中国物理B ›› 2014, Vol. 23 ›› Issue (7): 74501-074501.doi: 10.1088/1674-1056/23/7/074501

所属专题: TOPICAL REVIEW — Statistical Physics and Complex Systems

• TOPICAL REVIEW—Statistical Physics and Complex Systems • 上一篇    下一篇

Effective temperature and fluctuation-dissipation theorem in athermal granular systems:A review

陈琼, 厚美瑛   

  1. Key Laboratory of Soft Matter Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2014-05-06 修回日期:2014-05-29 出版日期:2014-07-15 发布日期:2014-07-15
  • 基金资助:
    Project supported by the Key Program of the National Natural Science Foundation of China (Grant No. 11034010), the National Natural Science Foundation of China (Grant No. 11274354), the Special Fund for Earthquake Research of China (Grant No. 201208011), and the Chinese Academy of Sciences "Strategic Priority Research Program-SJ-10" (Grant No. XDA04020200).

Effective temperature and fluctuation-dissipation theorem in athermal granular systems:A review

Chen Qiong (陈琼), Hou Mei-Ying (厚美瑛)   

  1. Key Laboratory of Soft Matter Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2014-05-06 Revised:2014-05-29 Online:2014-07-15 Published:2014-07-15
  • Contact: Hou Mei-Ying E-mail:mayhou@iphy.ac.cn
  • About author:45.70.-n; 05.40.-a; 05.70.Ln
  • Supported by:
    Project supported by the Key Program of the National Natural Science Foundation of China (Grant No. 11034010), the National Natural Science Foundation of China (Grant No. 11274354), the Special Fund for Earthquake Research of China (Grant No. 201208011), and the Chinese Academy of Sciences "Strategic Priority Research Program-SJ-10" (Grant No. XDA04020200).

摘要: The definition and the previous measurements of a dynamics-relevant temperature-like quantity in granular media are reviewed for slow and fast particle systems. Especially, the validity of the fluctuation-dissipation theorem in such an athermal system is explored. Experimental evidences for the fluctuation-dissipation theorem relevant effect temperature support the athermal statistical mechanics, which has been widely explored in recent years by physicists. Difficulties encountered in defining temperature or establishing thermodynamics or statistical mechanics in non-equilibrium situations are discussed.

关键词: granular systems, fluctuation-dissipation relation, non-equilibrium thermodynamics

Abstract: The definition and the previous measurements of a dynamics-relevant temperature-like quantity in granular media are reviewed for slow and fast particle systems. Especially, the validity of the fluctuation-dissipation theorem in such an athermal system is explored. Experimental evidences for the fluctuation-dissipation theorem relevant effect temperature support the athermal statistical mechanics, which has been widely explored in recent years by physicists. Difficulties encountered in defining temperature or establishing thermodynamics or statistical mechanics in non-equilibrium situations are discussed.

Key words: granular systems, fluctuation-dissipation relation, non-equilibrium thermodynamics

中图分类号:  (Granular systems)

  • 45.70.-n
05.40.-a (Fluctuation phenomena, random processes, noise, and Brownian motion) 05.70.Ln (Nonequilibrium and irreversible thermodynamics)