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Wang, JH; Ye, ZL; Lai, YM; Li, WS; He, JH; Wang, JH (reprint author), Nanchang Univ, Dept Phys, Nanchang 330031, Peoples R China.
Efficiency at maximum power of a quantum heat engine based on two coupled oscillators
发表期刊PHYSICAL REVIEW E
语种英语
摘要We propose and theoretically investigate a system of two coupled harmonic oscillators as a heat engine. We show how these two coupled oscillators within undamped regime can be controlled to realize an Otto cycle that consists of two adiabatic and two isochoric processes. During the two isochores the harmonic system is embedded in two heat reservoirs at constant temperatures T-h and T-c (< T-h), respectively, and it is tuned slowly along a protocol to realize an adiabatic process. To illustrate the performance in finite time of the quantum heat engine, we adopt the semigroup approach to model the thermal relaxation dynamics along the two isochoric processes, and we find the upper bound of efficiency at maximum power (EMP) eta* to be a function of the Carnot efficiency eta(C) (= 1 - T-c/T-h): eta* <= eta(+) equivalent to eta(2)(C) /[eta(C) - (1 - eta(C)) ln(1 - eta(C))], identical to those previously derived from ideal (noninteracting) microscopic, mesoscopic, and macroscopic systems.
2015
卷号91期号:6页码:62134
学科领域Physics
DOIhttp://dx.doi.org/10.1103/PhysRevE.91.062134
收录类别SCI
项目资助者National Natural Science Foundation of China [11265010, 11375045, 11365015] ; National Natural Science Foundation of China [11265010, 11375045, 11365015] ; National Natural Science Foundation of China [11265010, 11375045, 11365015] ; National Natural Science Foundation of China [11265010, 11375045, 11365015] ; Jiangxi Provincial Natural Science Foundation, China [20132BAB212009] ; Jiangxi Provincial Natural Science Foundation, China [20132BAB212009] ; Jiangxi Provincial Natural Science Foundation, China [20132BAB212009] ; Jiangxi Provincial Natural Science Foundation, China [20132BAB212009]
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/20953
专题理论物理所科研产出_SCI论文
通讯作者Wang, JH (reprint author), Nanchang Univ, Dept Phys, Nanchang 330031, Peoples R China.
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Wang, JH,Ye, ZL,Lai, YM,et al. Efficiency at maximum power of a quantum heat engine based on two coupled oscillators[J]. PHYSICAL REVIEW E,2015,91(6):62134.
APA Wang, JH,Ye, ZL,Lai, YM,Li, WS,He, JH,&Wang, JH .(2015).Efficiency at maximum power of a quantum heat engine based on two coupled oscillators.PHYSICAL REVIEW E,91(6),62134.
MLA Wang, JH,et al."Efficiency at maximum power of a quantum heat engine based on two coupled oscillators".PHYSICAL REVIEW E 91.6(2015):62134.
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