论文标题
Ising关键量子奥托引擎
The Ising critical quantum Otto engine
论文作者
论文摘要
我们研究了一个四冲程的奥托发动机，其工作流体是量子链。热力学循环包括在热隔离中发生的横向磁场的扫描，在不同温度下的储层与储层相互交替。系统 - 环境耦合以热力学一致的方式通过非局部lindblad主方程进行建模。我们表明，该发动机可能以四种不同的操作模式运行，具体取决于各种参数，特别是它可以充当加热引擎和冰箱。随着临界点的交叉，我们检测到热力学性能的增强，并详细研究。
We study a four-stroke Otto engine whose working fluid is a quantum Ising chain. The thermodynamic cycle consists in sweeps of the transverse magnetic field occurring in thermal isolation, alternated by thermalisation strokes with reservoirs at different temperatures. The system-environment coupling is modelled in a thermodynamically consistent way by means of a nonlocal Lindblad master equation. We show that the engine may operate in four different operation modes, depending on the various parameters, in particular it can act as a heat engine and as a refrigerator. We detect an enhancement of the thermodynamic performance as the critical point is crossed, and investigate it in detail.
