Infima statistics of entropy production in an underdamped Brownian motor

doi:10.1103/PhysRevE.102.062127

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	Infima statistics of entropy production in an underdamped Brownian motor
	Cheng, Ke ; Dong, Jia-Qi ; Han, Wen-Hui ; Liu, Fei 3; Huang, Liang 1
刊名	PHYSICAL REVIEW E
	2020
卷号	102 期号:6 页码:62127
关键词	FLUCTUATION THEOREM
ISSN号	2470-0045
DOI	10.1103/PhysRevE.102.062127
英文摘要	The second law of thermodynamics states that the entropy never decreases for isolated macroscopical systems, which defines the arrow of time. For small systems, although the entropy increases on average, due to strong fluctuation, it may encounter a temporary decrease. The probability of negative entropy production follows the fluctuation theorem. Recently, it has been demonstrated theoretically the infima law that there exists a lower bound for the average values of the minima of the negative entropy production, which is -k(B). In this paper, we have constructed a horizontal Brownian motor immersed in a granular gas, whose dynamics is governed by the underdamped stochastic process. By recording the angular motion of the motor and measuring the key parameters of the system, we experimentally demonstrate that, despite the nonideal elements in the experiments and that the complex underlying dynamics, the average value of the minima of the negative entropy production is still bounded by -k(B), which may invoke further theoretical investigations of the applicability of the infima law in nonideal realistic small systems.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27365]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Gansu, Peoples R China 2.Lanzhou Univ, Key Lab Magnetism & Magnet Mat MOE, Lanzhou 730000, Gansu, Peoples R China 3.Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China 4.Beihang Univ, Sch Phys, Beijing 100191, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Ke,Dong, Jia-Qi,Han, Wen-Hui,et al. Infima statistics of entropy production in an underdamped Brownian motor[J]. PHYSICAL REVIEW E,2020,102(6):62127.
APA	Cheng, Ke,Dong, Jia-Qi,Han, Wen-Hui,Liu, Fei,&Huang, Liang.(2020).Infima statistics of entropy production in an underdamped Brownian motor.PHYSICAL REVIEW E,102(6),62127.
MLA	Cheng, Ke,et al."Infima statistics of entropy production in an underdamped Brownian motor".PHYSICAL REVIEW E 102.6(2020):62127.