Quantum heat engines and nonequilibrium temperature

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Johal, Ramandeep S.
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Abstract
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A pair of two-level systems initially prepared in different thermal states and coupled to an external reversible work source, do not in general reach a common temperature at the end of a unitary work extraction process. We define an effective temperature for the final nonequilibrium but passive state of the bipartite quantum system and analyse its properties.
Comment: Five pages, Accepted for publication in Physical Review E
Keywords
Quantum Physics, Condensed Matter - Statistical Mechanics
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