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Cheng, Ke; Dong, Jia-Qi; Han, Wen-Hui; Liu, Fei3; Huang, Liang1
Infima statistics of entropy production in an underdamped Brownian motor
Source PublicationPHYSICAL REVIEW E
Language英语
KeywordFLUCTUATION THEOREM
AbstractThe 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.
2020
ISSN2470-0045
Volume102Issue:6Pages:62127
Cooperation Status国内
Subject AreaPhysics
MOST Discipline CataloguePhysics, Fluids & Plasmas ; Physics, Mathematical
DOI10.1103/PhysRevE.102.062127
Indexed BySCIE
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/27365
CollectionSCI期刊论文
Affiliation1.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
Recommended Citation
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.
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