{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:JE3OKOYK2KRCLSCT3F4GNVZ7U7","short_pith_number":"pith:JE3OKOYK","canonical_record":{"source":{"id":"1410.8752","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-10-31T14:34:20Z","cross_cats_sorted":["hep-ph","hep-th"],"title_canon_sha256":"b9bf0ce1c89e67e0fd1933c3e4305e54aaf3e2cfcc56c6315db2cc1f38c26170","abstract_canon_sha256":"3c50d998596bd409572d1ef96ef4ca3b744298b0cf66d09fd5d42719f6a7e463"},"schema_version":"1.0"},"canonical_sha256":"4936e53b0ad2a225c853d97866d73fa7e19809f6bdb7f332b61bb1d6f578644e","source":{"kind":"arxiv","id":"1410.8752","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1410.8752","created_at":"2026-05-18T01:30:35Z"},{"alias_kind":"arxiv_version","alias_value":"1410.8752v1","created_at":"2026-05-18T01:30:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1410.8752","created_at":"2026-05-18T01:30:35Z"},{"alias_kind":"pith_short_12","alias_value":"JE3OKOYK2KRC","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_16","alias_value":"JE3OKOYK2KRCLSCT","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_8","alias_value":"JE3OKOYK","created_at":"2026-05-18T12:28:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:JE3OKOYK2KRCLSCT3F4GNVZ7U7","target":"record","payload":{"canonical_record":{"source":{"id":"1410.8752","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-10-31T14:34:20Z","cross_cats_sorted":["hep-ph","hep-th"],"title_canon_sha256":"b9bf0ce1c89e67e0fd1933c3e4305e54aaf3e2cfcc56c6315db2cc1f38c26170","abstract_canon_sha256":"3c50d998596bd409572d1ef96ef4ca3b744298b0cf66d09fd5d42719f6a7e463"},"schema_version":"1.0"},"canonical_sha256":"4936e53b0ad2a225c853d97866d73fa7e19809f6bdb7f332b61bb1d6f578644e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:30:35.151395Z","signature_b64":"FIQxx/0yx8HO+Wk86N1BjvVi7qDSBjw+dyyjPphRg7RPe6Qa6hcvs4xIpMeVAorAzhpLygDbL6ohTba2m7mkAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4936e53b0ad2a225c853d97866d73fa7e19809f6bdb7f332b61bb1d6f578644e","last_reissued_at":"2026-05-18T01:30:35.150676Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:30:35.150676Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1410.8752","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:30:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zJHAXFJgffMGuvCPSdD42EKvhrHVJps7IQkeDVWeByB97PlBnfqAzJf78WkM5VWaIH6z9GKh/pfz9+glOg97Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T21:48:55.229129Z"},"content_sha256":"d27955f04d77305ac2737618eea041e2b7e7cad4ff2330da84675f5327b7ba89","schema_version":"1.0","event_id":"sha256:d27955f04d77305ac2737618eea041e2b7e7cad4ff2330da84675f5327b7ba89"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:JE3OKOYK2KRCLSCT3F4GNVZ7U7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Entanglement and separability in the noncommutative phase-space scenario","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph","hep-th"],"primary_cat":"quant-ph","authors_text":"Alex E. Bernardini, Catarina Bastos, Jo\\~ao N. Prata, Nuno C. Dias, Orfeu Bertolami","submitted_at":"2014-10-31T14:34:20Z","abstract_excerpt":"Quantumness and separability criteria for continuous variable systems are discussed for the case of a noncommutative (NC) phase-space. In particular, the quantum nature and the entanglement configuration of NC two-mode Gaussian states are examined. Two families of covariance matrices describing standard quantum mechanics (QM) separable states are deformed into a NC QM configuration and then investigated through the positive partial transpose criterium for identifying quantum entanglement. It is shown that the entanglement of Gaussian states may be exclusively induced by switching on the NC def"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1410.8752","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-18T01:30:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"slNm/3lxtghi6IpBsTXETI/8jWUfnVZQZMUYkUMSmV5upPFwItG2wDmcQl85SMdbfho7QGTCZVuibmfaPvZaCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T21:48:55.229860Z"},"content_sha256":"ed278c8cddda9ebd1acbf852463a30c454e41176fcb45afd3cf3616cb350dba4","schema_version":"1.0","event_id":"sha256:ed278c8cddda9ebd1acbf852463a30c454e41176fcb45afd3cf3616cb350dba4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JE3OKOYK2KRCLSCT3F4GNVZ7U7/bundle.json","state_url":"https://pith.science/pith/JE3OKOYK2KRCLSCT3F4GNVZ7U7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JE3OKOYK2KRCLSCT3F4GNVZ7U7/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":"2026-05-28T21:48:55Z","links":{"resolver":"https://pith.science/pith/JE3OKOYK2KRCLSCT3F4GNVZ7U7","bundle":"https://pith.science/pith/JE3OKOYK2KRCLSCT3F4GNVZ7U7/bundle.json","state":"https://pith.science/pith/JE3OKOYK2KRCLSCT3F4GNVZ7U7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JE3OKOYK2KRCLSCT3F4GNVZ7U7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:JE3OKOYK2KRCLSCT3F4GNVZ7U7","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":"3c50d998596bd409572d1ef96ef4ca3b744298b0cf66d09fd5d42719f6a7e463","cross_cats_sorted":["hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-10-31T14:34:20Z","title_canon_sha256":"b9bf0ce1c89e67e0fd1933c3e4305e54aaf3e2cfcc56c6315db2cc1f38c26170"},"schema_version":"1.0","source":{"id":"1410.8752","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1410.8752","created_at":"2026-05-18T01:30:35Z"},{"alias_kind":"arxiv_version","alias_value":"1410.8752v1","created_at":"2026-05-18T01:30:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1410.8752","created_at":"2026-05-18T01:30:35Z"},{"alias_kind":"pith_short_12","alias_value":"JE3OKOYK2KRC","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_16","alias_value":"JE3OKOYK2KRCLSCT","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_8","alias_value":"JE3OKOYK","created_at":"2026-05-18T12:28:33Z"}],"graph_snapshots":[{"event_id":"sha256:ed278c8cddda9ebd1acbf852463a30c454e41176fcb45afd3cf3616cb350dba4","target":"graph","created_at":"2026-05-18T01:30:35Z","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":"Quantumness and separability criteria for continuous variable systems are discussed for the case of a noncommutative (NC) phase-space. In particular, the quantum nature and the entanglement configuration of NC two-mode Gaussian states are examined. Two families of covariance matrices describing standard quantum mechanics (QM) separable states are deformed into a NC QM configuration and then investigated through the positive partial transpose criterium for identifying quantum entanglement. It is shown that the entanglement of Gaussian states may be exclusively induced by switching on the NC def","authors_text":"Alex E. Bernardini, Catarina Bastos, Jo\\~ao N. Prata, Nuno C. Dias, Orfeu Bertolami","cross_cats":["hep-ph","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-10-31T14:34:20Z","title":"Entanglement and separability in the noncommutative phase-space scenario"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1410.8752","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:d27955f04d77305ac2737618eea041e2b7e7cad4ff2330da84675f5327b7ba89","target":"record","created_at":"2026-05-18T01:30:35Z","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":"3c50d998596bd409572d1ef96ef4ca3b744298b0cf66d09fd5d42719f6a7e463","cross_cats_sorted":["hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-10-31T14:34:20Z","title_canon_sha256":"b9bf0ce1c89e67e0fd1933c3e4305e54aaf3e2cfcc56c6315db2cc1f38c26170"},"schema_version":"1.0","source":{"id":"1410.8752","kind":"arxiv","version":1}},"canonical_sha256":"4936e53b0ad2a225c853d97866d73fa7e19809f6bdb7f332b61bb1d6f578644e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4936e53b0ad2a225c853d97866d73fa7e19809f6bdb7f332b61bb1d6f578644e","first_computed_at":"2026-05-18T01:30:35.150676Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:30:35.150676Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FIQxx/0yx8HO+Wk86N1BjvVi7qDSBjw+dyyjPphRg7RPe6Qa6hcvs4xIpMeVAorAzhpLygDbL6ohTba2m7mkAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:30:35.151395Z","signed_message":"canonical_sha256_bytes"},"source_id":"1410.8752","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d27955f04d77305ac2737618eea041e2b7e7cad4ff2330da84675f5327b7ba89","sha256:ed278c8cddda9ebd1acbf852463a30c454e41176fcb45afd3cf3616cb350dba4"],"state_sha256":"30924a248e1909c2c2d8994f91f6f0321845714550262a32314df22668f1d6b9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jQY4NNW5uZIS9YqmXXL3cy+qY4LjQUMlks6RJY5GljQLvzJpunrG6F5w94GlJlvFgWLpSGJwKh4Yptjh+ZxNDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T21:48:55.233647Z","bundle_sha256":"19d87e494d8665a75df09be01e4f2fba706bbe4e5ef65cb19c75900768240d2c"}}