fd354a68cf8439592"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/D5YU73SXHOJ663TTSUUOAKEVZZ/bundle.json","state_url":"https://pith.science/pith/D5YU73SXHOJ663TTSUUOAKEVZZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/D5YU73SXHOJ663TTSUUOAKEVZZ/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":"2026-08-13T11:04:58Z","links":{"resolver":"https://pith.science/pith/D5YU73SXHOJ663TTSUUOAKEVZZ","bundle":"https://pith.science/pith/D5YU73SXHOJ663TTSUUOAKEVZZ/bundle.json","state":"https://pith.science/pith/D5YU73SXHOJ663TTSUUOAKEVZZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/D5YU73SXHOJ663TTSUUOAKEVZZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:D5YU73SXHOJ663TTSUUOAKEVZZ","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":"6d2c19e7113480393b46ab8ef958d08468edbaf8df8d6cb3606d54c97f5c9875","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2024-11-25T15:06:52Z","title_canon_sha256":"16258ae68304c69c07cb5b1c562da0bea8802da5127837d8c4ffffe86dda0a15"},"schema_version":"1.0","source":{"id":"2411.16461","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2411.16461","created_at":"2026-07-05T10:49:11Z"},{"alias_kind":"arxiv_version","alias_value":"2411.16461v2","created_at":"2026-07-05T10:49:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2411.16461","created_at":"2026-07-05T10:49:11Z"},{"alias_kind":"pith_short_12","alias_value":"D5YU73SXHOJ6","created_at":"2026-07-05T10:49:11Z"},{"alias_kind":"pith_short_16","alias_value":"D5YU73SXHOJ663TT","created_at":"2026-07-05T10:49:11Z"},{"alias_kind":"pith_short_8","alias_value":"D5YU73SX","created_at":"2026-07-05T10:49:11Z"}],"graph_snapshots":[{"event_id":"sha256:b50a9bccd108d8d88dd98619e22d790230fd3452ca19fb6fd354a68cf8439592","target":"graph","created_at":"2026-07-05T10:49:11Z","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/2411.16461/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The equivalence between absolutely separable states and absolutely positive partial transposed (PPT) states in general remains an open problem in quantum entanglement theory. In this work, we study an analogous question for symmetric multiqubit states. We show that symmetric absolutely PPT (SAPPT) states (symmetric states that remain PPT after any symmetry-preserving unitary evolution) are not always symmetric absolutely separable by providing explicit counterexamples. More precisely, we construct a family of entangled five-qubit SAPPT states. Similar counterexamples for larger odd numbers of ","authors_text":"Eduardo Serrano-Ens\\'astiga, John Martin, Jonathan Louvet, Thierry Bastin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2024-11-25T15:06:52Z","title":"Nonequivalence between absolute separability and positive partial transposition in the symmetric subspace"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2411.16461","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":"sha256:2aad7a329ef9c02e51e9ad0027b6ba621de9bc6b0ae8a6b442684a552a051823","target":"record","created_at":"2026-07-05T10:49:11Z","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":"6d2c19e7113480393b46ab8ef958d08468edbaf8df8d6cb3606d54c97f5c9875","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2024-11-25T15:06:52Z","title_canon_sha256":"16258ae68304c69c07cb5b1c562da0bea8802da5127837d8c4ffffe86dda0a15"},"schema_version":"1.0","source":{"id":"2411.16461","kind":"arxiv","version":2}},"canonical_sha256":"1f714fee573b93ef6e739528e02895ce72e782f01f42c4c9c9513f4ca516186f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1f714fee573b93ef6e739528e02895ce72e782f01f42c4c9c9513f4ca516186f","first_computed_at":"2026-07-05T10:49:11.335992Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:49:11.335992Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YYK0dZ9HbRsN4AvkhWdoA1fwfo60nx8G2vRHajEs1oG8Ip9rP1DxBs0DqEtcrjaVt/HrrZfxVPMzUHpJBMzhCg==","signature_status":"signed_v1","signed_at":"2026-07-05T10:49:11.336493Z","signed_message":"canonical_sha256_bytes"},"source_id":"2411.16461","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2aad7a329ef9c02e51e9ad0027b6ba621de9bc6b0ae8a6b442684a552a051823","sha256:b50a9bccd108d8d88dd98619e22d790230fd3452ca19fb6fd354a68cf8439592"],"state_sha256":"f604059c291aa713e05bc905aa401f82222462ab310c3e4d02eb82721558c909"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S9kGKNfip8SHoAu/a3gg1ERl22UmhgE3opOhmi6GmpM1GTb615UHcFqL7CmiiPrnMYZTQqBZvpT61lBGOed9Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-13T11:04:58.808065Z","bundle_sha256":"dd3d40082f048ad7731b534a70feab04ffa497b14167a9137642940e6b28f273"}}