{"paper":{"title":"Quantum heat-up operation and violation of the second law of thermodynamics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"cond-mat.stat-mech","authors_text":"(2) Mie University, 3, (3) ISMANS, 4) ((1) Isfahan University of Technology, (4) Inspire Institute Inc., France, Iran, Japan, Mozhgan Sabzehzari (1), Sumiyoshi Abe (2, USA), Yuki Aoyaghi (2)","submitted_at":"2009-10-27T18:10:55Z","abstract_excerpt":"Toward the formulation of the operational approach to quantum thermodynamics, the heat-up operator is explicitly constructed. This quantum operation generates for a generic system an irreversible transformation from a pure ground state at zero temperature to a state at finite temperature. The fixed point analysis shows that repeated applications of the operation map from an arbitrary state to the completely random state realized in the high-temperature limit. The change of the von Neumann entropy is evaluated for a simple bipartite spin-1/2 system. It is shown that remarkably, the second law o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.5196","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"}