{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:SJYR74JICXG2WENVEAQZVECVBE","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":"7e1f172e36258059c3ac3b00bcdc6b22b3c6b64838a3f4ca2b9fcb98b545f35d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-10-06T06:19:12Z","title_canon_sha256":"6749d5f57d29a7c00da1770c9fd8e30fe03376d5ba8ef959232cf695e5b82e39"},"schema_version":"1.0","source":{"id":"1410.0955","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1410.0955","created_at":"2026-05-18T01:41:52Z"},{"alias_kind":"arxiv_version","alias_value":"1410.0955v1","created_at":"2026-05-18T01:41:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1410.0955","created_at":"2026-05-18T01:41:52Z"},{"alias_kind":"pith_short_12","alias_value":"SJYR74JICXG2","created_at":"2026-05-18T12:28:49Z"},{"alias_kind":"pith_short_16","alias_value":"SJYR74JICXG2WENV","created_at":"2026-05-18T12:28:49Z"},{"alias_kind":"pith_short_8","alias_value":"SJYR74JI","created_at":"2026-05-18T12:28:49Z"}],"graph_snapshots":[{"event_id":"sha256:a4bcfa3ba00b05aeee4657cdf612b72f300309a4ffeb1cfd2f584c1e7f0ab1b0","target":"graph","created_at":"2026-05-18T01:41:52Z","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":"A sufficient condition for a quantum state of a system of spin-1/2 particles (spin-1/2s) to admit a local hidden variable (LHV) description i.e. to be classical is the separability of the density matrix characterizing its state, but not all classical states are separable. This leads one to infer that separability and classicality are two different concepts. These concepts are examined here in the framework of a criterion for identifying classicality of a system of spin-1/2s based on the concept of joint quasiprobability (JQP) for the eigevalues of spin components. The said criterion identifies","authors_text":"R.R. Puri","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-10-06T06:19:12Z","title":"Quasiprobability Based Criterion for Classicality and Separability of States of Spin-1/2 Particles"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1410.0955","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:dd940523d894862caea8f5dd9aef1f15105db1ec1e4358618ecb13586194c1fc","target":"record","created_at":"2026-05-18T01:41:52Z","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":"7e1f172e36258059c3ac3b00bcdc6b22b3c6b64838a3f4ca2b9fcb98b545f35d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-10-06T06:19:12Z","title_canon_sha256":"6749d5f57d29a7c00da1770c9fd8e30fe03376d5ba8ef959232cf695e5b82e39"},"schema_version":"1.0","source":{"id":"1410.0955","kind":"arxiv","version":1}},"canonical_sha256":"92711ff12815cdab11b520219a9055092000c76cf04c096a8f067145e2e1b259","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"92711ff12815cdab11b520219a9055092000c76cf04c096a8f067145e2e1b259","first_computed_at":"2026-05-18T01:41:52.724862Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:41:52.724862Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"v6W9DjG3zny4oEpdwEzq14K4pKAQqIosUYWnoke2UbUO+21856P2G9o6C8N0ouKTyTa7MsVFiOZnEOEL74AaDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:41:52.725420Z","signed_message":"canonical_sha256_bytes"},"source_id":"1410.0955","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dd940523d894862caea8f5dd9aef1f15105db1ec1e4358618ecb13586194c1fc","sha256:a4bcfa3ba00b05aeee4657cdf612b72f300309a4ffeb1cfd2f584c1e7f0ab1b0"],"state_sha256":"bffdf38e8ec933c0d7334f94e3a79bb5de83ed191846fa7d46eda43da349aa39"}