arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1003.3728cond-mat.stat-mech
收藏

非线性扩散介质中的布朗泵

Brownian pump in nonlinear diffusive media

Bao-quan Ai, Liang-gang Liu

摘要:

研究了非线性扩散介质中受无偏外力作用的布朗泵。该泵系统被嵌入在一个有限的区域,并有两个粒子水库。在绝热极限下,我们得到了正常扩散、亚扩散和超扩散下电流和抽运容量随温度变化的解析表达式。结果发现,重要的异常检测到正常的扩散情况相比。与正常状态相比,超扩散状态在低温下表现出相反的电流。在亚扩散区,电流可能在低温下变为禁能,在高温下变为负值。

英文摘要:

A Brownian pump in nonlinear diffusive media is investigated in the presence of an unbiased external force. The pumping system is embedded in a finite region and bounded by two particle reservoirs. In the adiabatic limit, we obtain the analytical expressions of the current and the pumping capacity as a function of temperature for normal diffusion, subdiffusion and superdiffusion. It is found that important anomalies are detected in comparison to the normal diffusion case. The superdiffusive regime, compared with the normal one, exhibits an opposite current for low temperatures. In subdiffusive regime, the current may become forbidden for low temperatures and negative for high temperatures.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑