A quantum mechanical open system as a model of a heat engine

Ronnie Kosloff

doi:10.1063/1.446862

A quantum mechanical open system as a model of a heat engine

Ronnie Kosloff^*

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

240 Scopus citations

Abstract

A quantum model of a heat engine is analyzed. This engine is constructed from two coupled oscillators in interaction with a warm and cold reservoir. Power is extracted by an external periodic driving force. As a function of control parameters a maximum in power is obtained, and a decline of thermodynamic efficiency below the ideal Carnot value. This irreversibility is a consequence of the mechanism devised to extract power in its perturbing the energy level structure of the engine. In the limit of weak coupling to the driving force the efficiency at maximum power obtains the value of η=1-√(T_a/T_b).

Original language	English
Pages (from-to)	1625-1631
Number of pages	7
Journal	The Journal of Chemical Physics
Volume	80
Issue number	4
DOIs	https://doi.org/10.1063/1.446862
State	Published - 1983

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abstract = "A quantum model of a heat engine is analyzed. This engine is constructed from two coupled oscillators in interaction with a warm and cold reservoir. Power is extracted by an external periodic driving force. As a function of control parameters a maximum in power is obtained, and a decline of thermodynamic efficiency below the ideal Carnot value. This irreversibility is a consequence of the mechanism devised to extract power in its perturbing the energy level structure of the engine. In the limit of weak coupling to the driving force the efficiency at maximum power obtains the value of η=1-√(Ta/Tb).",

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AB - A quantum model of a heat engine is analyzed. This engine is constructed from two coupled oscillators in interaction with a warm and cold reservoir. Power is extracted by an external periodic driving force. As a function of control parameters a maximum in power is obtained, and a decline of thermodynamic efficiency below the ideal Carnot value. This irreversibility is a consequence of the mechanism devised to extract power in its perturbing the energy level structure of the engine. In the limit of weak coupling to the driving force the efficiency at maximum power obtains the value of η=1-√(Ta/Tb).

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A quantum mechanical open system as a model of a heat engine

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