2009/10/27 by Mozhgan Sabzehzari, Sabzehzari, Mozhgan, Yuki Aoyaghi +3
Physics and Astronomy · #FOS: Physical sciences #Quantum Physics (quant-ph) #Statistical Mechanics (cond-mat.stat-mech) #cond-mat.stat-mech #quant-ph
paper · pdf · doi:10.48550/arxiv.0910.5196
Withdrawn due to some points remaining to be clarified
arxiv created 2010/10/06 · arxiv updated 2010/10/07
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 of thermodynamics may be violated along processes generated by the present quantum operation.