{"paper":{"title":"Reexamination of strong subadditivity: A quantum-correlation approach","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Mohsen Sarbishaei, Razieh Taghiabadi, Seyed Javad Akhtarshenas","submitted_at":"2016-11-22T18:44:10Z","abstract_excerpt":"The strong subadditivity inequality of von Neumann entropy relates the entropy of subsystems of a tripartite state $\\rho_{ABC}$ to that of the composite system. Here, we define $\\boldsymbol{T}^{(a)}(\\rho_{ABC})$ as the extent to which $\\rho_{ABC}$ fails to satisfy the strong subadditivity inequality $S(\\rho_{B})+S(\\rho_{C}) \\le S(\\rho_{AB})+S(\\rho_{AC})$ with equality and investigate its properties. In particular, by introducing auxiliary subsystem $E$, we consider any purification $|\\psi_{ABCE}\\rangle$ of $\\rho_{ABC}$ and formulate $\\boldsymbol{T}^{(a)}(\\rho_{ABC})$ as the extent to which the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.07455","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":""},"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"}