Effects of dark energy on the efficiency of charged AdS black holes as heat engines
文献类型：期刊论文
| 作者 | Liu, H (reprint author), Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China.; Liu, H; Meng, XH |
| 刊名 | EUROPEAN PHYSICAL JOURNAL C
 |
| 出版日期 | 2017 |
| 卷号 | 77期号:8页码:556 |
| DOI | http://dx.doi.org/10.1140/epjc/s10052-017-5134-9 |
| 英文摘要 | In this paper, we study the heat engine where a charged AdS black hole surrounded by dark energy is the working substance and the mechanical work is done via the PdV term in the first law of black hole thermodynamics in the extended phase space. We first investigate the effects of a kind of dark energy (quintessence field in this paper) on the efficiency of the RN-AdS black holes as the heat engine defined as a rectangular closed path in the P-V plane. We get the exact efficiency formula and find that the quintessence field can improve the heat engine efficiency, which will increase as the field density pq grows. At some fixed parameters, we find that a larger volume difference between the smaller black holes(V-1) and the bigger black holes(V-2) will lead to a lower efficiency, while the bigger pressure difference P-1 - P-4 will make the efficiency higher, but it is always smaller than 1 and will never be beyond the Carnot efficiency, which is the maximum value of the efficiency constrained by thermodynamics laws; this is consistent to the heat engine in traditional thermodynamics. After making some special choices for the thermodynamical quantities, we find that the increase of the electric charge Q and the normalization factor a can also promote the heat engine efficiency, which would infinitely approach the Carnot limit when Q or a goes to infinity. |
| 学科主题 | Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/21989]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Liu, H (reprint author), Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Liu, H ,Liu, H,Meng, XH. Effects of dark energy on the efficiency of charged AdS black holes as heat engines[J]. EUROPEAN PHYSICAL JOURNAL C,2017,77(8):556. |
| APA | Liu, H ,Liu, H,&Meng, XH.(2017).Effects of dark energy on the efficiency of charged AdS black holes as heat engines.EUROPEAN PHYSICAL JOURNAL C,77(8),556. |
| MLA | Liu, H ,et al."Effects of dark energy on the efficiency of charged AdS black holes as heat engines".EUROPEAN PHYSICAL JOURNAL C 77.8(2017):556. |
入库方式： OAI收割
来源：理论物理研究所
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