A hard disc analysis of momentum deficit due to dissipation
A hard disc analysis of momentum deficit due to dissipation
复制标题
由于耗散导致的动量不足的硬盘分析
DOI:
10.1088/0031-8949/86/05/058508
复制
发表时间:
2012
期刊:
影响因子:
2.9
通讯作者:
K. Sekimoto
中科院分区:
文献类型:
--
作者:
R. Kawai;A. Fruleux;K. Sekimoto
When a Brownian object is in a non-equilibrium steady state, the actual force exerted on it is different from the one in thermal equilibrium. In our previous paper (Fruleux et al 2012 Phys. Rev. Lett. 108 160601), we discovered a general principle that relates the missing force to dissipation rates through the concept of momentum deficiency due to dissipation (MDD). In this paper, we examine the principle using various models based on hard disc gases and Brownian pistons. Explicit expressions of the forces are obtained analytically and the results are compared with molecular dynamics simulations. The good agreement demonstrates the validity of MDD.