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题名: Fluctuations in partitioning systems with few degrees of freedom
作者: Cerino, L;  Gradenigo, G;  Sarracino, A;  Villamaina, D;  Vulpiani, A
刊名: PHYSICAL REVIEW E
出版日期: 2014
卷号: 89, 期号:4, 页码:42105
关键词: THERMAL-EQUILIBRIUM ;  ADIABATIC PISTON ;  MOTION
学科分类: Physics
DOI: 10.1103/PhysRevE.89.042105
通讯作者: Cerino, L (reprint author), Univ Roma La Sapienza, Dipartimento Fis, Piazzale A Moro 2, I-00185 Rome, Italy.
部门归属: [Cerino, L.] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy
英文摘要: We study the behavior of a moving wall in contact with a particle gas and subjected to an external force. We compare the fluctuations of the system observed in the microcanonical and canonical ensembles, by varying the number of particles. Static and dynamic correlations signal significant differences between the two ensembles. Furthermore, velocity-velocity correlations of the moving wall present a complex two-time relaxation that cannot be reproduced by a standard Langevin-like description. Quite remarkably, increasing the number of gas particles in an elongated geometry, we find a typical time scale, related to the interaction between the partitioning wall and the particles, which grows macroscopically.
资助者: Granular Chaos project; Italian MIUR [RIBD08Z9JE]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000333707300005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15795
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Recommended Citation:
Cerino, L,Gradenigo, G,Sarracino, A,et al. Fluctuations in partitioning systems with few degrees of freedom[J]. PHYSICAL REVIEW E,2014,89(4):42105.
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