论文标题
在远程相互作用的影响下量子热发动机的性能
Performance of quantum heat engines under the influence of long-range interactions
论文作者
论文摘要
我们检查了一个量子热发动机，其相互作用的多体工作介质由远程Kitaev链组成，以探索远程相互作用在量子发动机性能中的作用。通过分析研究两种类型的热力学循环，即Otto循环和Stirling循环，我们证明，与短期对应物相比，远程相互作用可以通过远程相互作用来提高远距离相互作用的热发动机的工作输出和效率。我们进一步表明，在OTTO循环中，存在最佳条件，该条件可以通过远程相互作用来同时实现最大的工作输出和效率。但是，对于斯特林周期，赋予工作输出最大增强的状况并不会导致效率最大的提高。我们还研究了如何通过远程相互作用而增强发动机性能的参数状态，并随着相互作用范围的减少而发展。
We examine a quantum heat engine with an interacting many-body working medium consisting of the long-range Kitaev chain to explore the role of long-range interactions in the performance of the quantum engine. By analytically studying two type of thermodynamic cycles, namely Otto cycle and Stirling cycle, we demonstrate that the work output and efficiency of long-range interacting heat engine can be boosted by long-range interactions, in comparison to the short-range counterpart. We further show that in the Otto cycle, there exist an optimal condition for which the largest enhancement of work output and efficiency can be achieved simultaneously by the long-range interactions. But, for the Stirling cycle, the condition that gives the largest enhancement in work output does not lead to the largest enhancement in efficiency. We also investigate how the parameter regimes under which the engine performance is enhanced by the long-range interactions is evolved with decrease in the range of interaction.
