The Second Law of Thermodynamics in a Quantum Heat Engine Model |
| |
| Authors: | ZHANG Ting CAI Li-Feng CHEN Ping-Xing LI Cheng-Zu |
| |
| Institution: | 1. Department of Applied Physics, National University of
Defence Technology, Changsha 410073, China
;2. Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China |
| |
| Abstract: | The second law of thermodynamics has been proven by many facts in classical
world. Is there any new property of it in quantum world? In this paper, we
calculate the change of entropy in T.D. Kieu's model for quantum heat engine
(QHE) and prove the broad validity of the second law of thermodynamics. It
is shown that the entropy of the quantum heat engine neither decreases in a whole cycle, nor decreases in either stage of the cycle. The second law of thermodynamics still holds in this QHE model. Moreover, although the
modified quantum heat engine is capable of extracting more work, its
efficiency does not improve at all. It is neither beyond the efficiency
of T.D. Kieu's initial model, nor greater than the reversible Carnot efficiency. |
| |
| Keywords: | second law of thermodynamics entropy quantum heat engine |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《理论物理通讯》浏览原始摘要信息 |
| 点击此处可从《理论物理通讯》下载免费的PDF全文 |
|
