{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:LY7OBCJBXLRGGMVWS3WPAYDYBZ","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":"a4c9253b0a54509acfd296d017de8cbd5a733075b2fbddc26a033e8867ce0096","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-12-07T11:34:24Z","title_canon_sha256":"40c9a7e827f64421a411d93786de2a30c28d172f98f9252c648dccfad43f0146"},"schema_version":"1.0","source":{"id":"1512.01989","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.01989","created_at":"2026-05-18T01:16:09Z"},{"alias_kind":"arxiv_version","alias_value":"1512.01989v2","created_at":"2026-05-18T01:16:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.01989","created_at":"2026-05-18T01:16:09Z"},{"alias_kind":"pith_short_12","alias_value":"LY7OBCJBXLRG","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"LY7OBCJBXLRGGMVW","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"LY7OBCJB","created_at":"2026-05-18T12:29:29Z"}],"graph_snapshots":[{"event_id":"sha256:81c71a196a362aaa9b94473f82fd45846aa6c4ef6eea2ab5301a454808687d3b","target":"graph","created_at":"2026-05-18T01:16:09Z","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":"In this work we propose a measure for the quantum discord of indistinguishable particles, based on the definition of entanglement of particles given in [H. M. Wiseman et al., Phis. Rev. Lett 91, 097902 (2003)]. This discord of particles is then used to evaluate the quantum correlations in a system of two identical bosons (fermions), where the particles perform a quantum random walk described by the Hubbard hamiltonian in a 1D lattice. The dynamics of the particles is either unperturbed or subject to a classical environmental noise - such as random telegraph, pink or brown noise. The observed r","authors_text":"Andrea Beggi, Fabrizio Buscemi, Paolo Bordone","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-12-07T11:34:24Z","title":"Quantum correlations of identical particles subject to classical environmental noise"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.01989","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":"sha256:8eba2c88494790a3940990a60013d07f5f5c063f59555cd9c0c212e77ba63c4b","target":"record","created_at":"2026-05-18T01:16:09Z","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":"a4c9253b0a54509acfd296d017de8cbd5a733075b2fbddc26a033e8867ce0096","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-12-07T11:34:24Z","title_canon_sha256":"40c9a7e827f64421a411d93786de2a30c28d172f98f9252c648dccfad43f0146"},"schema_version":"1.0","source":{"id":"1512.01989","kind":"arxiv","version":2}},"canonical_sha256":"5e3ee08921bae26332b696ecf060780e6fdf2e321acdd26499fb3584da7726d7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5e3ee08921bae26332b696ecf060780e6fdf2e321acdd26499fb3584da7726d7","first_computed_at":"2026-05-18T01:16:09.444398Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:16:09.444398Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YHOmF3KrnrqfIfR8hDOvVAjZIqhp4pj96O4hSbzdFOZWEGpUGu5dZaOrIY/hoPHVpvNeiU69VV0Tovw/kgyoDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:16:09.445013Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.01989","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8eba2c88494790a3940990a60013d07f5f5c063f59555cd9c0c212e77ba63c4b","sha256:81c71a196a362aaa9b94473f82fd45846aa6c4ef6eea2ab5301a454808687d3b"],"state_sha256":"9493a86eda605db7ae31515aaa37727363a50cc3bf2bfb0a4ba8550f9ff6ec57"}